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AISI S21400 Details

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S21400 Application:Chemical compositions of SAE wrought stainless steels

Category Type Grade Microstructure Designations
Grades Stainless Steels S21400 Austenite USA - AISI ,

Chemical composition(wt.%) of S21400 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si 0.30 1.00
Mn 14.5 16.0
P - 0.045
S - 0.03
Cr 17.0 18.5
Ni - 1.00
N - 0.35
S21400

Mechanical properties of grade S21400

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)
497 (≥) 327 (≥) 13 24 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical properties of grade S21400

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
448 (≥) 395 (≥) 34 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 113
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
333 942 212

S21400 - Form of Supply

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
XM-31 UNS USA
Chemical compositions of SAE wrought stainless steels
S21400 AISI USA
Chemical compositions of SAE wrought stainless steels
A 240 S21400 SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 580 S21400 SAE USA
Stainless Steel Wire
S21400 AISI USA
Austenitic Chromium Manganese Stainless Steel
SA-240 S21400 AMS USA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

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