ASTM B166 Specification

Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts

Scope

ASTM B166 specification covers nickel-chromium-iron alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696),* nickel-chromium-cobalt-molybdenum alloy (UNS N06617), and nickel-iron-chromium-tungsten (UNS N06674) alloy in the form of hot-finished and coldworked rounds, squares, hexagons, rectangles, and coldworked wire.

Related Specifications of ASTM B166

ASTM B166 Chemical Composition

Composition Limits, % Element
UNS Ni Cr S Mo Fe Mn Al C Cu Si S Ti P Zr Y B N Nb Ce W
UNS N06600 72.0 min 14.0-17.0 ... ... 6.0-10.0 1.0 max ... 0.15 max 0.5 max 0.5 max 0.015 max ... ... ... ... ... ... ... ... ...
UNS N06601 58.0-63.0 21.0-25.0 ... ... remainderB 1.0 max 1.0-1.7 0.10 max 1.0 max 0.5 max 0.015 max ... ... ... ... ... ... ... ... ...
N06617 44.5 min 20.0-24.0 10.0-15.0 8.0-10.0 3.0 max 1.0 max 0.8-1.5 0.05-0.15 0.5 max 1.0 max 0.015 max 0.6 max ... ... ... 0.006 max ... ... ... ...
UNS N06674 remainderB 21.5-24.5 ... ... 20.0-27.0 1.50 max ... 0.01 max ... 1.0 max 0.015 max 0.05-0.20 0.030 max ... ... 0.0005-0.006 0.02 max 0.10-0.35 ... 6.0-8.0
UNS N06690 58.0 min 27.0-31.0 ... ... 7.0-11.0 0.5 max ... 0.05 max 0.5 max 0.5 max 0.015 max ... ... ... ... ... ... ... ... ...
UNS N06693 remainderB 27.0-31.0   ... 2.5-6.0 1.0 max 2.5-4.0 0.15 max 0.5 max 0.5 max 0.01 max 1.0 max ... ... ... ... ... 0.5-2.5 ... ...
UNS N06025 remainderB 24.0-26.0 ... ... 8.0-11.0 0.15 max 1.8-2.4 0.15-0.25 0.1 max 0.5 max 0.010 max 0.1-0.2 0.020 max 0.01-0.10 0.05-0.12 ... ... ... ... ...
UNS N06045 45.0 min 26.0-29.0 ... ... 21.0-25.0 1.0 max ... 0.05-0.12 0.3 max 2.5-3.0 0.010 max ... 0.020 max ... ... ... ... ... 0.03-0.09 ...
UNS N06603 remainderB 24.0-26.0 ... ... 8.0-11.0 0.15 max 2.4-3.0 0.20-0.40 0.50 max 0.50 max 0.010 max 0.01-0.25 0.20 max 0.01-0.10 0.01-0.15 ... ... ... ... ...
UNS N06696 remainderB 28.0-32.0 ... 1.0-3.0 2.0-6.0 1.0 max ... 0.15 max 1.5-3.0 1.0-2.5 0.010 max 1.0 max ... ... ... ... ... ... ... ...

