ASTM-B637 › Historical Revision Information
Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service

ASTM-B637 - 2012 EDITION - SUPERSEDED
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This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for high-temperature service. Chemical analysis shall be performed on the alloy and shall conform to the chemical composition requirement in carbon, manganese, silicon, phosphorus, sulfur, chromium, cobalt, molybdenum, columbium, tantalum, titanium, aluminum, zirconium, boron, iron, copper, and nickel. The material shall follow recommended annealing treatment, solution treatment, stabilizing treatment, and precipitation hardening treatment. Tension testing, hardness testing and stress-rupture testing shall be performed on the material and shall comply to the required tensile strength, yield strength, elongation, reduction in area, and Brinell hardness.

ORDER

Scope

1.1 This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for moderate or high temperature service (Table 1).

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 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

TABLE 1 Chemical Requirements

ElementComposition Limits, %
UNS N07022UNS N07208UNS N07252
(Formerly
Grade 689)		UNS N07001
(Formerly
Grade 685)		UNS N07500
(Formerly
Grade 684)		UNS N07750
(Formerly
Grade 688)		UNS N07718
(Formerly
Grade 718)
Carbon0.010 max0.04–0.080.10–0.200.03–0.100.15 max0.08 max0.08 max
Manganese0.5 max0.3 max0.50 max1.00 max0.75 max1.00 max0.35 max
Silicon0.08 max0.15 max0.50 max0.75 max0.75 max0.50 max0.35 max
Phosphorus0.025 max0.015 max0.015 max0.030 max0.015 max...0.015 max
Sulfur0.015 max0.015 max0.015 max0.030 max0.015 max0.01 max0.015 max
Chromium20.0–21.418.5–20.518.00–20.0018.00–21.0015.00–20.0014.00–17.0017.0–21.0
Cobalt1.0 max9.0–11.09.00–11.0012.00–15.0013.00–20.001.00 maxA1.0 maxA
Molybdenum15.5–17.48.0–9.09.00–10.503.50–5.003.00–5.00...2.80–3.30
Columbium
(Nb) + tantalum		...............0.70–1.204.75–5.50
Titanium...1.90–2.302.25–2.752.75–3.252.50–3.252.25–2.750.65–1.15
Aluminum0.5 max1.38–1.650.75–1.251.20–1.602.50–3.250.40–1.000.20–0.80
Zirconium...0.020 max...0.02–0.12.........
Boron0.006 max0.003–0.0100.003–0.010.003–0.010.003–0.01...0.006 max
Iron1.8 max1.5 max5.00 max2.00 max4.00 max5.00–9.00remainderB
Copper0.5 max0.1 max...0.50 max0.15 max0.50 max0.30 max
NickelremainderBremainderBremainderBremainderBremainderB70.00 min50.0–55.0
Tantalum0.2 max0.1 max...............
Columbium (Niobium)...0.2 max...............
Tungsten0.8 max0.5 max...............
UNS N07080
(Formerly
Grade 80A)		UNS N07752UNS N09925UNS N07725
Carbon0.10 max0.020–0.0600.03 max0.03 max
Manganese1.00 max1.00 max1.0 max0.35 max
Silicon1.00 max0.50 max0.5 max0.20 max
Phosphorus ...0.008 max0.03 max0.015 max
Sulfur0.015 max0.003 max0.03 max0.010 max
Chromium18.00–21.0014.50–17.0019.5–22.5†19.00–22.50†
Cobalt...0.050 max......
Molybdenum......2.5–3.57.00–9.50
Columbium
(Nb) + tantalum		...0.70–1.200.5 max (Nb only)2.75–4.00
Titanium1.80–2.702.25–2.751.9–2.401.00–1.70
Aluminum0.50–1.800.40–1.000.1–0.50.35 max
Boron...0.007 max......
Iron3.00 max5.00–9.0022.0 minremainderB
Copper...0.50 max1.5–3.0...
Zirconium...0.050 max......
Vanadium...70.0 min......
NickelremainderB70.0 min42.0–46.055.0–59.0

A If determined.

B The element shall be determined arithmetically by difference.

† Chromium content was corrected editorially.

Keywords

bar; billet; forging; N07001; N07022; N07208; N07080; N07252; N07500; N07718; N07725; N07750; N07752; N09925; Bars/forging/forging stock--specifications; Forgings--specifications; High-temperature service applications--nickel (specifications); Incoloy/Inconel; Nickel alloy forgings--specifications; Nickel alloy rod/bar/wire--specifications; Nimonic 80A alloy; Precipitation-hardening nickel alloy--specifications; Udimet alloy; UNS N07001 (Ni-Cr alloy, Waspaloy); UNS N07080 (Ni-Cr alloy, Nimonic 80A); UNS N07252 (Ni-Cr alloy, M252); UNS N07500 (Ni-Cr alloy, Udimet 500); UNS N07718 (Ni-Cr alloy, Inconel 718); UNS N07750 (Ni-Cr alloy, Inconel X750); ICS Number Code 9925; 77.150.40 (Nickel and chromium products)

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

77.150.40 (Nickel and chromium products)

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Document Number

ASTM-B637-12

Revision Level

2012 EDITION

Status

Superseded

Modification Type

Revision with Title Change

Publication Date

May 31, 2012

Document Type

Specification

Page Count

7 pages

Committee Number

B02.07