ASTM A27.pdf

Designation: A 27/A 27M – 05

Standard Specification for

Steel Castings, Carbon, for General Application

1

This standard is issued under the fixed designation A 27/A 27M; 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*

1.2 Several grades and two classes of steel castings are

covered, as indicated below. The grade and class desired shall

be specified by the purchaser.

1.2.1 Grade N-1—Chemical analysis only.

1.2.2 Grade N-2—Heat-treated but not mechanically tested.

1.2.3 Grade U-60-30 [415-205]—Mechanically tested but

not heat-treated.

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. 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 specifi-

cation. Inch-pound units are applicable for material ordered to

Specification A 27 and SI units for material ordered to Speci-

fication A 27M.

2. Referenced Documents

A 781/A 781M Specification for Castings, Steel and Alloy,

3. General Conditions for Delivery

3.1 Material furnished to this specification shall conform to

the requirements of Specification

any supplementary requirements that are indicated in the

purchase order. Failure to comply with the general require-

ments of Specification

4.1 Orders for material under this specification should

include the following information in proper sequence.

4.1.1 Quantity,

4.1.2 Specification, grade (

4.1.3 Description of the casting by pattern number or

drawing,

4.1.4 Options in the specification, and

4.1.5 Supplementary requirements desired, including stan-

dards of acceptance.

A01.18 on Castings.

Current edition approved March 1, 2005. Published March 2005. Originally

approved in 1901 as A 27 - 01. Last previous edition approved in 2003 as

A 27/A 27M – 03.

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.