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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)
736 (≥)	244 (≥)	43	24	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	111

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
751 (≥)	165 (≥)	42	32	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	322
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
566	115	412

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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