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STRll chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STRll

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KS STRll

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This page is mainly introduced the STRll chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STRll,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
KS standard martensite heat resistant steel

Steel Garde:STRll
Type:Special Alloy
Country:Korea
Standard:KS
Application:KS standard martensite heat resistant steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	772～024	σb/MPa
Yield Strength	644	σ 0.2 ≥/MPa
Elongation	50	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	727～565	-
HRC	30	-

Physical Properties

Thermal expansion	22-58	e-6/K
Thermal conductivity	55-36	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4170-8864	째C
Density	4597-4423	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
STRll Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk