SUS 321FB Stainless Steels to G 4319 (1991)

SUS 321FB - Specification & Application

  • G 4319 (1991) - Stainless steel blooms and billets for forgings

Stainless steel blooms and billets for forgings

Chemical composition(wt.%) of SUS 321FB grade: to G 4319 (1991)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 17.00 19.00
Ni 9.00 13.00
Mo - -
Ti 5×C% -

SUS 321FB - Detail

Stainless steel blooms and billets for forgings

Mechanical properties of grade SUS 321FB G 4319 (1991)

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)
566 (≥) 817 (≥) 34 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical properties of grade SUS 321FB G 4319 (1991)

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
892 (≥) 627 (≥) 44 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
362 273 746

Equivalent Grade

Equivalent Products

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