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  • ASTM
    B637-12e1 Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service
    Edition: 2012
    $103.58
    Unlimited Users per year

Description of ASTM-B637 2012

ASTM B637-12e1

Historical Standard: Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service




ASTM B637

Scope

1.1 This specification2 covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for moderate or high temperature service (Table 1).

TABLE 1 Chemical Requirements

 

Element

Composition Limits, %

 

UNS N07022

UNS N07208

UNS N07252
(Formerly
Grade 689)

UNS N07001
(Formerly
Grade 685)

UNS N07500
(Formerly
Grade 684)

UNS N07750
(Formerly
Grade 688)

UNS N07718
(Formerly
Grade 718)

Carbon

0.010 max

0.04–0.08

0.10–0.20

0.03–0.10

0.15 max

0.08 max

0.08 max

Manganese

0.5 max

0.3 max

0.50 max

1.00 max

0.75 max

1.00 max

0.35 max

Silicon

0.08 max

0.15 max

0.50 max

0.75 max

0.75 max

0.50 max

0.35 max

Phosphorus

0.025 max

0.015 max

0.015 max

0.030 max

0.015 max

...

0.015 max

Sulfur

0.015 max

0.015 max

0.015 max

0.030 max

0.015 max

0.01 max

0.015 max

Chromium

20.0–21.4

18.5–20.5

18.00–20.00

18.00–21.00

15.00–20.00

14.00–17.00

17.0–21.0

Cobalt

1.0 max

9.0–11.0

9.00–11.00

12.00–15.00

13.00–20.00

1.00 maxA

1.0 maxA

Molybdenum

15.5–17.4

8.0–9.0

9.00–10.50

3.50–5.00

3.00–5.00

...

2.80–3.30

Columbium
 (Nb) + tantalum

...

...

...

...

...

0.70–1.20

4.75–5.50

Titanium

...

1.90–2.30

2.25–2.75

2.75–3.25

2.50–3.25

2.25–2.75

0.65–1.15

Aluminum

0.5 max

1.38–1.65

0.75–1.25

1.20–1.60

2.50–3.25

0.40–1.00

0.20–0.80

Zirconium

...

0.020 max

...

0.02–0.12

...

...

...

Boron

0.006 max

0.003–0.010

0.003–0.01

0.003–0.01

0.003–0.01

...

0.006 max

Iron

1.8 max

1.5 max

5.00 max

2.00 max

4.00 max

5.00–9.00

remainderB

Copper

0.5 max

0.1 max

...

0.50 max

0.15 max

0.50 max

0.30 max

Nickel

remainderB

remainderB

remainderB

remainderB

remainderB

70.00 min

50.0–55.0

Tantalum

0.2 max

0.1 max

...

...

...

...

...

Columbium   (Niobium)

...

0.2 max

...

...

...

...

...

Tungsten

0.8 max

0.5 max

...

...

...

...

...

 

UNS N07080
(Formerly
Grade 80A)

UNS N07752

UNS N09925

UNS N07725

 

 

 

Carbon

0.10 max

0.020–0.060

0.03 max

0.03 max

 

 

 

Manganese

1.00 max

1.00 max

1.0 max

0.35 max

 

 

 

Silicon

1.00 max

0.50 max

0.5 max

0.20 max

 

 

 

Phosphorus

  ...

0.008 max

0.03 max

0.015 max

 

 

 

Sulfur

0.015 max

0.003 max

0.03 max

0.010 max

 

 

 

Chromium

18.00–21.00

14.50–17.00

19.5–22.5†

19.00–22.50†

 

 

 

Cobalt

...

0.050 max

...

...

 

 

 

Molybdenum

...

...

2.5–3.5

7.00–9.50

 

 

 

Columbium
 (Nb) + tantalum

...

0.70–1.20

0.5 max (Nb only)

2.75–4.00

 

 

 

Titanium

1.80–2.70

2.25–2.75

1.9–2.40

1.00–1.70

 

 

 

Aluminum

0.50–1.80

0.40–1.00

0.1–0.5

0.35 max

 

 

 

Boron

...

0.007 max

...

...

 

 

 

Iron

3.00 max

5.00–9.00

22.0 min

remainderB

 

 

 

Copper

...

0.50 max

1.5–3.0

...

 

 

 

Zirconium

...

0.050 max

...

...

 

 

 

Vanadium

...

0.10 max†

...

...

 

 

 

Nickel

remainderB

70.0 min

42.0–46.0

55.0–59.0

 

 

 

A If determined.
B The element shall be determined arithmetically by difference.
† Chromium content was corrected editorially.
† Vanadium content was corrected editorially

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.


Keywords

bar; billet; forging; N07001; N07022; N07208; N07080; N07252; N07500; N07718; N07725; N07750; N07752; N09925


ICS Code

ICS Number Code 77.120.40 (Nickel, chromium and their alloys)


DOI: 10.1520/B0637-12E01

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