S34720 Stainless Steels

S34720 - Specification & Application

Austenitic Chromium Nickel Free-Machining Stainless Steel (Columbium stabilized)

Chemical composition(wt.%) of S34720 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Mn - 2.00
Si - 1.00
P - 0.04
S 0.18 0.35
Cr 17.00 19.00
Ni 9.00 12.00

S34720 - Detail

Austenitic Chromium Nickel Free-Machining Stainless Steel (Columbium stabilized)

Mechanical properties of grade S34720

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)
851 (≥) 241 (≥) 24 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade S34720

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
315 (≥) 285 (≥) 44 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
396 683 855

Equivalent Grade

Equivalent Products

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