F738 Class A1-70 S30323 Stainless Steels to F 738M (2002)

F738 Class A1-70 S30323 - 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 A1-70 S30323 grade: to F 738M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.2
S - 0.06
Cr 17.0 19.0
Ni 8.00 10.0
Se 0.15 -

F738 Class A1-70 S30323 - Detail

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

Mechanical properties of grade F738 Class A1-70 S30323 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)
654 (≥) 597 (≥) 14 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical properties of grade F738 Class A1-70 S30323 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
617 (≥) 124 (≥) 11 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 124
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
142 229 885

Equivalent Products

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