ASTM A693-93(1999)

Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

SCOPE
1.1 This specification 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.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 77.140.20 - Stainless steels
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.17 - Flat-Rolled and Wrought Stainless Steel

Relations

• Replaced By: ASTM A693-01 - Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
• Effective Date: 10-Mar-2002
• Referred By: ASTM F1511-18(2023) - Standard Specification for Mechanical Seals for Shipboard Pump Applications
• Effective Date: 10-Mar-2002
• Referred By: ASTM A480/A480M-23a - Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
• Effective Date: 10-Mar-2002
• Referred By: ASTM B906-22 - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 10-Mar-2002
• Referred By: ASTM F1611-20 - Standard Specification for Intramedullary Reamers
• Effective Date: 10-Mar-2002

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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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 693 – 93 (Reapproved 1999)
Standard Specification for
Precipitation-Hardening Stainless and Heat-Resisting Steel
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 3.1.1 Definitions,
3.1.2 General requirements for delivery.
1.1 This specification covers precipitation-hardening stain-
3.1.3 Ordering Information:
less steel plate, sheet, and strip. The mechanical properties of
3.1.3.1 In addition to the requirements of A 480/A 480M,
these steels are developed by suitable low-temperature heat
the heat treatment (see Section 6) must be specified on the
treatments generally referred to as precipitation hardening.
purchase order.
1.2 These steels are used for parts requiring corrosion
resistance and high strength at room temperature or at tem-
4. Materials and Manufacture
peratures up to 600°F (315°C). Some of these steels are
4.1 The steel shall be melted by one of the following
particularly suitable for moderate to severe drawing and
processes:
forming in the solution-treated condition. Others are capable of
4.1.1 Electric furnace (with separate degassing and refining
mild forming only. They are suitable for machining in the
optional),
solution-annealed condition, after which they may be hardened
4.1.2 Vacuum furnace, and
to the mechanical properties specified in this standard without
4.1.3 One of the former followed by:
danger of cracking or distortion.
4.1.3.1 Consumable remelting in vacuum, inert gas, or
1.3 The values stated in inch-pound units are to be regarded
electroslag, or
as the standard.
4.1.3.2 Electron beam refining.
2. Referenced Documents 4.1.4 Other commercial melting methods as agreed upon
between purchaser and seller are acceptable.
2.1 ASTM Standards:
A 480/A 480M Specification for General Requirements for
5. Chemical Composition
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
3 5.1 The steel shall conform to the requirements as to
Sheet, and Strip
chemical composition specified in Table 1, and shall conform
E 527 Practice for Numbering Metals and Alloys (UNS)
to applicable requirements specified in the current edition of
2.2 SAE Standard:
Specification A 480/A 480M.
SAE J 1086 Recommended Practice for Numbering Metals
and Alloys (UNS)
6. Heat Treatment of Product
6.1 Material shall be furnished in the solution-annealed
3. General Requirements
condition as noted in Table 2 and Table 3 unless otherwise
