F 837 Class A1-70 S31600 Stainless Steels to F 837M (2002)

F 837 Class A1-70 S31600 - Specification & Application

  • F 837M (2002) - Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Chemical composition(wt.%) of F 837 Class A1-70 S31600 grade: to F 837M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 16.0 18.0
Ni 10.0 14.0
Mo 2.00 3.00

F 837 Class A1-70 S31600 - Detail

Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Mechanical properties of grade F 837 Class A1-70 S31600 F 837M (2002)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
147 (≥) 525 (≥) 31 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical properties of grade F 837 Class A1-70 S31600 F 837M (2002)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
289 (≥) 444 (≥) 41 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 421
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
477 813 369
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