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ASTM B572

This specification covers alloys UNS N06002, UNS N06230, UNS N12160, and UNS R30556 in the form of rod for heat resisting and general-corrosive service. The following products are covered under this specification: Rods 5⁄16 to 3⁄4 in. (7.94 to 19.05 mm) exclusive in diameter, hot or cold finished, solution-annealed, and pickled or mechanically descaled. Rods 3⁄4 to 31⁄2 in. (19.05 to 88.9 mm) inclusive in diameter, hot or cold finished, solution annealed, ground, or turned. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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Parameter Description

Chemical Composition

Element

Composition Limits, %

UNS N06002

UNS N06230

UNS N12160

UNS R30556

Nickel

remainderA

remainderA

remainderA

19.0-22.5

Iron

17.0-20.0

3.0 max

3.5 max

remainderA

Chromium

20.5-23.0

20.0-24.0

26.0 30.0

21.0-23.0

Cobalt

0.5-2.5

5.0 max

27.0-33.0

16.0-21.0

Molybdenum

8.0-10.0

1.0-3.00

1.0 max

2.5-4.0

Tungsten

0.2-1.0

13.0-15.0

1.0 max

2.0-3.5

Carbon

0.05-0.15

0.05-0.15

0.15 max

0.05-0.15

Silicon

1.00 max

0.25-0.75

2.4 3.0

0.20-0.80

Manganese

1.00 max

0.30-1.00

1.5 max

0.50-2.00

Phosphorus

0.04

0.030 max

0.030 max

0.04 max

Sulfur

0.03

0.015 max

0.015 max

0.015 max

Columbium

...

...

1.0 max

0.30 max

Tantalum

...

...

...

0.30-1.25

Aluminum

...

0.50 max

...

0.10-0.50

Zirconium

...

...

...

0.001-0.10

Lanthanum

...

0.005--0.050

...

0.005-0.10

Nrogen

...

...

...

0.10-0.30

Boron

...

0.015 max

...

0.02 max

Titanium

...

...

0.20-0.80

...

Note:

A. Chemical Analysis—Test Methods E 1473. For elements not covered by Test Methods E 1473, the referee method shall be as agreed upon between the manufacturer and the purchaser. The composition of the remainder element shall be determined arithmetically by difference.

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Mechanical Properties

UNS

Tensile Strength, min, ksi (MPA)

Yield Strength (0.2 % Offset), min, ksi (MPa)

Elongation in 2 in. (50.8mm) or 4DA min, %

N06002

95 (660)

35 (240)

35

N06230B

110 (760)

45 (310)

40

N12160C

90 (620)

35 (240)

40

R30556D

100 (690)

45 (310)

40

Note:

A. D refers to the diameter of the tension specimen.
B. Solution annealed at a temperature between 2200 to 2275°F (1204 to 1246°C) followed by a water quench or rapidly cooled by other means.
C. Solution annealed at 1950°F (1065°C) minimum.
D. Solution annealed at 2100°F (1150°C) minimum.