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ASTM B865

ASTM B865 Specification

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

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Scope

ASTM B865 specification covers nickel-copper-aluminum alloy (UNS N05500) in the form of rounds, squares, hexagons, or rectangles, and forgings and forging stock, manufactured either by hot working or cold working, and cold-worked wire.

Chemical Requirements

ElementNiAAlCFeMnSiTiSCu
Composition Limits, %63.0 min2.30-3.150.18 max2.0 max1.5 max0.50 max0.35-0.850.010 max27.0-33.0
Product (check) analysis variations, under
min or over max, of the specified limit of element, %		0.450.200.010.050.040.030.03 min 0.04 max0.0030.15 min 0.20 max
  • A The nickel content shall be determined arithmetically by difference.

Mechanical Requirements

UnagedA (Bar, Rod, Forgings)

FormConditionHardness
Brinell 3000 kg, maxRockwell, max
Rounds,B hexagons, squares, rectangles, and forgingsHot-worked245C23
HexagonsCold-worked260C26
Rounds:   
⁄4 (6.4 mm) to 1 in. (25.4 mm), inclCold-worked280C29
Over 1 (25.4 mm) to 3 in. (76.2 mm), inclCold-worked260C26
Over 3 (76.2 mm) to 4 in. (101.6 mm), inclCold-worked240C22
Rounds, hexagons, squares, rectangles, and forgingsHot-worked or coldworked and annealed185B90
  • A No tensile tests are required except as provided for in 9.2.3.
    B Rounds over 41⁄4 in. (108.0 mm) in diameter shall have hardness of 260 BHN, max.

Age-HardenedA (Bar, Rod, and Forgings)

FormConditionMaximum Section Thickness, in. (mm)Tensile Strength, min, ksi (MPa)Yield StrengthB, 0.2 % offset, min, ksi (MPa)ElongationB in 2 in. or 4D, min,%HardnessC
Brinell 3000 kg, minRockwell C, min
RoundsD, hexagons, squares, rectangles, and forgingsEHot-worked and agehardenedAll sizes140 (965)100 (690)20.026527
RoundsCold-worked and age-hardened1⁄4 (6.4) to 1 (25.4), incl145 (1000)110 (760)15.030032
over 1 (25.4) to 3 (76.2), incl140 (965)100 (690)17.028029
over 3 (76.2) to 4 (101.6), incl135 (930)95 (655)20.025525
HexagonsCold-worked and agehardened1⁄4 (6.4) to 2 (50.8), incl140 (965)100 (690)15.026527
Rounds, hexagons, squares, rectangles, and forgingsAnnealed and age-hardenedFUp to 1 (25.4)130 (895)90 (620)20.025024
1 (25.4) and over130 (895)85 (585)20.025024
  • A. Age hardening heat treatment: Age hardening shall be accomplished by holding at an aim temperature of 1100°F (595°C) for 8 to 16 h followed by furnace cooling to 900°F (480°C) at a rate of 15 to 25°F (10 to 15°C) per hour and then air cooling. An alternate procedure consists of holding at 1100°F (595°C) for up to 16 h, furnace cooling to 1000°F (540°C), holding for approximately 6 h, furnace cooling to 900°F (480°C), holding for approximately 8 h, and air cooling to room temperature. (Mill age-hardened products have been precipitation heat treated by the manufacturer and further thermal treatment normally is not required. Hot-worked, cold-worked, or annealed material is normally age hardened by the purchaser after forming or machining.)
    B. Not applicable to subsize tensile specimens less than 0.250 in. (6.4 mm) in diameter.
    C. Hardness values are given for information only and are not the basis for acceptance or rejection.
    D. Rounds over 41⁄4 in. (108.0 mm) in diameter shall have an elongation in 2 in. (50.8 mm) or 4D of 17 %, min.
    E. When specified, for forged rings and discs, hardness measurements may be utilized in lieu of tensile test.
    F. Applicable to both hot-worked and cold-worked material.

Tensile Strength

Condition and Size, in. (mm)Tensile Strength, min, ksi (MPa)
Cold-worked, as-worked, all sizes110-155 (760-1070)A
Cold-worked and annealed, all sizes110 (760)B
Cold-worked, spring temper, as-drawn 0.057 (1.45) and lessC165 (1140)
Over 0.057 to 0.114 (1.45 to 2.90), incl155 (1070)
Over 0.114 to 0.229 (2.90 to 5.82), incl150 (1035)
Over 0.229 to 0.312 (5.82 to 7.92), incl145 (1000)
Over 0.312 to 0.375 (7.92 to 9.52), incl135 (930)
Over 0.375 to 0.437 (9.52 to 11.10), incl125 (860)
Over 0.437 to 0.563 (11.10 to 14.30), incl120 (825)
Cold-worked, annealed, and age-hardened,D all sizes130 (895)
Cold-worked, as drawn, age-hardened,D all sizes155 (1070)
Cold-worked, spring temper, and age-hardenedD Up to 0.114 (2.90), incl180 (1240)
Over 0.114 to 0.375 (2.90 to 9.52), incl170 (1170)
Over 0.375 to 0.563 (9.52 to 14.30), incl160 (1105)
  • A Maximum and minimum.
    B Maximum.
    C Applicable to material in coil. For material in straightened and cut lengths, deduct 15 ksi (105 MPa) from above values.
    D Age hardening heat treatment:
    Age hardening shall be accomplished by holding at an aim temperature of 1100°F (595°C) for 8 to 16 h followed by furnace cooling to 900°F (480°C) at a rate of 15 to 25°F (10 to 15°C) per hour and then air cooling. An alternate procedure consists of holding at 1100°F (595°C) for up to 16 h, furnace cooling to 1000°F (540°C), holding for approximately 6 h, furnace cooling to 900°F (480°C), holding for approximately 8 h, and air cooling to room temperature.
    (Mill age-hardened products have been precipitation heat treated by the manufacturer and further thermal treatment is not normally required. Hot-worked, cold-worked, or annealed material is normally age hardened by the purchaser after forming or machining.)

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

Supplementary Requirements

S1Special End Uses