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STR11 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR11

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KS STR11

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This page is mainly introduced the STR11 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR11,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat - resisting steel bars

Steel Garde:STR11
Type:Stainless Steels
Country:Korea
Standard:KS
Standard Number:

ITEM Standard Number Descriptions

1 D 3731 (2002) Heat - resisting steel bars
Metallographic Structure:Martensite
Application:Heat - resisting steel bars

ITEM	Standard Number	Descriptions
1	D 3731 (2002)	Heat - resisting steel bars

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.45	0.55
Si		1.00
Mn		2.00
P		0.03
S		0.03
Cr	7.50	9.50
Ni		0.60
Mo
N
Cu		0.30

Mechanical Properties

Tensile strength	173～237	σb/MPa
Yield Strength	269	σ 0.2 ≥/MPa
Elongation	90	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	909～361	-
HRC	30	-

Physical Properties

Thermal expansion	62-34	e-6/K
Thermal conductivity	96-07	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1756-8604	째C
Density	3765-5845	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)
STR11 Stainless Steels	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