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ASTM A705/A705M-95(2000)

(Specification)

Standard Specification for Age-Hardening Stainless Steel Forgings

Standard Specification for Age-Hardening Stainless Steel Forgings

SCOPE
1.1 This specification covers age-hardening stainless steel forgings for general use.  
1.2 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards; within the text and tables, the SI units are shown in [brackets]. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.3 Unless the order specifies an "M" designation, the material shall be furnished to inch-pound units.
Note 1--Bar products are covered by Specification A564/A564M.

General Information

Status
Historical
Publication Date
31-Dec-1999
ICS
77.140.85 - Iron and steel forgings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.17 - Flat-Rolled and Wrought Stainless Steel
Current Stage
Ref Project

Relations

Replaced By
ASTM A705/A705M-95(2004) - Standard Specification for Age-Hardening Stainless Steel Forgings
Effective Date
01-Sep-2004
Referred By
ASTM F1611-20 - Standard Specification for Intramedullary Reamers
Effective Date
01-Jan-2000
Referred By
ASTM A484/A484M-23 - Standard Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
Effective Date
01-Jan-2000
Referred By
ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
Effective Date
01-Jan-2000
Referred By
ASTM A564/A564M-19a - Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
Effective Date
01-Jan-2000

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ASTM A705/A705M-95(2000) - Standard Specification for Age-Hardening Stainless Steel ForgingsASTM A705/A705M-95(2000) - Standard Specification for Age-Hardening Stainless Steel Forgings
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ASTM A705/A705M-95(2000) - Standard Specification for Age-Hardening Stainless Steel Forgings
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 705/A705M – 95 (Reapproved 2000)
Standard Specification for
Age-Hardening Stainless Steel Forgings
This standard is issued under the fixed designation A 705/A705M; 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 3. Ordering Information
1.1 This specification covers age-hardening stainless steel 3.1 It is the responsibility of the purchaser to specify all
forgings for general use. requirements that are necessary for material ordered under this
1.2 The values stated in either inch-pound units or SI specification. Such requirements may include but are not
(metric) units are to be regarded separately as standards; within limited to the following:
the text and tables, the SI units are shown in[brackets]. The 3.1.1 Quantity (weight or number of pieces),
values stated in each system are not exact equivalents; there- 3.1.2 Name of material (age-hardening stainless steel forg-
fore, each system must be used independent of the other. ings),
Combining values from the two systems may result in noncon- 3.1.3 Dimensions, including prints or sketches,
formance with the specification. 3.1.4 Type or UNS designation (Table 1),
1.3 Unless the order specifies an “M” designation, the 3.1.5 Heat treated condition (Section 5),
material shall be furnished to inch-pound units. 3.1.6 Transverse properties when required (7.4),
3.1.7 ASTM designation and date of issue, and
NOTE 1—Bar products are covered by Specification A 564/A 564M.
3.1.8 Special requirements (5.3, 5.4).
3.2 If possible the intended end use of the item should be
2. Referenced Documents
given on the purchase order, especially when the item is
2.1 ASTM Standards:
ordered for a specific end use or uses.
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
NOTE 2—A typical ordering description is as follows: 5 age-hardening
stainless steel forgings, Type 630, solution-annealed, ASTM Specification
A 484/A484M Specification for General Requirements for
A 705 dated __ . End use: pump blocks for oil well equipment.
Stainless Steel Bars, Billets, and Forgings
A 564/A564M Specification for Hot-Rolled and Cold-
4. General Requirements
Finished Age-Hardening Stainless Steel Bars and Shapes
4.1 In addition to the requirements of this specification, all
A 751 Test Methods, Practices, and Terminology for
requirements of the current edition of Specification A 484/
Chemical Analysis of Steel Products
5 A 484M shall apply. Failure to comply with the general
E 527 Practice for Numbering Metals and Alloys (UNS)
requirements of Specification A 484/A 484M, constitutes non-
2.2 Other Documents:
conformance with this specification.
SAE J 1086 Recommended Practice for Numbering Metals
and Alloys (UNS)
5. Materials and Manufacture
5.1 Material for forgings shall consist of billets or bars,
This specification is under the jurisdiction of ASTM Committee A-1 on Steel, either forged, rolled or cast, or a section cut from an ingot. The
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee
cuts shall be made to the required length by a suitable process.
A01.17 on Flat Stainless Steel Products.
This material may be specified to Specification A 564/A 564M.
Current edition approved Jan. 15, 1995. Published March 1995. Originally
5.2 The material shall be forged by hammering, pressing,
published as A 705 – 74. Last previous edition A 705/A 705M – 94.
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
rolling, extruding, or upsetting to produce a wrought structure
cation SA-705/SA-705M in Section II of that Code.
throughout and shall be brought as nearly as possible to the
Annual Book of ASTM Standards, Vol 01.03.
4 finished shape and size by hot working.
Annual Book of ASTM Standards, Vol 01.05.
Annual Book of ASTM Standards, Vol 01.01.
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Warrendale, PA 15096.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 705/A705M – 95 (2000)
5.3 When specified on the order, sample forging may be 7.3 The impact strength shall be determined at 70 to 80°F
