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Designation: A 480/A 480M – 06a

Standard Speciﬁcation for

General Requirements for Flat-Rolled Stainless and Heat-

Resisting Steel Plate, Sheet, and Strip

This standard is issued under the ﬁxed designation A 480/A 480M; the number immediately following the designation indicates the year

of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.

A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope*

1.1 This speciﬁcation

covers a group of general require-

ments that, unless otherwise speciﬁed in the purchase order or

in an individual speciﬁcation, shall apply to rolled steel plate,

sheet, and strip, under each of the following speciﬁcations

issued by ASTM: Speciﬁcations

A 167, A 176, A 240/A 240M,

A 263, A 264, A 265, A 666, A 693, A 793, and A 895.

1.2 In the case of conﬂict between a requirement of a

product speciﬁcation and a requirement of this speciﬁcation,

the product speciﬁcation shall prevail. In the case of conﬂict

between a requirement of the product speciﬁcation or a

requirement of this speciﬁcation and a more stringent require-

ment of the purchase order, the purchase order shall prevail.

The purchase order requirements shall not take precedence if

they, in any way, violate the requirements of the product

speciﬁcation or this speciﬁcation; for example, by waiving a

test requirement or by making a test requirement less stringent.

1.3 The values stated in either inch-pound units or SI units

are to be regarded separately as standard. Within the text, the

SI units are shown in brackets, except that when A 480M is

speciﬁed,

Annex A3 shall apply for the dimensional tolerances

and not the bracketed SI values in

Annex A2. The values stated

in each system are not exact equivalents; therefore, each

system must be used independently of the other. Combining

values from the two systems may result in nonconformance

with the speciﬁcation.

1.4 This speciﬁcation and the applicable material speciﬁca-

tions are expressed in both inch-pound and SI units. However,

unless the order speciﬁes the applicable “M” speciﬁcation

designation [SI units], the material shall be furnished in

inch-pound units.

2. Referenced Documents

2.1 ASTM Standards:

A 167 Speciﬁcation for Stainless and Heat-Resisting

Chromium-Nickel Steel Plate, Sheet, and Strip

A 176 Speciﬁcation for Stainless and Heat-Resisting Chro-

mium Steel Plate, Sheet, and Strip

A 240/A 240M Speciﬁcation for Chromium and

Chromium-Nickel Stainless Steel Plate, Sheet, and Strip

for Pressure Vessels and for General Applications

A 262 Practices for Detecting Susceptibility to Intergranu-

lar Attack in Austenitic Stainless Steels

A 263 Speciﬁcation for Stainless Chromium Steel-Clad

Plate

A 264 Speciﬁcation for Stainless Chromium-Nickel Steel-

Clad Plate

A 265 Speciﬁcation for Nickel and Nickel-Base Alloy-Clad

Steel Plate

A 342/A 342M Test Methods for Permeability of Feebly

Magnetic Materials

A 370 Test Methods and Deﬁnitions for Mechanical Testing

of Steel Products

A 666 Speciﬁcation for Annealed or Cold-Worked Austen-

itic Stainless Steel Sheet, Strip, Plate, and Flat Bar

A 693 Speciﬁcation for Precipitation-Hardening Stainless

and Heat-Resisting Steel Plate, Sheet, and Strip

A 700 Practices for Packaging, Marking, and Loading

Methods for Steel Products for Shipment

A 751 Test Methods, Practices, and Terminology for

Chemical Analysis of Steel Products

A 763 Practices for Detecting Susceptibility to Intergranu-

lar Attack in Ferritic Stainless Steels

A 793 Speciﬁcation for Rolled Floor Plate, Stainless Steel

A 895 Speciﬁcation for Free-Machining Stainless Steel

Plate, Sheet, and Strip

This speciﬁcation is under the jurisdiction of ASTM Committee A01 on Steel,

Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee

A01.17 on Flat-Rolled and Wrought Stainless Steel.

Current edition approved June 15, 2006. Published June 2006. Originally

approved in 1962. Last previous edition approved in 2006 as A 480/A 480M – 06.

