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ASTM A915/A915M-93(2003)

(Specification)

Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades

Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades

SCOPE
1.1 This specification covers carbon and low alloy steel castings having chemical analyses similar to that of the standard wrought grades.
1.2 Several grades are covered and are designated by chemical composition shown in Table 1.
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 specification. Inch-pound units are applicable for material ordered to Specification A915 and SI units for material ordered to Specification A915M.

General Information

Status
Historical
Publication Date
09-Apr-2003
ICS
77.140.85 - Iron and steel forgings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A915/A915M-93(1998) - Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades
Effective Date
10-Apr-2003
Replaced By
ASTM A915/A915M-08 - Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades
Effective Date
01-Mar-2008
Referred By
ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Apr-2003
Referred By
ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
10-Apr-2003

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ASTM A915/A915M-93(2003) - Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought GradesASTM A915/A915M-93(2003) - Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades
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ASTM A915/A915M-93(2003) - Standard Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades
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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/A 915M – 93 (Reapproved 2003)
Standard Specification for
Steel Castings, Carbon, and Alloy, Chemical Requirements
Similar to Standard Wrought Grades
This standard is issued under the fixed designationA915/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. Heat Treatment
1.1 This specification covers carbon and low alloy steel 4.1 Grades SC 1020 and SC 1025 may be supplied unheat
castings having chemical analyses similar to that of the treated or heat treated as described in 4.2.
standard wrought grades. 4.2 Castings shall be heat treated either by full annealing,
1.2 Several grades are covered and are designated by normalizing, normalizing and tempering, or quenching and
chemical composition shown in Table 1. tempering. Unless otherwise specified in the inquiry, contract,
1.3 The values stated in either inch-pound units or SI units or order, the castings may be heat treated by any of these heat
are to be regarded separately as standard. Within the text, the treatmentsorcombinationoftheseheattreatmentsattheoption
SI units are shown in brackets. The values stated in each of the manufacturer.
system are not exact equivalents; therefore, each system must 4.3 Heat treatment shall be performed after the castings
be used independently of the other. Combining values from the have been allowed to cool below the transformation range.
two systems may result in nonconformance with the specifi- 4.4 The furnace temperature for heat treating shall be
cation. Inch-pound units are applicable for material ordered to effectively controlled by the use of recording-type pyrometers.
Specification A 915 and SI units for material ordered to
5. Chemical Composition
Specification A 915M.
5.1 The steel shall conform to the requirements of chemical
2. Referenced Documents
composition as prescribed in Table 1.
2.1 ASTM Standards: 5.2 The product analysis tolerances given in Specification
A 370 Test Methods and Definitions for MechanicalTesting A 781/A 781Mshallapplytoallproductanalysisperformedon
of Steel Products castings supplied to this specification.
A 781/A 781M Specification for Castings, Steel and Alloy,
3 6. General Conditions for Delivery
Common Requirements, for General Industrial Use
6.1 Material furnished to this specification shall conform to
3. Ordering Information
the applicable requirements of Specification A 781/A 781M,
3.1 Orders for material under this specification should including the supplementary requirements indicated on the
include the following information: purchaser’s order.
3.1.1 Quantity,
7. Repair by Welding
3.1.2 Specification, including year, date, and grade,
3.1.3 Description of the casting by pattern number or 7.1 Weld repairs shall be inspected to the same quality
standards used to inspect the castings. When castings are
drawing. Dimensional tolerances shall be included on the
casting drawing, produced with Supplementary Requirement S1 specified, weld
repairs shall be inspected by magnetic particle examination to
3.1.4 Options in the specification, and
3.1.5 Supplementary requirements desired, including stan- the same standards used to inspect the castings. When castings
are produced with Supplementary Requirement S2specified,
dards of acceptance.
weld repairs in which the depth of the cavity prepared for
repair welding exceeds 20 % of the wall thickness or 1 in. [25
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
mm], whichever is smaller, or in which the cavity prepared for
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
2 2
weldingisgreaterthanapproximately10in. [65cm ],shallbe
A01.18 on Castings.
radiographed to the same standards used to inspect the cast-
Current edition approved April 10, 2003. Published April 2003. Originally
approved in 1993. Last previous edition approved in 1998 as A 915/A 915M – 93
ings.
(1998).
Annual Book of ASTM Standards, Vol 01.03.
Annual Book of ASTM Standards, Vol 01.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 915/A 915M – 93 (2003)
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 0.040 0.040 0.30/0.60 . . . . . . . . .
(J03012)
SC 1040 0.37/0.44 0.50/0.90 0.040 0.040 0.30/0.60 . . . . . . . . .
(J04003)
SC 1045 0.43/0.50 0.50/0.90 0.040 0.040 0.30/0.60 . . . . . . . . .
(J04502)
SC 4130 0.28/0.33 0.40/0.80 0.035 0.040 0.30/0.60 . . . 0.80/1.10 0.15/0.25
(J13502)
SC 4140 0.38/0.43 0.70/1.10 0.035 0.040 0.30/0.60 . . . 0.80/1.10 0.15/0.25
(J14045)
SC 4330 0.28/0.33 0.60/0.90 0.035 0.040 0.30/0.60 1.65/2.00 0.70/0.90 0.20/0.30
(J23259)
SC 4340 0.38/0.43 0.60/0.90 0.035 0.040 0.30/0.60 1.65/2.00 0.70/0.90 0.20/0.30
(J24053)
SC 8620 0.18/0.23
...

