ASTM A693-03
(Specification)Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
SCOPE
1.1 This specification² covers precipitation-hardening stainless steel plate, sheet, and strip. The mechanical properties of these steels are developed by suitable low-temperature heat treatments generally referred to as precipitation hardening.
1.2 These steels are used for parts requiring corrosion resistance and high strength at room temperature or at temperatures up to 600°F (315°C). Some of these steels are particularly suitable for moderate to severe drawing and forming in the solution-treated condition. Others are capable of mild forming only. They are suitable for machining in the solution-annealed condition, after which they may be hardened to the mechanical properties specified in this standard without danger of cracking or distortion.
1.3 The values stated in inch-pound units are to be regarded as the standard.
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Designation: A 693 – 03
Standard Specification for
Precipitation-Hardening Stainless and Heat-Resisting Steel
1
Plate, Sheet, and Strip
This standard is issued under the fixed designation A 693; 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* cable requirements of the current edition of Specification
2 A 480/A 480M or as specified in the following:
1.1 This specification covers precipitation-hardening stain-
3.1.1 Ordering Information:
less steel plate, sheet, and strip. The mechanical properties of
3.1.1.1 In addition to the requirements of A 480/A 480M,
these steels are developed by suitable low-temperature heat
the heat treatment (see 6) shall be specified on the purchase
treatments generally referred to as precipitation hardening.
order if other than the solution-annealed condition is being
1.2 These steels are used for parts requiring corrosion
ordered.
resistance and high strength at room temperature or at tem-
peratures up to 600°F (315°C). Some of these steels are
4. Materials and Manufacture
particularly suitable for moderate to severe drawing and
4.1 The steel shall be melted by one of the following
forming in the solution-treated condition. Others are capable of
processes:
mild forming only. They are suitable for machining in the
4.1.1 Electric furnace (with separate degassing and refining
solution-annealed condition, after which they may be hardened
optional),
to the mechanical properties specified in this standard without
4.1.2 Vacuum furnace, and
danger of cracking or distortion.
4.1.3 One of the former followed by:
1.3 The values stated in inch-pound units are to be regarded
4.1.3.1 Consumable remelting in vacuum, inert gas, or
as the standard.
electroslag, or
2. Referenced Documents 4.1.3.2 Electron beam refining.
4.1.4 Other commercial melting methods as agreed upon
2.1 ASTM Standards:
between purchaser and seller are acceptable.
A 480/A 480M Specification for General Requirements for
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
5. Chemical Composition
3
Sheet, and Strip
4 5.1 The steel shall conform to the requirements as to
E 527 Practice for Numbering Metals and Alloys (UNS)
chemical composition specified in Table 1, and shall conform
2.2 SAE Standard:
to applicable requirements specified in the current edition of
SAE J 1086 Recommended Practice for Numbering Metals
5 Specification A 480/A 480M.
and Alloys (UNS)
6. Heat Treatment of Product
3. General Requirements
6.1 Material shall be furnished in the solution-annealed
3.1 The following requirements for orders for material
condition as noted in Table 2 and Table 3 unless otherwise
furnished under this specification shall conform to the appli-
specified by the purchaser on the purchase order.
7. Mechanical Properties
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys, and is the direct responsibility of Subcommittee
7.1 The material, as represented by mechanical test speci-
A01.17 on Flat-Rolled and Wrought Stainless Steel.
mens, shall conform to the mechanical property requirements
Current edition approved June 10, 2003. Published July 2003. Originally
e1
specified in Table 4 and shall be capable of developing the
approved in 1974. Last previous edition approved in 2002 as A 693 – 02 .
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- properties in Table 5 when heat treated as specified in 9.1.
cation SA-693 in Section II of that Code.
3
Annual Book of ASTM Standards, Vol 01.03.
4
Annual Book of ASTM Standards, Vol 01.01.
5
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 693–03
8. Bending Requirements
8.1 Samples cut from the solution-annealed plate, sheet, or
strip shall withstand cold bending as specified in Table 6
without cracking on the outside of the bent portion.
9. Heat Treatment of Test Specimens
9.1 Samples cut from the plate, sheet, or strip shall conform
to the mechanical properties of Table 5 when precipitation
hardened as specified in Table 2 and Table 3.
A
TABLE 1 Chemical Requirements
Composition, %
UNS Desig- Manga- Phos- Molyb- Other
Type Carbon Sulfur Silicon Chromium Nickel Aluminum Titanium Copper
B C
nation nese phorus denum Elements
D
S 17400 630 0.07 1.00 0.040 0.030 1.00 15.0–17
...
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