For ASME Boiler and Pressure Vessel Code applications see related Speciﬁ-

cation SA – 480 in Section II of that Code.

For referenced ASTM standards, visit the ASTM website, www.astm.org, or

contact ASTM Customer Service at [email protected]. For Annual Book of ASTM

Standards volume information, refer to the standard’s Document Summary page on

the ASTM website.

*A Summary of Changes section appears at the end of this standard.

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

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A 923 Test Methods for Detecting Detrimental Intermetallic

Phase in Duplex Austenitic/Ferritic Stainless Steels

E 140 Hardness Conversion Tables for Metals Relationship

Among Brinell Hardness, Vickers Hardness, Rockwell

Hardness, Superﬁcial Hardness, Knoop Hardness, and

Scleroscope Hardness

2.2 AIAG Standard:

B-5 Primary Metals Identiﬁcation Tag Application Standard

2.3 ANSI Standard:

Accredited Standards Committee X 12, (ANSI ASC X12)

2.4 Federal Standard:

Fed. Std. No. 123 Marking for Shipment (Civil Agencies)

2.5 Military Standards:

MIL-STD-129 Marking for Shipment and Storage

MIL-STD-163 Steel Mill Products, Preparation for Ship-

ment and Storage

3. Terminology

3.1 Deﬁnitions:

3.1.1 Plate, sheet, strip, and cold work as used in this

speciﬁcation apply to the following:

3.1.2 plate—material

⁄

in. [5.00 mm] and over in thick-

ness and over 10 in. [250 mm] in width. Finishes for plate are

actually shown in Section

13.

3.1.3 sheet—material under

⁄

in. [5.00 mm] in thickness

and 24 in. [600 mm] and over in width. Finishes for sheet are

actually shown in Section

11.

3.1.4 strip—cold-rolled material under

⁄

in. [5.00 mm] in

thickness and under 24 in. [600 mm] in width. Finishes are

detailed in Section

12 for strip, and strip edges in Section 14

for Cold-Rolled Strip.

3.1.5 cold work—the changing of mechanical properties by

work hardening.

4. Ordering Information

4.1 It is the responsibility of the purchaser to specify all

requirements that are necessary for material ordered under this

speciﬁcation. Such requirements may include, but are not

limited to, the following:

4.1.1 Quantity (weight and number of pieces),

4.1.2 Name of material (stainless steel),

4.1.3 Condition (hot-rolled, cold-rolled, annealed, heat-

treated),

4.1.4 Finish (see Section

11 for Sheet, Section 12 for Strip,

and Section 13 for Plates). In the case of polished ﬁnishes,

specify whether one or both sides are to be polished,

4.1.5 Temper (if the applicable material speciﬁcation re-

quires this detail),

4.1.6 Form (plate, sheet, or strip),

4.1.7 Dimensions (thickness, width, length),

4.1.7.1 Thickness shall be ordered to decimal or fractional

thickness. The use of the gage number is discouraged as being

an archaic term of limited usefulness not having general

agreement on meaning. The gage number shall not be a basis

for rejection.

4.1.7.2 Thickness, width, and length, when applicable,

should be ordered in the same units, for example, 0.060 in. by

48 in. by 120 in. [1.52 mm by 1219 mm by 3048 mm].

4.1.8 Edge, strip only (see Section

14 for Cold-Rolled

Strip),

4.1.9 Type or UNS designation, refer to the applicable

material speciﬁcation,

4.1.10 Speciﬁcation designation and date of issue,

4.1.11 Additions to speciﬁcation or special requirements,

4.1.12 Restrictions (if desired) on methods for determining

yield strength (see appropriate footnote to mechanical proper-

ties table of the basic material speciﬁcation),

4.1.13 Marking requirements (see Section

25),

4.1.14 Preparation for delivery (see Section 25), and

4.1.15 Magnetic permeability test (when required). Refer to

Section

19.

NOTE 1—A typical ordering description is as follows: 200 pieces,

stainless steel sheets, 0.060 in. by 48 in. by 120 in., Type 410 No. 2B

ﬁnish, ASTM A 176-XX.