sectioned and etched to show flow lines and the condition in [20 to 25°C], by Charpy V-notch specimen Type A as described
regard to internal imperfections. When so specified, the ques- in Test Methods and Definitions A 370.
tion of acceptable and unacceptable metal flow shall be subject 7.4 Material tensile tested and, when specified, impact
to agreement between the manufacturer and the purchaser prior tested in the transverse direction (perpendicular to the forging
to order entry. flow lines) and meeting the requirements shown in Table 3
need not be tested in the longitudinal direction.
5.4 When specified on the order, the manufacturer shall
submit for approval of the purchaser a sketch showing the 7.5 Samples cut from forging shall conform to the mechani-
cal properties of Table 3 when heat treated as specified in Table
shape of the rough forging before machining, or before heat
treating for mechanical properties. 2 and Table 3 and tested in accordance with Test Methods and
Definitions A 370.
5.5 The grain size shall be as fine as practicable and
precautions shall be taken to minimize grain growth.
8. Prolongations for Tests
5.6 Material of types other than XM-9 shall be furnished in
8.1 Subject to Section 7, the forgings shall be produced with
the solution-annealed condition, or in the equalized and over-
prolongations for testing, unless otherwise specified. The
tempered condition, as noted in Table 2, unless otherwise
producer may elect to submit an extra forging to represent each
specified by the purchaser.
test lot instead of prolongations, or the test specimens can be
5.6.1 Types 630, XM-16, and XM-25 may be furnished in
taken from the forgings themselves.
the solution-annealed or age-hardened condition.
9. Number of Tests
6. Chemical Composition
9.1 For all classes of forgings weighing from 5000 to 7000
6.1 The steel shall conform to the chemical composition
lb [2300 to 3200 kg] each, at least one tension test shall be
limits specified in Table 1.
made from each forging.
6.2 Methods and practices relating to chemical analysis
9.2 For all classes of forgings weighing more than 7000 lb
required by this specification shall be in accordance with Test
[3200 kg] each, one tension test shall be made from each end
Methods, Practices, and Terminology A 751.
of each forging. In the case of ring forgings, the tension test
specimen shall be removed from each of two locations on the
7. Mechanical Properties
periphery, approximately 180° apart, or insofar as practicable,
7.1 The material, as represented by mechanical test speci-
from opposite ends of the forging.
mens, shall conform to the mechanical property requirements 9.3 For forgings weighing less than 5000 lb [2300 kg] each,
specified in Table 2 and shall be capable of developing the
one tension test shall be made from each size classification for
properties in Table 3 when heat treated as specified in Table 3.
each heat in each heat treating charge. Where continuous heat
7.2 The yield strength shall be determined by the offset
treating furnaces are used, tests shall be made on 10 % of the
method as described in the current edition of Test Methods and forgings of each size classification from each heat subjected to
Definitions A 370. The limiting permanent offset shall be 0.2 % the same heat treatment practice.
of the gage length of the specimen.
A
TABLE 1 Chemical Requirements
Composition, %
UNS Type Carbon Manganese Phospho- Sul- Sili- Chromium Nickel Alumi- Molyb- Tita- Copper Other
B
Designation rus fur con num denum nium Elements
C
S17400 630 0.07 1.00 0.040 0.030 1.00 15.00–17.50 3.00–5.00 . . . 3.00–5.00
S17700 631 0.09 1.00 0.040 0.030 1.00 16.00–18.00 6.50–7.75 0.75–1.50 . . . .
S15700 632 0.09 1.00 0.040 0.030 1.00 14.00–16.00 6.50–7.75 0.75–1.50 2.00–3.00 . . .
D
S35500 634 0.10–0.15 0.50–1.25 0.040 0.030 0.50 15.00–16.00 4.00–5.00 . 2.50–3.25 . .
S17600 635 0.08 1.00 0.040 0.030 1.00 16.00–17.50 6.00–7.50 0.40 . 0.40–1.20 . .
C
S15500 XM-12 0.07 1.00 0.040 0.030 1.00 14.00–15.50 3.50–5.50 . . . 2.50–4.50
E
S13800 XM-13 0.05 0.20 0.010 0.008 0.10 12.25–13.25 7.50–8.50 0.90–1.35 2.00–2.50 . .
F
S45500 XM-16 0.03 0.50 0.015 0.015 0.50 11.00–12.50 7.50–9.50 . 0.50 0.90–1.40 1.50–2.50
F
S45503 . 0.010 0.50 0.010 0.010 0.20 11.00–12.50 7.50–9.50 . 0.50 1.00–1.35 1.50–2.50
G
S45000 XM-25 0.05 1.00 0.030 0.030 1.00 14.00–16.00 5.00–7.00 . 0.50–1.00 . 1.25–1.75
A
Limits are in percent maximum unless shown as a range or stated otherwise.
B
New designation established in accordance with Practice E 527 and SAEJ1086, Recommended Practice for Numbering Metals and alloys (UNS).
C
Columbium plus tantalum 0.15–0.45.
D
Nitrogen 0.07–0.13.
E
Nitrogen 0.01.
F
Columbium plus tantalum 0.10–0.50.
G
Columbium 8 times carbon minimum.
A 705/A705M – 95 (2000)
TABLE 2 Solution Heat Treatment
A
Mechanical Test Requirements in Solution Treated Condition
B
Elongation
Tensile Strength, min Yield Strength, min Hardness
Condi- Reduction
Type Solution Treatment in 2 in. [50
tion of Area,
Rockwell C, Brinell,
mm] or 4D,
ksi [MPa] ksi [MPa]
minute %
max max
min. %
630 A 1900 6 25°F [1040 6 15°C] (cool . . . . . . 38 363
as required to below 90°F [32°C])
631 A 1900 6 25°F [1040 6 15°C] (water . . . . . . . . . . . . . . . . . . Rb89 229
quench)
C
632 A 1900 6 25°F [1040 6 15°C] (water . . . . . . . . . . . . . . . . . . Rb100 269
quench)
D D
634 A 1900 6 25°F [1040 6 15°C] . . . . . . . 363
quench, hold not less than3hat
minus 100°F or lower
635 A 1900 6 25°F [1040 6 15°C] (air 120 [825] 75 [515] 10 45 32 302
cool)
XM-12 A 1900 6 25°F [1040 6 15°C] (cool . . . . . . 38 363
as required to below 90°F [32°C])
XM-13 A 1700 6 25°F [925 6 15°C] (cool as . . . . . . 38 363
required to below 60°F [16°C])
XM-16 A 1525 6 25°F [830 6 15°C] (cool . . . . . . 36 331
rapidly)
S45503 A 1525 6 25°F [830 6 15°C] (cool . . . . . . 36 331
rapidly)
E
XM-25 A 1900 6 25°F [1040 6 15°C] (cool 125 [860] 95 [655] 10 40 33 311
rapidly)
A
See 6.1.
B
Either Rockwell C hardness or Br
...

