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STS403 Application:martensitic steel
Category Type Steel grade Standard Country
Grades Special Alloy STS403 KS Korea

Chemical composition % of the ladle analysis of grade STS403

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.15 Max O.50 Max 1.00 Max 0.04 Max O.030 11.5-13.0 Max 0.60
STS403
Mechanical properties of grade STS403
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)
243 (≥) 827 (≥) 31 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 312
Physical properties of grade STS403
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
423 (≥) 711 (≥) 32 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
477 597 189
STS403 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
STS403 KS Korea
Stainless steel bars
STS403FB KS Korea
Stainless steel blooms and billets for forgings
STS403WSB KS Korea
Stainless steel wires for cold heading and cold forging

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