5. Process

5.1 The steel shall be manufactured/produced by the follow-

ing or as speciﬁed in the applicable material speciﬁcation.

5.1.1 The steel shall be made by one of the following

processes: electric-arc, electric-induction, or other suitable

processes.

5.1.2 If a speciﬁc type of melting is required by the

purchaser, it shall be so speciﬁed on the purchase order.

6. Heat Analysis

6.1 Methods and practices relating to chemical analysis

shall be in accordance with Test Methods, Practices, and

Terminology

A 751.

6.2 An analysis of each heat shall be made by the steel

producer to determine the percentages of the elements speciﬁed

in the applicable material speciﬁcation. This analysis shall be

made from a test sample taken during the pouring of the melt,

or from the in-process product later in the manufacturing ﬂow.

6.2.1 The heat analysis shall conform to the chemical

requirements for each of the speciﬁed elements for the grade

ordered, as listed in the applicable product speciﬁcation.

6.2.2 All commercial metals contain small amounts of

elements other than those which are speciﬁed. It is neither

practical nor necessary to specify limits for unspeciﬁed ele-

ments, whether intentionally added unspeciﬁed elements, re-

sidual elements, or trace elements, that can be present. The

producer is permitted to analyze for unspeciﬁed elements and

is permitted to report such analyses. The presence of an

unspeciﬁed element and the reporting of an analysis for that

element shall not be a basis for rejection, unless the presence of

that element causes the loss of a property typically expected for

that metal, for the type and quality ordered.

6.2.3 The purchaser is permitted to require in the purchase

order a maximum limit for an individual element not speciﬁed

in the product speciﬁcation. Such a requirement for an element

not listed in the product speciﬁcation, when acknowledged in

Available from Automotive Industry Action Group (AIAG), 26200 Lahser Rd.,

Suite 200, Southﬁeld, MI 48034.

Available from American National Standards Institute (ANSI), 25 W. 43rd St.,

4th Floor, New York, NY 10036.

Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700

Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

A 480/A 480M – 06a

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

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the order acceptance, shall be treated as a speciﬁed element,

with determination of chemical analysis and reporting of that

analysis.

6.2.4 The purchaser is permitted to make the requirements

for any element more stringent, that is, require higher mini-

mums for elements having minimum requirements or ranges

with minimum requirements, or requiring lower maximums for

elements having speciﬁed maximums, or ranges with maxi-

mums. The purchaser is not permitted to make chemical

requirements less stringent.

6.2.5 Analysis limits shall be established for speciﬁc

elements rather than groups of elements, including but not

limited to all others, rare earths, and balance, unless all

elements in such a group are similar in technical effect and are

associated in typical methods of chemical analysis.

6.3 The steel shall not contain an unspeciﬁed element for

the ordered grade to the extent that the steel conforms to the

requirements of another grade for which that element is a

speciﬁed element having a required minimum content. For this

requirement, a grade is deﬁned as an alloy described individu-

ally and identiﬁed by its own UNS designation in a table of

chemical requirements within this speciﬁcation or any speciﬁ-

cation listed within the scope as being covered by the speciﬁ-

cation.

6.4 The producer is not permitted to certify that material is

in compliance with an ASTM product speciﬁcation when the

purchase order has required that the material contain as a

minimum or range an element that is neither a speciﬁed

element nor an intentionally added unspeciﬁed element for the

ordered grade in accordance with the deﬁnitions of Test

Methods, Practices, and Terminology

A 751.

7. Product Analysis

7.1 The purchaser is permitted to perform a product analysis

(formerly check analysis) to verify the identity of the ﬁnished

material representing each heat or lot. Such analysis shall be

made by any of the commonly accepted methods that will

positively identify the material.

7.2 The chemical composition determined in accordance

with

7.1 shall conform to the limits of the material speciﬁcation

within the tolerances of

Table A1.1, unless otherwise speciﬁed

in the applicable material speciﬁcation or the purchase order.