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4.1 This practice shall be used when ultrasonic inspection is required by the order or specification for inspection purposes where the acceptance of the forging is based on limitations of the number, amplitude, or location of discontinuities, or a combination thereof, which give rise to ultrasonic indications.  
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FIG. 1 Bored Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging bore surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 2 Solid Forgings
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SCOPE
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SCOPE
1.1 This specification covers the determination of heat stability of steam turbine shafts and rotor forgings to ensure stability at operating temperature. This specification is not ordinarily applicable to generator rotor forgings.  
1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the specification, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract.  
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ABSTRACT
This specification deals with ferritic alloy steel forgings for high-pressure and high-temperature parts, such as boilers, pressure vessels, and associated equipment. The steel grades covered here include the following: Grade F1; Grade F11, Classes 1, 2, and 3; Grade F12; Grade F5; Grade F5A; Grade F9; Grade F6; Grades F21 and F22, Classes 1 and 3; Grade F91, Grade F3V; and Grade F22V. Other steel grades may also be treated under this specification. Alloy steels shall be melted, forged, and rough machined at stipulated conditions. Except as permitted for Grade F22V, steel forgings shall be annealed or normalized and tempered, but may alternatively be liquid quenched and tempered as well. Impact and Charpy V-notch tests shall be performed wherein specimens shall conform to specified mechanical requirements such as notch toughness, tensile strength, yield strength, elongation, and reduction of area. Materials shall also undergo heat and product analyses and conform to specified chemical requirements.
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1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Standard Practice for Magnetic Particle Examination of Steel Forgings

ABSTRACT
This test method covers the procedures for the standard practice of performing magnetic particle examination on steel forgings. The inspection medium shall consist of finely divided ferromagnetic particles, whose size, shape and magnetic properties, both individually and collectively, shall be taken into account. Forgings may be magnetized in the longitudinal or circular direction by employing the surge or continuous current flow methods. Magnetization may be applied by passing current through the piece or by inducing a magnetic field by means of a central conductor, such as a prod or yoke, or by coils. While the material is properly magnetized, the magnetic particles may be applied by either the dry method, wet method, or fluorescent method. The parts shall also be sufficiently demagnetized after inspection so that residual or leakage fields will not interfere with future operations to which the steel forgings shall be used for. Indications to be evaluated are grouped into three broad classes, namely: surface defects, which include laminar defects, forging laps and folds, flakes (thermal ruptures caused by entrapped hydrogen), heat-treating cracks, shrinkage cracks, grinding cracks, and etching or plating cracks; subsurface defects, which include stringers of nonmetallic inclusions, large nonmetallics, cracks in underbeads of welds, and forging bursts; and nonrelevant or false indications, which include magnetic writing, changes in section, edge of weld, and flow lines.
SIGNIFICANCE AND USE
4.1 For ferromagnetic materials, magnetic particle examination is widely specified for the detection of surface and near surface discontinuities such as cracks, laps, seams, and linearly oriented nonmetallic inclusions. Such examinations are included as mandatory requirements in some forging standards such as Specification A508/A508M.  
4.2 Use of direct current or rectified alternating (full or half wave) current as the power source for magnetic particle examination allows detection of subsurface discontinuities.
SCOPE
1.1 This practice2 covers a procedure for magnetic particle examination of steel forgings. The procedure will produce consistent results upon which acceptance standards can be based. This practice does not contain acceptance standards or recommended quality levels.  
1.2 Only direct current or rectified alternating (full or half wave) current shall be used as the electric power source for any of the magnetizing methods. Alternating current is not permitted because its capability to detect subsurface discontinuities is very limited and therefore unsuitable.  
1.2.1 Portable battery powered electromagnetic yokes are outside the scope of this practice.
Note 1: Guide E709 may be utilized for magnetic particle examination in the field for machinery components originally manufactured from steel forgings.  
1.3 The minimum requirements for magnetic particle examination shall conform to practice standards of Practice E1444/E1444M. If the requirements of this practice are in conflict with the requirements of Practice E1444/E1444M, the requirements of this practice shall prevail.  
1.4 This practice and the applicable material specifications are expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M” specification designation [SI units], the material shall be furnished to inch-pound units.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices ...

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ASTM
ASTM A473-23a(Specification)
Standard Specification for Stainless Steel Forgings

ABSTRACT
This specification covers austenitic, austenitic-ferritic, ferritic, and martensitic stainless steel forgings for general use, and for low- or high-temperature service. The different solution heat treatment and annealing treatment received by the steel material are presented in details. The steel shall conform to the specified chemical composition and room temperature mechanical requirements. The forgings shall be produced with prolongations for testing, unless otherwise specified. The number of and procedure for tension test for forgings depending on their weight are presented. The tension test specimens shall be taken from the test prolongations or from the forgings.
SCOPE
1.1 This specification covers austenitic, austenitic-ferritic, ferritic, and martensitic stainless steel forgings for general use, and for low- or high-temperature service.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 Supplementary requirements from Specification A788/A788M may be specified when additional testing, inspection, or processing is required.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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