F738 Class A2-70 S34700 Stainless Steels to F 738M (2002)

F738 Class A2-70 S34700 - Specification & Application

  • F 738M (2002) - Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

Chemical composition(wt.%) of F738 Class A2-70 S34700 grade: to F 738M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Mn - 2.00
Si - 1.00
P - 0.045
S - 0.03
Cr 17.00 19.00
Ni 9.00 13.00
Ta - 1.10

F738 Class A2-70 S34700 - Detail

Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

Mechanical properties of grade F738 Class A2-70 S34700 F 738M (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)
587 (≥) 467 (≥) 43 32 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical properties of grade F738 Class A2-70 S34700 F 738M (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
689 (≥) 455 (≥) 44 43 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 443
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
721 146 114

Equivalent Products

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