3.1 The following requirements for orders for material
specified by the purchaser on the purchase order.
furnished under this specification shall conform to the appli-
cable requirements of the current edition of Specification
7. Mechanical Properties
A 480/A 480M or as specified in the following:
7.1 The material, as represented by mechanical test speci-
mens, shall conform to the mechanical property requirements
specified in Table 4 and shall be capable of developing the
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee
properties in Table 5 when heat treated as specified in 9.1.
A01.17 on Flat Stainless Steel Products.
Current edition approved July 15, 1993. Published September 1993. Originally
8. Bending Requirements
published as A 693 – 74. Last previous edition A 693 – 92a.
For ASME Boiler and Pressure Vessel Code applications see related Specifi- 8.1 Samples cut from the solution-annealed plate, sheet, or
cation SA-693 in Section II of that Code.
strip shall withstand cold bending as specified in Table 6
Annual Book of ASTM Standards, Vol 01.03.
without cracking on the outside of the bent portion.
Annual Book of ASTM Standards, Vol 01.01.
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
A 693
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 15.00–17.50 3.00–5.00 . . . 3.00–5.00
S 17700 631 0.09 1.00 0.040 0.030 1.00 16.00–18.00 6.50–7.75 0.75–1.50 . . . .
S 15700 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 . . .
E
S 35000 633 0.07–0.11 0.50–1.25 0.040 0.030 0.50 16.00–17.00 4.00–5.00 . 2.50–3.25 . .
F
S 35500 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 . .
S 17600 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 . .
S 36200 XM-9 0.05 0.50 0.030 0.030 0.30 14.00–14.50 6.25–7.00 0.10 0.30 0.60–0.90 . .
D
S 15500 XM-12 0.07 1.00 0.040 0.030 1.00 14.00–15.50 3.50–5.50 . . . 2.50–4.50
G
S 13800 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
S 45500 XM-16 0.05 0.50 0.040 0.030 0.50 11.00–12.50 7.50–9.50 . 0.50 0.80–1.40 1.50–2.50
H
S 45000 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 SAE J1086.
C
The terms Columbium (Cb) and Niobium (Nb) both relate to the same element.
D
Columbium plus tantalum 0.15–0.45.
E
Nitrogen 0.07–0.13.
F
Columbium plus tantalum 0.10–0.50.
G
Nitrogen 0.01.
H
Columbium 8 times carbon minimum.
TABLE 2 Heat Treatment, °F
UNS
A
Desig- Type Solution Treatment Precipitation Hardening Treatment
nation
S17400 630 1925 6 50°F (cool as required) 900 6 15°F, 1 h, air cool.
925 6 15°F, 4 h, air cool.
1025 6 15°F, 4 h, air cool.
1075 6 15°F, 4 h, air cool.
1100 6 15°F, 4 h, air cool.
1150 6 15°F, 4 h, air cool.
(1400 6 15°F, 2 h, air cool + 1150 6 15°F, 4 h, air cool).
S17700 631 1950 6 25°F (cool as required) 1750 6 15°F, hold 10 min, cool rapidly to room temperature. Cool
within 24 h, to −100 6 10°F, hold not less than 8 h. Warm in air to
room temperature. Heat to 950 6 10°F, hold 1 h, air cool.
Alternative Treatment:
1400 6 25°F, hold 90 min, cool to 55 6 5°F within 1 h.
Hold not less than 30 min, heat to 1050 6 10°F, hold for
90 min, air cool.
S15700 632 1950 6 25°F (cool as required) Same as Type 631
S35000 633 1710 6 25°F (water quench), hold not less than3hat 850 6 15°F, 3 h, air cool.
−100°F or lower. 1000 6 15°F, 3 h, air cool.
B
S35500 634 1900 6 25°F (quench), hold not less than3hat −100°F or 1750 −10°F for not less than 10 min, but not more than 1 h, water
lower. quench. Cool to not higher than −100°F, hold for not less than 3 h.