The allowable variation of a particular element in a single

sample for product analysis is permitted to be either above or

below the speciﬁed range. However, percentages must exhibit

the same tendencies in all samples; that is, the several

determinations of any individual element in a heat shall not

vary both above and below the speciﬁed range.

8. Material Test Report and Certiﬁcation

8.1 A report of the results of all tests required by the product

speciﬁcation shall be supplied to the purchaser. This material

test report shall reference the product speciﬁcation designation

and year date indicating that the material was manufactured,

sampled, tested, and inspected in accordance with requirements

of the product speciﬁcation and has been found to meet those

requirements. The material test report shall report the melting

process when the purchase order requires either a speciﬁc type

of melting or requires that the melting process used is to be

reported.

8.1.1 The report shall indicate the type of steel. If certifying

that the material conforms to the requirements for more than

one type of steel, the manufacturer may indicate each type of

steel on the report, or may issue a separate report for each type

of steel.

8.2 A signature is not required on the report. However, the

document shall clearly identify the organization submitting the

report. Not withstanding the absence of a signature, the

organization submitting the document is responsible for its

content.

8.3 A material test report, certiﬁcate of inspection, or similar

document printed from or used in electronic form from an

electronic data interchange (EDI) transmission shall be re-

garded as having the same validity as a counterpart printed in

the certiﬁers’ facility. The content of the EDI transmitted

document must meet the requirements of the invoked ASTM

standard(s) and conform to any existing EDI agreement be-

tween the purchaser and the supplier. Notwithstanding the

absence of a signature, the organization submitting the EDI

transmission is responsible for the content of the report.

8.4 When ﬁnished material is supplied to a purchase order

specifying the product speciﬁcation, the organization supply-

ing that material shall provide the purchaser with a copy of the

original manufacturer’s test report.

NOTE 2—Notwithstanding the absence of a signature, the organization

submitting the report is responsible for the content of the report.

OTE 3—The industry deﬁnition as invoked here is: EDI is the

computer-to-computer exchange of business information in a standard

format such as ANSI ASC X 12.

8.4.1 When the original manufacturer’s test report was

provided by EDI to the organization supplying the ﬁnished

material to the purchaser, the organization supplying the

ﬁnished material shall provide to the purchaser a printed form

of the original test report or shall retransmit the test report by

EDI to the purchaser. In either case, the test report shall be

complete with the full identiﬁcation of the original manufac-

turer and with all data provided on the test report of the original

manufacturer.

9. Permitted Variations in Dimensions and Weight

9.1 Sheet, strip, and plate shall conform to the permitted

variations in thickness, width, length and ﬂatness, and other

properties when speciﬁed, as listed in

Annex A2 and Annex A3

for A 480 and A 480M respectively, for the ordered product

form, or as agreed upon by seller and user and speciﬁed in the

purchase order.

10. Workmanship

10.1 The material shall be of uniform quality consistent

with good manufacturing and inspection practices. The steel

shall have no imperfections of a nature or degree, for the type

and quality ordered, that will adversely affect the stamping,

forming, machining, or fabrication of ﬁnished parts.

10.2 Sheet, Strip, and Plate—For sheet, and strip with No.

1 ﬁnish and plate with hot-roll anneal or hot-roll anneal and

pickle ﬁnish it is permitted to grind to remove surface

A 480/A 480M – 06a

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

--`,,```,,,,````-`-`,,`,,`,`,,`---

imperfections, provided such grinding does not reduce the

thickness or width at any point beyond the permissible varia-

tions in dimensions. An iron free abrasive wheel shall be used

for such grinding and shall be operated at a speed ample to

ensure that defective areas are cleanly cut out.

11. Finish for Sheet

11.1 The types of ﬁnish available on sheet products are:

11.1.1 No. 1 Finish—Hot-rolled, annealed, and descaled.

11.1.2 No. 2D Finish—Cold-rolled, dull ﬁnish.

11.1.3 No. 2B Finish—Cold-rolled, bright ﬁnish.

11.1.3.1 Bright Annealed Finish—A bright cold-rolled ﬁn-

ish retained by ﬁnal annealing in a controlled atmosphere

furnace.

