Get Appoinment

Location » Home » Grades > Special Alloy > STS631

KS STS631 Enquiry | Print this page

STS631 Application:martensitic steel

Category	Type	Steel grade	Standard	Country
Grades	Special Alloy	STS631	KS	Korea

Chemical composition % of the ladle analysis of grade STS631

C(％)	Si(％)	Mn(％)	P(％)	S(％)	Cr(％)	Ni(％)	Al(%)
Max 0.09	Max 1.00	Max 1.00	Max 0.04	Max 0.03	16.0-18.0	6.50-7.75	0.75-1.50

STS631

Mechanical properties of grade STS631

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)
993 (≥)	256 (≥)	43	32	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	343

Physical properties of grade STS631

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
581 (≥)	255 (≥)	14	21	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	324
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
664	319	795

STS631 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
STS631	KS	Korea	Stainless steel bars
STS631CSP	KS	Korea	Cold rolled stainless steel strip for springs
STS631J1	KS	Korea	Stainless steel wire rods

Enquiry