F738 Class P1-90 S17400 Stainless Steels to F 738M (2002)

F738 Class P1-90 S17400 - 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 P1-90 S17400 grade: to F 738M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.07
Mn - 1.00
Si - 1.00
P - 0.04
S - 0.03
Cr 15.50 17.50
Ni 3.00 5.00
Mo - -
Cu 3.00 5.00
Nb 0.15 0.45

F738 Class P1-90 S17400 - Detail

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

Mechanical properties of grade F738 Class P1-90 S17400 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)
813 (≥) 678 (≥) 23 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical properties of grade F738 Class P1-90 S17400 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
269 (≥) 315 (≥) 21 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 433
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
647 224 148
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