11.1.4 No. 3 Finish—Intermediate polished ﬁnish, one or

both sides.

11.1.5 No. 4 Finish—General purpose polished ﬁnish, one

or both sides.

11.1.6 No. 6 Finish—Dull satin ﬁnish, Tampico brushed,

one or both sides.

11.1.7 No. 7 Finish—High luster ﬁnish.

11.1.8 No. 8 Finish—Mirror ﬁnish.

11.1.9 TR Finish—Cold-worked to obtain speciﬁed proper-

ties.

NOTE 4—Explanation of Sheet Finishes:

No. 1—Commonly referred to as hot-rolled annealed and pickled or

descaled. This is a dull, nonreﬂective ﬁnish.

No. 2D—A smooth, nonreﬂective cold-rolled annealed and pickled or

descaled ﬁnish. This nondirectional ﬁnish is favorable for retention of

lubricants in deep drawing applications.

No. 2B—A smooth, moderately reﬂective cold-rolled annealed and

pickled or descaled ﬁnish typically produced by imparting a ﬁnal light

cold-rolled pass using polished rolls. This general-purpose ﬁnish is more

readily polished than No. 1 or 2D ﬁnishes. Product with 2B ﬁnish is

normally supplied in the annealed plus lightly cold-rolled condition unless

a tensile-rolled product is speciﬁed.

Bright Annealed Finish —A smooth, bright, reﬂective ﬁnish typically

produced by cold rolling followed by annealing in a protective atmosphere

so as to prevent oxidation and scaling during annealing.

No. 3—A linearly textured ﬁnish that may be produced by either

mechanical polishing or rolling. Average surface roughness (R

) may

generally be up to 40 micro-inches. A skilled operator can generally blend

this ﬁnish. Surface roughness measurements differ with different instru-

ments, laboratories, and operators. There may also be overlap in measure-

ments of surface roughness for both No. 3 and No. 4 ﬁnishes.

No. 4—A linearly textured ﬁnish that may be produced by either

mechanical polishing or rolling. Average surface roughness (R

) may

generally be up to 25 micro-inches. A skilled operator can generally blend

this ﬁnish. Surface roughness measurements differ with different instru-

ments, laboratories, and operators. There may also be overlap in measure-

ments of surface roughness for both No. 3 and No. 4 ﬁnishes.

No. 6—This ﬁnish has a soft, satin appearance typically produced by

tampico brushing a No. 4 ﬁnish.

No. 7—Has a high degree of reﬂectivity. It is produced by buffing a

ﬁnely ground surface, but the grit lines are not removed. It is chieﬂy used

for architectural or ornamental purposes.

No. 8—This is a highly reﬂective, smooth ﬁnish typically produced by

polishing with successively ﬁner grit abrasives, then buffing. Typically,

very faint buff of polish lines may still be visible on the ﬁnal product.

Blending after part assembly may be done with buffing.

TR Finish—The ﬁnish resulting from the cold-rolling of an annealed

and descaled or bright annealed product to obtain mechanical properties

higher than that of the annealed condition. Appearance will vary depend-

ing upon the starting ﬁnish, amount of cold work, and the alloy.

Architectural Finishes—Sometimes described as a No. 5 ﬁnish, these

are a separate category and may be negotiated between buyer and seller,

as there are many techniques and ﬁnish variations available throughout the

world.

11.1.10 Architectural ﬁnish, No. 5, or other proprietary

names are special ﬁnishes.

11.1.11

Note 4 is not meant to be restrictive or to be used as

a basis for rejection but is intended to give general guidelines.

Various production methods may be used to obtain these

ﬁnishes.

11.1.12 Sheets can be produced with one or two sides

polished. When polished on one side only, it is permitted to

rough grind the other side in order to obtain the necessary

ﬂatness.

12. Finish for Strip

12.1 The various types of ﬁnish procurable on cold-rolled

strip products are:

12.1.1 No. 1 Finish—Cold-rolled to speciﬁed thickness,

annealed, and descaled.

