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STS4Application:Carbide for cutting tools
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy STS4KSKorea

Chemical composition%of the ladle analysis of gradeSTS4

C(％)Si(％)Mn(％)Cr(％)W(%)
0.45-0.55≤0.35≤0.500.50-1.000.50-1.00
Mechanical properties of gradeSTS4
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 ConditionBrinell hardness(HBW)
624(≥)368(≥)123341Solution and Aging,Annealing,Ausaging,Q+T,etc432
Physical properties of gradeSTS4
PropertyDensity
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
792(≥)416(≥)243334Solution and Aging,Annealing,Ausaging,Q+T,etc231
Temp.
°C/°F		Creep strain limit
(10000h)
(Rp1,0)N/mm2		Creep rupture strength
(10000h)
(Rp1,0)N/mm2
273536261
STS4Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
STS405KSKorea
Stainless steel bars
STS405TBKSKorea
Stainless steel for boiler and heat exchanger tubes
STS405TPKSKorea
Stainless lined steel pipe
STS410LKSKorea
Stainless steel bars
STS430KSKorea
Stainless steel bars
STS430TKAKSKorea
Stainless steel pipes for machine and structural purposes
STS430TKCKSKorea
Stainless steel pipes for machine and structural purposes
STS430TBKSKorea
Stainless steel for boiler and heat exchanger tubes
STS430WSBKSKorea
Stainless steel wires for cold heading and cold forging
STS430CAKSKorea
Cold - rolled formed stainless steel equal leg angles
STS430TPKSKorea
Stainless lined steel pipe
STS430FKSKorea
Free - machining stainless steel wire and wire rods
STS430FSeKSKorea
Free - machining stainless steel wire and wire rods
STS434KSKorea
Stainless steel bars
STS434WSBKSKorea
Stainless steel wires for cold heading and cold forging
STS447J1KSKorea
Stainless steel bars
STS403KSKorea
Stainless steel bars
STS403FBKSKorea
Stainless steel blooms and billets for forgings
STS403WSBKSKorea
Stainless steel wires for cold heading and cold forging
STS410KSKorea
Stainless steel bars

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