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ASTM A705

ASTM A705 Specification

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

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Scope

ASTM A705 specification covers age-hardening stainless steel forgings for general use

Chemical Requirements

UNS
DesignationB		TypeCMnPSSiCrNiAlMoTiCuOther Elements
S174006300.071.000.0400.0301.0015.00-17.503.00-5.00………3.00-5.00C
S177006310.091.000.0400.0301.0016.00-18.006.50-7.750.75-1.50…………
S157006320.091.000.0400.0301.0014.00-16.006.50-7.750.75-1.502.00-3.00………
S355006340.10-0.150.50-1.250.0400.0300.5015.00-16.004.00-5.00…2.50-3.25……D
S176006350.081.000.0400.0301.0016.00-17.506.00-7.500.40…0.40-1.20……
S15500XM-120.071.000.0400.0301.0014.00-15.503.50-5.50………2.50-4.50C
S13800XM-130.050.200.0100.0080.1012.25-13.257.50-8.500.90-1.352.00-2.50……E
S45500XM-160.030.500.0150.0150.5011.00-12.507.50-9.50…0.500.90-1.401.50-2.50F
S45503…0.0100.500.0100.0100.2011.00-12.507.50-9.50…0.501.00-1.351.50-2.50F
S45000XM-250.051.000.0300.0301.0014.00-16.005.00-7.00…0.50-1.00…1.25-1.75G
  • B New designation established in accordance with Practice E 527 and SAEJ1086, Recommended Practice for Numbering Metals and alloys (UNS).
    C Columbium plus tantalum 0.15–0.45.
    D Nitrogen 0.07–0.13.
    E Nitrogen 0.01.
    F Columbium plus tantalum 0.10–0.50.
    G Columbium 8 times carbon minimum.

Heat Treatment

TypeConditionSolution TreatmentTensile Strength, minYield Strength, minElongation in 2 in. [50 mm] or 4D, min. %Reduction of Area, minute %HardnessB
ksi[MPa]ksi[MPa]Rockwell C, maxBrinell, max
630A1900 6 25°F [1040 6 15°C] (cool as required to below 90°F [32°C]). . .. . .. . .. . .. . .. . .38363
631A1900 6 25°F [1040 6 15°C] (water quench). . .. . .. . .. . .. . .. . .Rb89229
632A1900 6 25°F [1040 6 15°C] (water quench). . .. . .. . .. . .. . .. . .Rb100269C
634DA1900 6 25°F [1040 6 15°C] quench, hold not less than 3 h at minus 100°F or lower. . .. . .. . .. . .. . .. . .. . .363D
635A1900 6 25°F [1040 6 15°C] (air cool)120[825]75[515]104532302
XM-12A1900 6 25°F [1040 6 15°C] (cool as required to below 90°F [32°C]). . .. . .. . .. . .. . .. . .38363
XM-13A1700 6 25°F [925 6 15°C] (cool as required to below 60°F [16°C]). . .. . .. . .. . .. . .. . .38363
XM-16A1525 6 25°F [830 6 15°C] (cool rapidly). . .. . .. . .. . .. . .. . .36331
S45503A1525 6 25°F [830 6 15°C] (cool rapidly). . .. . .. . .. . .. . .. . .36331
XM-25A1900 6 25°F [1040 6 15°C] (cool rapidly)125E[860]95[655]104033311
  • B Either Rockwell C hardness or Brinell is permissible. On sizes of 1⁄2 in. (12.70 mm) and smaller, Rockwell C is preferred.
    C 321 BHN for rounds cold drawn after solution treating.
    D Equalization and over-tempering treatment 1425 6 50°F [775 6 30°C] for not less than 3 h, cool to room temperature, heat to 1075 6 25°F [580 6 15°C] for not less than 3 h.
    E 125 − 165 ksi [860 − 1140 MPa] for sizes up to 1⁄2 in. [13 mm]

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