12.1.2 No. 2 Finish—Same as No. 1 Finish, followed by a

ﬁnal light cold-roll pass, generally on highly polished rolls.

12.1.3 Bright Annealed Finish—A bright cold-rolled ﬁnish

retained by ﬁnal annealing in a controlled atmosphere furnace.

12.1.4 TR Finish—Cold-worked to obtain speciﬁed proper-

ties.

12.1.5 Polished Finish—Stainless steel strip is also avail-

able in polished ﬁnishes such as No. 3 and No. 4, which are

explained in

Note 4.

NOTE 5—Explanation of Strip Finishes:

No. 1—Appearance of this ﬁnish varies from dull gray matte ﬁnish to

a fairly reﬂective surface, depending largely upon composition. This ﬁnish

is used for severely drawn or formed parts, as well as for applications

where the brighter No. 2 Finish is not required, such as parts for heat

resistance.

No. 2—This ﬁnish has a smoother and more reﬂective surface, the

appearance of which varies with composition. This is a general purpose

ﬁnish, widely used for household and automotive trim, tableware, utensils,

trays, etc.

Bright Annealed Finish—See

Note 4.

TR Finish—See

Note 4.

13. Finish for Plates

13.1 The types of ﬁnish available on plates are:

13.1.1 Hot-Rolled or Cold-Rolled, and Annealed or Heat

Treated—Scale not removed, an intermediate ﬁnish. Use of

plates in this condition is generally conﬁned to heat-resisting

applications. Scale impairs corrosion resistance.

13.1.2 Hot-Rolled or Cold-Rolled, and Annealed or Heat

Treated, and Blast Cleaned or Pickled—Condition and ﬁnish

commonly preferred for corrosion-resisting and most heat-

resisting applications, essentially a No. 1 Finish.

13.1.3 Hot-Rolled or Cold-Rolled, and Annealed or Heat

Treated, and Surface Cleaned and Polished—Polish ﬁnish is

generally No. 4 Finish.

13.1.4 Hot-Rolled or Cold-Rolled, and Annealed or Heat

Treated, and Descaled, and Temper Passed—Smoother ﬁnish

for specialized applications.

A 480/A 480M – 06a

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

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13.1.5 Hot-Rolled or Cold-Rolled, and Annealed or Heat

Treated, and Descaled; and Cold-Rolled, and Annealed or

Heat Treated, and Descaled, and Optionally Temper Passed—

Smooth ﬁnish with greater freedom from surface imperfections

than in

13.1.4.

14. Edges for Cold-Rolled Strip

14.1 The types of edges available on strip products are:

14.1.1 No. 1 Edge—A rolled edge, either round or square as

speciﬁed.

14.1.2 No. 3 Edge—An edge produced by slitting.

14.1.3 No. 5 Edge—An approximately square edge pro-

duced by rolling or ﬁling after slitting.

15. Heat Treatment

15.1 The heat treatments shown in this section are to be

followed unless otherwise speciﬁed in the applicable material

speciﬁcation. Heat treatment thermal cycles shall be separate

from other thermal processing cycles; for example, in-process

thermal cycles are not permitted as a substitute for the separate

annealing cycle.

15.2 Austenitic Types:

15.2.1 The material shall be solution annealed to meet the

mechanical property requirements of the applicable material

speciﬁcation unless otherwise stated in the material speciﬁca-

tion.

15.2.2 Except as indicated in

Table A1.2, Series 300,

XM-15, N08800, S30415, S30815, S31725, S31726, and

S32615 austenitic chromium-nickel steels, when speciﬁed on

the purchase order, shall be capable of meeting the test for

resistance to intergranular corrosion speciﬁed in

18.2.

15.2.3 For grades stabilized with titanium or columbium,

refer to

Note 6.

NOTE 6—Solution-annealing temperatures above 1950°F [1066°C] can

impair the resistance to intergranular corrosion after subsequent exposure

to sensitizing conditions in the stabilized grades, Types 309Cb, 309HCb,

310Cb, 310HCb, 316Ti, 316Cb, 321, 321H, 347, 347H, 348, 348H,

S35135, and S35125. When intergranular corrosion is of concern, the

purchaser should specify the corrosion test of

18.2 (to be conducted on

sensitized specimens). The manufacturer is permitted, if necessary, use a

lower temperature resolution anneal or a stabilization anneal after a high

temperature solution anneal in order to meet corrosion test requirements.

