ASTM A915/A915M-93(1998)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact
ASTM International (www.astm.org) for the latest information.
Designation: A 915/A915M – 93 (Reapproved 1998) An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Steel Castings, Carbon, and Alloy, Chemical Requirements
Similar to Standard Wrought Grades
This standard is issued under the fixed designation A 915/A915M; 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.
1. Scope 4.2 Castings shall be heat treated either by full annealing,
normalizing, normalizing and tempering, or quenching and
1.1 This specification covers carbon and low alloy steel
tempering. Unless otherwise specified in the inquiry, contract,
castings having chemical analyses similar to that of the
or order, the castings may be heat treated by any of these heat
standard wrought grades.
treatments or combination of these heat treatments at the option
1.2 Several grades are covered and are designated by
of the manufacturer.
chemical composition shown in Table 1.
4.3 Heat treatment shall be performed after the castings
1.3 The values stated in either inch-pound units or SI units
have been allowed to cool below the transformation range.
are to be regarded separately as standard. Within the text, the
4.4 The furnace temperature for heat treating shall be
SI units are shown in brackets. The values stated in each
effectively controlled by the use of recording-type pyrometers.
system are not exact equivalents; therefore, each system must
be used independently of the other. Combining values from the
5. Chemical Composition
two systems may result in nonconformance with the specifi-
5.1 The steel shall conform to the requirements of chemical
cation. Inch-pound units are applicable for material ordered to
composition as prescribed in Table 1.
Specification A 915 and SI units for material ordered to
5.2 The product analysis tolerances given in Specification
Specification A 915M.
A 781/A 781M shall apply to all product analysis performed on
2. Referenced Documents castings supplied to this specification.
2.1 ASTM Standards:
6. General Conditions for Delivery
A 370 Test Methods and Definitions for Mechanical Testing
6.1 Material furnished to this specification shall conform to
of Steel Products
the applicable requirements of Specification A 781/A 781M,
A 781/A781M Specification for Castings, Steel and Alloy,
including the supplementary requirements indicated on the
Common Requirements, for General Industrial Use
purchaser’s order.
3. Ordering Information
7. Repair by Welding
3.1 Orders for material under this specification should
7.1 Weld repairs shall be inspected to the same quality
include the following information:
standards used to inspect the castings. When castings are
3.1.1 Quantity,
produced with Supplementary Requirement S 1 specified, weld
3.1.2 Specification, including year, date, and grade,
repairs shall be inspected by magnetic particle examination to
3.1.3 Description of the casting by pattern number or
the same standards used to inspect the castings. When castings
drawing. Dimensional tolerances shall be included on the
are produced with Supplementary Requirement S 2 specified,
casting drawing,
weld repairs in which the depth of the cavity prepared for
3.1.4 Options in the specification, and
repair welding exceeds 20 % of the wall thickness or 1 in. [25
3.1.5 Supplementary requirements desired, including stan-
mm], whichever is smaller, or in which the cavity prepared for
dards of acceptance.
2 2
welding is greater than approximately 10 in. [65 cm ], shall be
4. Heat Treatment radiographed to the same standards used to inspect the cast-
ings.
4.1 Grades SC 1020 and SC 1025 may be supplied unheat
7.2 Weld repairs shall be considered major when the depth
treated or heat treated as described in 4.2.
of the cavity prepared for welding exceeds 20 % of the wall
thickness or 1 in. [25 mm], whichever is smaller, or when the
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
2 2
extent of the cavity exceeds 10 in. [65 cm ]. Castings
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
produced from Grades SC 1020, SC 1025, or SC 1030 which
A01.18 on Castings.
Current edition approved Feb. 15, 1993. Published September 1993.
contain major weld repairs shall receive a postweld heat
Annual Book of ASTM Standards, Vol 01.03.
treatment. Castings produced from any of the other grades shall
Annual Book of ASTM Standards, Vol 01.02.
NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬discontinued.¬
Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
A 915/A915M
TABLE 1 Chemical Composition (weight, percent)
Grade C Mn P, max S, max Si Ni Cr Mo
SC 1020 0.18/0.23 0.40/0.80 0.040 0.040 0.30/0.60 . . . . . . . . .
(J02003)
SC 1025 0.22/0.28 0.40/0.80 0.040 0.040 0.30/0.60 . . . . . . . . .
(J02508)
SC 1030 0.28/0.34 0.50/0.90
...