ASTM A487/A487M-93(1998)

Standard Specification for Steel Castings Suitable for Pressure Service

SCOPE
1.1 This specification  covers low-alloy steels and martensitic stainless steels in the normalized and tempered, or quenched and tempered, condition suitable for pressure-containing parts. The weldability of the classes in this specification varies from readily weldable to weldable only with adequate precautions, and the weldability of each class should be considered prior to assembly by fusion welding.  
1.2 Selection will depend on design, mechanical, and service conditions. Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtained.  
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 A487 and SI units for material ordered to Specification A487M.

General Information

• Status: Historical
• Publication Date: 09-May-1998
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaced By: ASTM A487/A487M-93(2003) - Standard Specification for Steel Castings Suitable for Pressure Service
• Effective Date: 10-Apr-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 487/A 487M – 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 Suitable for Pressure Service
This standard is issued under the fixed designation A 487/A 487M; 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 2.3 Manufacturers Standardization Society of the Valve and
Fittings Industry Standards:
1.1 This specification covers low-alloy steels and marten-
SP-55 Quality Standard for Steel Castings-Visual Method
sitic stainless steels in the normalized and tempered, or
quenched and tempered, condition suitable for pressure-
3. General Conditions for Delivery
containing parts. The weldability of the classes in this speci-
3.1 Material furnished to this specification shall conform to
fication varies from readily weldable to weldable only with
the requirements of Specification A 703/A 703M including any
adequate precautions, and the weldability of each class should
supplementary requirements that are indicated in the purchase
be considered prior to assembly by fusion welding.
order. Failure to comply with the general requirements of
1.2 Selection will depend on design, mechanical, and ser-
Specification A 703/A 703M constitutes nonconformance with
vice conditions. Users should note that hardenability of some
this specification. In case of conflict between the requirements
of the grades mentioned may restrict the maximum size at
of this specification and Specification A 703/A 703M, this
which the required mechanical properties are obtained.
specification shall prevail.
1.3 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
4. Ordering Information
SI units are shown in brackets. The values stated in each
4.1 The inquiry and order should include or indicate the
system are not exact equivalents; therefore, each system must
following:
be used independently of the other. Combining values from the
4.1.1 A description of the casting by pattern number or
two systems may result in nonconformance with the specifi-
drawing (dimensional tolerances shall be included on the
cation. Inch-pound units are applicable for material ordered to
casting drawing),
Specification A 487 and SI units for material ordered to
4.1.2 ASTM designation and year of issue,
Specification A 487M.
4.1.3 Grade and class of steel,
2. Referenced Documents 4.1.4 Options in the specification, and
4.1.5 The supplementary requirements desired including the
2.1 ASTM Standards:
standard of acceptance.
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
5. Heat Treatment
A 488/A 488M Practice for Steel Castings, Welding, Quali-
4 5.1 All castings shall receive a heat treatment indicated in
fications of Procedures and Personnel
Table 1. Preliminary heat treatment prior to final heat treatment
A 703/A 703M Specification for Steel Castings, General
as well as multiple tempering is permitted.
Requirements, for Pressure-Containing Parts
5 5.2 Heat treatment shall be performed after the castings
E 165 Test Method for Liquid Penetrant Examination
have been allowed to cool below the transformation range.
E 709 Guide for Magnetic Particle Examination
5.3 The furnace temperature for heat treating shall be
2.2 American Society of Mechanical Engineers:
effectively controlled by use of recording-type pyrometers.
ASME Boiler and Pressure Vessel Code, Section IX
6. Chemical Composition
6.1 The steel shall conform to the requirements as to
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
chemical composition prescribed in Table 2. Product analysis
Stainless Steel, and Related Alloysand is the direct responsibility of Subcommittee
A01.18 on Castings. tolerance shall conform to the product analysis tolerance
Current edition approved Dec. 15, 1993. Published April 1994. Originally
shown in Specification A 703/A 703M. Product analysis toler-
published as A 487 – 63T. Last previous edition A 487/A 487M – 91.
ances for stainless grades are not presently applicable pending
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
development of these limits.