Consideration should be given to the corrosive media before using a

stabilization anneal at less than 1800°F [982°C], as such treatment is not

equally effective for all media.

15.2.4 For the stabilized H types, it is noted that the heat

treatment requirements shown in

Table A1.2 differ as a

function of whether the material was cold worked or hot

ﬁnished.

15.2.5 The chromium-manganese-nickel types (201, 202,

S20103, S20400, S20153, S21800, XM-17, XM-18, XM-19,

XM-29, and XM-31) shall be solution annealed to meet the

mechanical property requirements of the applicable material

speciﬁcation and, to exhibit adequate resistance to intergranu-

lar corrosion (see

18.2). For S20161, the heat treatment is

speciﬁed in

Table A1.2.

15.2.5.1 Note that some of these types contain high carbon

content that can adversely affect resistance to intergranular

corrosion.

15.3 Duplex Types—The duplex types shall be solution

annealed in accordance with Table A1.2.

15.4 Martensitic and Ferritic Types:

15.4.1 The chromium steels (S32803, 400 Series, S40945,

S41045, S41050, S41500, S43932, S44400, S44635, S44660,

S44700, S44735, S44800, XM-27, and XM-33) shall be heat

treated in such a manner as to satisfy all the requirements for

mechanical and bending properties speciﬁed in the applicable

material speciﬁcation and (except for 400 Series, S41050, and

S41500) to provide for adequate resistance to intergranular

attack.

15.4.2 For S41500, heat to 1750°F [955°C] minimum, air

cool to 200°F [93°C] or lower prior to any optional interme-

diate temper and prior to ﬁnal temper. The ﬁnal temper shall be

between 1050°F [566°C] and 1150°F [621°C].

16. Number of Tests

16.1 Unless otherwise speciﬁed by the applicable material

speciﬁcation or by agreement between the seller and the

purchaser to perform a greater number of tests, the following

number of tests are to be performed.

16.1.1 In the case of plate, sheet, and strip produced in coil

form, two or more hardness tests (one from each end of the

coil); one bend test, when required; one permeability test, when

required; and one or more tension tests shall be made on

specimens taken from each coil. If the hardness difference

between the two ends of the coil exceeds 5 HRB, or equivalent,

or if the material is temper rolled, tensile properties must be

determined on both coil ends.

16.1.2 In the case of plate, sheet, or strip produced in cut

lengths, one tension test; two tension tests if the material is

temper rolled (one tension test for single piece lots); one bend

test when required, and one or more hardness tests shall be

made on each 100 or less pieces of the same heat and nominal

thickness rolled separately or continuously and heat treated

within the same operating period, either as a lot or continu-

ously.

NOTE 7—The term continuously, as applied to heat treatment, is meant

to describe a heat-treating operation in which one cut length follows

another through the furnace. Interspersement of different melts is permis-

sible if they are of approximately the same nominal thickness and are heat

treated in the same operating period and under the same conditions (time

and temperature).

16.1.3 One intergranular corrosion test, when required, shall

be selected from each heat and thickness subjected to the same

heat treatment practice. It is permitted to obtain such speci-

mens from specimens selected for mechanical testing.

17. Test Specimens

17.1 Tension Test:

17.1.1 Tension test specimens shall be taken from ﬁnished

material and shall be selected in either or both longitudinal and

transverse direction. The tension test specimen shall conform

to the appropriate sections of Test Methods and Deﬁnitions

A 370, unless otherwise speciﬁed in the applicable material

speciﬁcation or agreed upon by the seller and the purchaser.

17.1.2 The testing speed between the yield strength and the

fracture of the specimen, shall be conducted at a constant strain

rate between

⁄

in. [3.18 mm] and

⁄

in. [12.70 mm]

A 480/A 480M – 06a

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

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