Temper at 1000 6 25°F, holding for not less than 3 h.
S17600 635 1900 6 25°F (air cool) 950 6 15°F, 30 min, air cool.
1000 6 15°F, 30 min, air cool.
1050 6 15°F, 30 min, air cool.
S36200 XM-9 1550 6 25°F (air cool) 900 6 10°F, 8 h, air cool.
S15500 XM-12 1900 6 25°F (cool as required) Same as Type 630
S13800 XM-13 1700 6 25°F (cool as required to below 60°F) 950 6 10°F, 4 h, air cool.
1000 6 10°F, 4 h, air cool.
S45500 XM-16 1525 6 25°F (water quench) 900 6 10°F, 4 h, air cool. or 950 6 10°F, 4 h, air cool.
S45000 XM-25 1900 6 25°F (cool rapidly) 900 6 15°F, 4 h, air cool.
1000 6 15°F, 4 h, air cool.
1150 6 15°F, 4 h, air cool.
A
Times refer to time material is at temperature.
B
Equalization and over-tempering treatment: 1425 6 50°F for not less than 3 h, cool to room temperature, heat to 1075 6 25°F for not less than 3 h.
A 693
TABLE 3 Heat Treatment, °C
UNS
A
Type Solution Treatment Precipitation Hardening Treatment
Designation
S17400 630 1050 6 25°C (cool as required) 482 6 8°C, 1 h, air cool.
496 6 8°C, 4 h, air cool.
552 6 8°C, 4 h, air cool.
579 6 8°C, 4 h, air cool.
593 6 8°C, 4 h, air cool.
621 6 8°C, 4 h, air cool.
(760 6 8°C, 2 h, air cool + 621 6 8°C, 4 h, air cool).
S17700 631 1065 6 15°C (water quench) 954 6 8°C, hold 10 min, cool rapidly to room temperature. Cool within
24 h to −73°C 6 6°C, hold not less than 8 h. Warm in air to room
temperature. Heat to 510 6 6°C, hold 1 h, air cool.
Alternative Treatment
760 6 15°C, hold 90 min, cool to 15 6 3°C within 1 h.
Hold not less than 30 min, heat to 566 6 6°C, hold for
90 min, air cool.
S15700 632 1038 6 15°C (water quench) Same as Type 631
S35000 633 930 6 15°C (water quench), hold not less than3hat 455 6 8°C, 3 h, air cool.
−75°C or lower. 540 6 8°C, 3 h, air cool.
B
S35500 634 1038 6 15°C (quench), hold not less than3hat −73°C 954 6 6°C for not less than 10 min, but not more than 1 h, water
or lower. quench. Cool to not higher than −73°C, hold for not less than 3 h.
Temper at 538 6 15°C, holding for not less than 3 h.
S17600 635 1038 6 15°C (air cool) 510 6 8°C, 30 min, air cool.
538 6 8°C, 30 min, air cool.
566 6 8°C, 30 min, air cool.
S36200 XM-9 843 6 15°C (air cool) 482 6 8°C, 8 h, air cool.
S15500 XM-12 1038 6 15°C (cool as required) Same as Type 630
S13800 XM-13 927 6 15°C (cool as required to below 60°C) 510 6 6°C, 4 h, air cool.
538 6 6°C, 4 h, air cool.
S45500 XM-16 829 6 15°C (water quench) 482 6 6°C, 4 h, air cool. or 510 6 6°C, 4 h, air cool.
S45000 XM-25 1038 6 15°C (cool rapidly) 482 6 8°C, 4 h, air cool.
538 6 8°C, 4 h, air cool.
621 6 8°C, 4 h, air cool.
A
Times refer to time material is at temperature.
B
Equalization and over-tempering treatment: 774 6 25°C for not less than 3 h, cool to room temperature, heat to 579 6 15°C for not less than 3 h.
TABLE 4 Mechanical Test Requirements in Solution-Treated Condition
Elongation in
Tensile Strength, max Yield Strength, max Hardness, max
Type 2 in. or 50 mm,
ksi MPa ksi MPa Rockwell Brinell
min, %
630 0.015 to 4.0 in. (0.38 to 102 mm) 185 1255 160 1105 3 C38 363
631 0.010 in. (0.25 mm) and under 150 1035 65 450 . . .
Over 0.010 to 4.0 in. (0.25 to 102 mm) 150 1035 55 380 20 B92 .
632 0.0015 to 4.0 in. (0.038 to 102 mm) 150 1035 65 450 25 B100 . . .
633 0.001 to 0.0015 in. (0.03 to 0.038 mm), excl 200 1380 90 620 8 C30 . . .
0.0015 to 0.002 in. (0.03 to 0.05 mm), excl 200 1380 88 605 8 C30 . . .
0.002 to 0.005 in. (0.05 to 0.13 mm), excl 200 1380 86
...