ASTM B574 Specification

This specification2 covers rod of low-carbon nickelchromium-molybdenum alloys (UNS N10276, N06022, N06035, N06455, N06058, and N06059)*, low-carbon nickelmolybdenum-chromium-tantalum (UNS N06210), low-carbon nickel-chromium-molybdenum-copper alloy (UNS N06200), and low-carbon nickel-chromium-molybdenum-tungsten (UNS N06686) as shown in Table 1, for use in 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. Rods 1⁄4 to 3 1⁄2 in. (6.35 to 88.9 mm), inclusive, in diameter, solution annealed, cold finished, as cold finished, ground or turned (N06059 and N06686 only, see Table 2 and Table 3).

Chemical Composition

Element Composition Limits, %
Alloy N06035 Alloy N10276 Alloy N06022 Alloy N06455 Alloy N06059 Alloy N06058 Alloy N06200 Alloy N06210 Alloy N06686
Molybdenum 7.60-9.00 15.0-17.0 12.5-14.5 14.0-17.0 15.0-16.5 19.0 - 21.0 15.0-17.0 18.0-20.0 15.0- 17.0
Chromium 32.25-34.25 14.5-16.5 20.0-22.5 14.0-18.0 22.0-24.0 20.0- 23.0 22.0-24.0 18.0-20.0 19.0-23.0
Iron 2.00, max 4.0-7.0 2.0-6.0 3.0, max 1.5, max 1.5, max 3.0, max 1.0, max 5.0, max
Tungsten 0.60, max 3.0-4.5 2.5-3.5 ... ... 0.3 max ... ... 3.0-4.4
Cobalt, max 1.00 2.5 2.5 2.0 0.3 0.3 max 2.0 max 1.0 ...
Carbon, max 0.050 0.010 0.015 0.015 0.010 0.010 0.010 0.015 0.010
Silicon,max 0.60 0.08 0.08 0.08 0.10 0.10 0.08 0.08 0.08
Manganese,max 0.50 1.0 0.50 1.0 0.5 0.5 0.5 0.5 0.75
Vanadium,max 0.20 0.35 0.35 ... ... ... ... 0.35 ...
Phosphorus,max 0.030 0.04 0.02 0.04 0.015 0.015 0.025 0.02 0.04
Sulfur,max 0.015 0.03 0.02 0.03 0.010 0.010 0.010 0.02 0.02
Titanium ... ... ... 0.7 max ... ... ... ... 0.02-0.25
Nickel remainderA remainderA remainderA remainderA Bal Bal remainderA remainderA remainderA
Aluminum 0.40 max ... ... ... 0.1-0.4 0.40 max 0.50 max ... ...
Copper 0.30 max ... ... ... 0.50 max 0.50 max 1.3-1.9 ... ...
Tantalum ... ... ... ... ... ... ... 1.5-2 2 ...
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 nickel composition shall be determined arithmetically by difference.

Mechanical Properties for As Cold Finished Rods

Alloy Grade Tensile Strength, min, psi (MPa) Yield Strength (0.2 % Offset), min, psi (MPa) Elongation in 2 in. (50.8 mm) or 4DA min, %
N06059 1 120 (827) 85 (586) 20
  2 135 (931) 125 (862) 20
  3 160 (1103) 150 (1034) 15
N06686 1 120 (827) 85 (586) 20
  2 135 (931) 125 (862) 20
  3 160 (1103) 150 (1034) 20
Note:

A. D refers to the diameter of the tension specimen.

Mechanical Properties for Hot or Cold Finished, Solution Annealed Rods

Alloy Tensile Strength, min, psi (MPa) Yield Strength (0.2 % Offset), min, psi (MPa) Elongation in 2 in. (50.8 mm) or 4DA min, %
N10276 100 000 (690) 41 000 (283) 40
N06022 100 000 (690) 45 000 (310) 45
N06035 85 000 (586) 35 000 (241) 30
N06455 100 000 (690) 40 000 (276) 40
N06058 110 000 (760) 52 000 (360) 40
N06059 100 000 (690) 45 000 (310) 45
N06200 100 000 (690) 45 000 (310) 45
N06686 100 000 (690) 45 000 (310) 45
N06210 100 000 (690) 45 000 (310) 45
Note:

A. D refers to the diameter of the tension specimen.