ASTM B166 Mechanical Requirements

Properties of Rods and Bars

Condition and Diameter
or Distance Between
Parallel Surfaces, in. (mm)
Tensile Strength,
min, psi (MPa)
Yield Strength (0.2 % offset),
min, psi (MPa)
Elongation in
2 in. or 50 mm or
4D, min,%
UNS N06600
Cold-worked (as worked):      
Rounds:      
Under 1⁄2 (12.7) 120000 (825) 90000 (620) 7A
1⁄2 to 1 (12.7 to 25.4), incl 110000 (760) 85000 (585) 10
Over 1 to 21⁄2 (25.4 to 63.5), incl 105000 (725) 80000 (550) 12
Squares, hexagons, and rectangles:      
1⁄4 (6.4) and under 100 95000 (690) 80000 (550) 5A 7
Over 1⁄4 to 1⁄2 (6.4 to 12.7), excl 95000 (655) 70000 (480) 7
Hot worked (as worked):      
Rounds:      
1⁄4 to 1⁄2 (6.4 to 12.7), incl 95000 (655) 45000 (310) 20
Over 1⁄2 to 3 (12.7 to 76.2), incl 90000 (620) 40000 (275) 25
Over 3 (76.2) 85000 (585) 35000 (240) 30
Squares, hexagons, and rectangles:      
All sizes 85000 (585) 35000 (240) 20
Rings and disksB - - -
Cold-worked (annealed) or hot-worked (annealed):      
Rods and bars, all sizes 80000 (550) 35000 (240) 30A
Rings and disksC - - -
Forging Quality: D D D
All sizes      
UNS N06601
Cold-worked (annealed) or hot-worked (annealed):      
All products, all sizes 80000 (550) 30000 (205) 30
Forging Quality: D D D
UNS N06617
Cold-worked (annealed) or hot-worked (annealed):      
All products, all sizes 95000 (655) 35000 (240) 35
Forging Quality: D D D
UNS N06674
Cold-worked (annealedE ) or hot-worked (annealedE ) 86000 (590) 34000 (235) 30
All products, all sizes Forging Quality: D D D
UNS N06690
Cold-worked (as worked):      
Rounds:      
Under 1⁄2 (12.7) 120000 (825) 90000 (620) 7A
1⁄2 to 1 (12.7 to 25.4), incl 110000 (760) 85000 (585) 10
Over 1 to 21⁄2 (25.4 to 63.5), incl 105000 (725) 80000 (550) 12
Squares, hexagons, and rectangles:      
1⁄4 (6.4) and under 100 95000 (690) 80000 (550) 5A 7
Over 1⁄4 to 1⁄2 (6.4 to 12.7), excl 95000 (655) 70000 (480) 7
Hot worked (as worked):      
Rounds:      
1⁄4 to 1⁄2 (6.4 to 12.7), incl 95000 (655) 45000 (310) 20
Over 1⁄2 to 3 (12.7 to 76.2), incl 90000 (620) 40000 (275) 25
Over 3 (76.2) 85000 (585) 35000 (240) 30
Squares, hexagons, and rectangles:      
All sizes 85000 (585) 35000 (240) 20
Rings and disksB - - -
Cold-worked (annealed) or hot-worked (annealed):      
Rods and bars, all sizes 85000 (586) 35000 (240) 30A
Rings and disksC - - -
Forging Quality:      
All sizes D D D
UNS N06693
Cold-worked (annealed) or hot-worked (annealed): Rods and bars, all sizes 100000 (690) 50000 (345) 30
Forging Quality: All sizes D D D
UNS N06603
Cold-worked (annealed) or hot-worked (annealed): 94 000 (650) 43000 (300) 25
All products, all sizes      
Forging Quality: D D D
All sizes      
UNS N06025
Cold-worked (annealed) or hot-worked (annealed): 98 000 (680) 39000 (270) 30
All products, all sizes      
Forging Quality: D D D
All sizes      
UNS N06045
Cold-worked (annealed) or hot-worked (annealed): 90 000 (620) 35 000 (240) 35
All products, all sizes      
Hot-worked (Annealed):F Rods and bars, all sizes 75 000 (517) 30 000 (207) 30
Forging Quality: All sizes D D D
UNS N06696
Cold-worked (annealed and water quenched) or hot-worked (annealed and water quenched) 85 000 (586) 35 000 (240) 30
All products, all sizes      

Properties of Cold-Worked Wire in Coil (Alloys N06600 and N06690 Only)

Condition and Size, in, (mm) Tensile Strength, psi (MPa) Wrapping Test
Min Max
Annealed      
Under 0.032 (0.81) 80 000 (552) 115 000 (793) The wire shall be wrapped eight consecutive turns in a closed helix (pitch approximately equal
to the diameter of the wire) around a mandrel as follows:
0.032 (0.81) and over 80 000 (552) 105 000 (724) (1) For all annealed and regular temper wire and for spring temper wire 0.229 in. (5.82 mm) and less:
Same as diameter of wire.
Cold-worked, regular temper, all sizes 120 000 (827)   (2) For spring temper wire over 0.229 in. (5.82 mm):
Twice the diameter of wire.
Cold-worked, spring temper   165 000 (1138) The wire shall withstand the wrapping test without fracture or development
of a pebbled or orange-peel surface.
Up to 0.057 (1.45), incl 185 000 (1276) ...  
Over 0.057 (1.45) to 0.114 (2.90), incl 175 000 (1207) ...  
Over 0.114 (2.90) to 0.229 (5.82), incl 170 000 (1172) ...  
Over 0.229 (5.82) to 0.329 (8.36), incl 165 000 (1138) ...  
Over 0.329 (8.36) to 0.375 (9.53), incl 160 000 (1103) ...  
Over 0.375 (9.53) to 0.500 (12.7), incl 155 000 (1069) ...  
Over 0.500 (12.7) to 0.563 (14.3), incl 140 000 (965) ...  

ASTM B166 Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103