STSF6NM Stainless Steels to D 4115 (2001)

STSF6NM - Specification & Application

  • D 4115 (2001) - Stainless steel forgings for pressure vessels

Stainless steel forgings for pressure vessels

Chemical composition(wt.%) of STSF6NM grade: to D 4115 (2001)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.06
Si 0.30 0.60
Mn 0.50 1.00
P - 0.030
S - 0.030
Cr 12.00 14.00
Ni 3.50 4.50
Mo 0.30 0.70

STSF6NM - Detail

Stainless steel forgings for pressure vessels

Mechanical properties of grade STSF6NM D 4115 (2001)

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)
711 (≥) 978 (≥) 44 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical properties of grade STSF6NM D 4115 (2001)

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
954 (≥) 831 (≥) 12 14 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 344
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
369 659 228

Equivalent Grade

Equivalent Products

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