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SIGNIFICANCE AND USE
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.  
4.2 The acceptance criteria shall be clearly stated as order requirements.
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1.2 This practice describes a basic procedure of ultrasonically inspecting turbine and generator rotor forgings. It does not restrict the use of other ultrasonic methods such as reference block calibrations when required by the applicable procurement documents nor is it intended to restrict the use of new and improved ultrasonic test equipment and methods as they are developed.  
1.3 This practice is intended to provide a means of inspecting cylindrical forgings so that the inspection sensitivity at the forging center line or bore surface is constant, independent of the forging or bore diameter. To this end, inspection sensitivity multiplication factors have been computed from theoretical analysis, with experimental verification. These are plotted in Fig. 1 (bored rotors) and Fig. 2 (solid rotors), for a true inspection frequency of 2.25 MHz, and an acoustic velocity of 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s]. Means of converting to other sensitivity levels are provided in Fig. 3. (Sensitivity multiplication factors for other frequencies may be derived in accordance with X1.1 and X1.2 of Appendix X1.)  
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
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging centerline 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. 3 Conversion Factors to Be Used in Conjunction with Fig. 1 and Fig. 2 if a Change in the Reference Reflector Diameter is Required
1.4 Considerable verification data for this method have been generated which indicate that even under controlled conditions very significant uncertainties may exist in estimating natural discontinuities in terms of minimum equivalent size flat-bottom holes. The possibility exists that the estimated minimum areas of natural discontinuities in terms of minimum areas of the comparison flat-bottom holes may differ by 20 dB (factor of 10) in terms of actual areas of natural discontinuities. This magnitude of inaccuracy does not apply to all results but should be recognized as a possibility. Rigid control of the actual frequency used, the coil bandpass width if tuned instruments are used, and so forth, tend to reduce the overall inaccuracy which is apt to develop.  
1.5 This practice for inspection applies to solid cylindrical forgings having outer diameters of not less than 2.5 in. [64 mm] nor greater than 100 in. [2540 mm]. It also applies to cylindrical forgings with concentric cylindrical bores having wall thicknesses of 2.5 [64 mm] in. or greater, within the same outer diameter limits as for solid cylinders. For solid sections less than 15 in. [380 mm] in diameter and for bored cylinders of less than 7.5 in. [190 mm] wall thickness the transducer used for the inspection will be different than the transducer used for larger sections.  
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1.1 This is an acceptance specification for the magnetic particle inspection of forged steel crankshafts having main bearing journals or crankpins 4 in. [200 mm] or larger in diameter.  
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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 A388/A388M-23(Practice)
Standard Practice for Ultrasonic Examination of Steel Forgings

