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304S31 Application:austenitic special steel
Category Type Steel grade Country
Grades Special Alloy 304S31 UK

Chemical composition % of the ladle analysis of grade 304S31

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.07 Max 1.00 Max 2.00 Max 0.045 Max 0.03 17.0-19.0 8.00-11.0
304S31
Mechanical properties of grade 304S31
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)
236 (≥) 715 (≥) 12 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 231
Physical properties of grade 304S31
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
411 (≥) 712 (≥) 12 32 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
256 816 783
304S31 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
304S31 UK
Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes
HFS 304S31 UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
LW 304S31 UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for longitudinally welded tubes
304 S31 UK
Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes
HFS304 S31 UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes
LW304 S31 UK
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for longitudinally welded tubes

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