cations SA-487 in Section II of that code.
Annual Book of ASTM Standards, Vol 01.03.
Annual Book of ASTM Standards, Vol 01.02.
Annual Book of ASTM Standards, Vol 03.03.
6 7
Available from American Society of Mechanical Engineers, 345 E. 47th St., Available from Manufacturer’s Standardization Society of the Valve and
New York, NY 10017. Fittings Industry, 127 Park St., N.E. Vienna, VA 22180.
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 487/A 487M
TABLE 1 Heat Treat Requirement
Austenitizing Tempering
Quenching Cool
A
Grade Class Temperature, Media Temperature,
Below °F [°C]
B
min, °F [°C] °F [°C]
1 A 1600 [870] A 450 [230] 1100 [595]
1 B 1600 [870] L 500 [260] 1100 [595]
1 C 1600 [870] A or L 500 [260] 1150 [620]
2 A 1600 [870] A 450 [230] 1100 [595]
2 B 1600 [870] L 500 [260] 1100 [595]
2 C 1600 [870] A or L 500 [260] 1150 [620]
4 A 1600 [870] A or L 500 [260] 1100 [595]
4 B 1600 [870] L 500 [260] 1100 [595]
4 C 1600 [870] A or L 500 [260] 1150 [620]
4 D 1600 [870] L 500 [260] 1150 [620]
4 E 1600 [870] L 500 [260] 1100 [595]
6 A 1550 [845] A 500 [260] 1100 [595]
6 B 1550 [845] L 500 [260] 1100 [595]
7 A 1650 [900] L 600 [315] 1100 [595]
8 A 1750 [955] A 500 [260] 1250 [675]
8 B 1750 [955] L 500 [260] 1250 [675]
8 C 1750 [955] L 500 [260] 1250 [675]
9 A 1600 [870] A or L 500 [260] 1100 [595]
9 B 1600 [870] L 500 [260] 1100 [595]
9 C 1600 [870] A or L 500 [260] 1150 [620]
9 D 1600 [870] L 500 [260] 1150 [620]
9 E 1600 [870] L 500 [260] 1100 [595]
10 A 1550 [845] A 500 [260] 1100 [595]
10 B 1550 [845] L 500 [260] 1100 [595]
11 A 1650 [900] A 600 [315] 1100 [595]
11 B 1650 [900] L 600 [315] 1100 [595]
12 A 1750 [955] A 600 [315] 1100 [595]
12 B 1750 [955] L 400 [205] 1100 [595]
13 A 1550 [845] A 500 [260] 1100 [595]
13 B 1550 [845] L 500 [260] 1100 [595]
14 A 1550 [845] L 500 [260] 1100 [595]
C
16 (J31200) A 1600 [870] A 600 [315] 1100 [595]
CA15 A 1750 [955] A or L 400 [205] 900 [480]
CA15 B 1750 [955] A or L 400 [205] 1100 [595]
DE
CA15 C 1750 [955] A or L 400 [205] 1150 [620]
DE
CA15 D 1750 [955] A or L 400 [205] 1150 [260]
CA15M A 1750 [955] A or L 400 [205] 1100 [595]
CA6NM A 1850 [1010] A or L 200 [95] 1050–1150 [565–620]
E,F
CA6NM B 1850 [1010] A or L 200 [95] 1225–1275 [665–690]
G
1050–1150 [565–620]
A
A 5 air, L 5 Liquid.
B
Minimum temperature unless range is specified.
C
Double austenitize.
D
Double temper with the final temper at a lower temperature than the intermediate temper.
E
Air cool to below 200°F [95°C] after first temper.
F
Intermediate.
G
Final.
7. Tensile Requirements 9. Repair By Welding
7.1 Tensile properties of steel used for the castings shall
9.1 For castings, other than those intended for use under
conform to the requirements prescribed in Table 3.
ASME Boiler and Pressure Vessel Code, repairs shall be made
using procedures and welders qualified under Practice A 488/
8. Quality
A 488M.
8.1 The surface of the casting shall be free of adhering sand,
9.2 On castings intended for use under the ASME Boiler
scale, cracks, and hot tears as determined by visual examina-
and Pressure Vessel Code, repairs shall be made by procedures
tion. Other surface discontinuities shall meet the visual accep-
and welders qualified under Section IX of that code.
tance standards specified in the order. Visual Method SP-55 or
9.3 After repair welding, all castings shall be postweld heat
other visual standards may be used to define acceptable surface
treated in accordance with Table 4 or reheat treated in
discontinuities and finish. Unacceptable visual surface discon-
accordance with Table 1.
tinuities shall be removed and their removal verified by visual
examination of the resultant cavities. When methods involving 9.4 Weld repairs shall be inspected using the same quality
high temperatures are used in the removal and repair of standards as are used to inspect the castings. Re–examination
discontinuities, the casting shall be preheated to at least the of the weld repair by radiography when Supplementary Re-
minimum temperature in Table 4. quirement S 5 has been specified will not be necessary when an
8.2 The castings shall not be peened, plugged, or impreg- applicable surface inspection method was used to locate the
nated to stop leaks. discontinuity except for the following:
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 487/A 487M
TABLE 2 Chemical Requirements (Maximum Percent Unless Range is Given)
Grade 1. 2. 4. 6. 7. 8. 9. 10. 11. 12.
AB A AB
ABC ABCDE ABC ABCDE AB AB
Manganese Nickel- Nickel-
Class ABC Manganese- Nickel- Chromium- Chromium- Nickel- Nickel-
Nickel- Chromium- Chromium-
Type Vanadium Molyb- Chromium- Molyb- Molyb- Chromium- Chromium-
Chromium- Molybdenum- Molybde-
denum Molybdenum denum denum Molybdenum Molybdenum
A
Molybdenum Vanadium num
Carbon 0.30 0.30 0.30 0.05–0.38 0.05–0.20 0.05–0.20 0.05–0.33 0.30 0.05–0.20 0.05–0.20
Manganese 1.00 1.00–1.40 1.00 1.30–1.70 0.60–1.00 0.50–0.90 0.60–1.00 0.60 to 1.00 0.50–0.80 0.40–0.70
Phosphorus 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04
Sulfur 0.045 0.045 0.045 0.045 0
...