ABSTRACT
This practice covers the examination procedures for the contact, pulse-echo ultrasonic examination of heavy steel forgings by the straight and angle-beam techniques. An ultrasonic, pulsed, reflection type of instrument shall be used and shall provide linear presentation for at least 75% of the screen height. The 5% linearity referred to is descriptive of the screen presentation of amplitude. The electronic apparatus shall contain an attenuator, search units, transducers, couplants, reference blocks, and DGS scales. The forging shall be machined to provide cylindrical surfaces for radial examination in the case of round forgings. The ends of the forgings shall be machined perpendicular to the axis of the forging for the axial examination. Faces of disk and rectangular forgings shall be machined flat and parallel to one another. The procedures to be performed are as follows: ultrasonic examination of the forgings; straight-beam examination with establishment of the instrument sensitivity and calibration either by the reflection, reference-block technique, or DGS method; and angle-beam examination used for rings and hollow forgings.
SIGNIFICANCE AND USE
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.  
4.2 The ultrasonic quality level shall be clearly stated as order requirements.
SCOPE
1.1 This practice2 covers the examination procedures for the contact, pulse-echo ultrasonic examination of steel forgings by the straight and angle-beam techniques. The straight beam techniques include utilization of the DGS (Distance Gain-Size) method. See Appendix X3.  
1.2 This practice is to be used whenever the inquiry, contract, order, or specification states that forgings are to be subject to ultrasonic examination in accordance with Practice A388/A388M.  
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.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.5 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.  
1.6 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 and determine the applicability of regulatory limitations prior to use.  
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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ASTM
ASTM A336/A336M-23(Specification)
Standard Specification for Alloy Steel Forgings for Pressure and High-Temperature Parts

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.
SCOPE
1.1 This specification2 covers ferritic steel forgings for boilers, pressure vessels, high-temperature parts, and associated equipment.  
1.2 Forgings made of steel grades listed in Specification A335/A335M may also be ordered under this specification. The chemical, tensile, heat treatment, and marking requirements of Specification A335/A335M shall apply, except the forging shall conform to the chemical requirements of Tables 1 and 2 of Specification A335/A335M only with respect to heat analysis. On product analysis they may deviate from these limits to the extent permitted in Table 1 of this specification.  
1.3 Supplementary Requirements S1 to S10 are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.  
1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.  
1.5 Specification A336/A336M formerly included austenitic steel forgings, which are now found in Specification A965/A965M.  
1.6 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.  
1.7 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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ASTM
ASTM A472/A472M-23(Specification)
Standard Specification for Heat Stability of Steam Turbine Shafts and Rotor Forgings

ABSTRACT
This measurement method covers the procedures for the standard practice of determining the heat stability of steam turbine and rotor forgings to ensure stability at operating temperature. Surface and test band preparation, and heating and cooling procedures prior to stability measurements are detailed. Interpretation of the results of cold and hot measurements is also described.
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.  
1.4 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 and determine the applicability of regulatory limitations prior to use.  
1.5 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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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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