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STR660 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR660

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KS STR660

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This page is mainly introduced the STR660 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STR660,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat - resisting steel plates and sheets

Steel Garde:STR660
Type:Stainless Steels
Country:Korea
Standard:KS

Standard Number:

ITEM	Standard Number	Descriptions
1	D 3731 (2002)	Heat - resisting steel bars
2	D 3732 (2002)	Heat - resisting steel plates and sheets

Metallographic Structure:Austenite
Application:Heat - resisting steel plates and sheets

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	13.50	16.00
Ni	24.00	27.00
Mo	1.00	1.50
N
Al		0.35
Ti	1.90	2.35
V	0.10	0.50
B	0.001	0.010

Mechanical Properties

Tensile strength	481～402	σb/MPa
Yield Strength	187	σ 0.2 ≥/MPa
Elongation	28	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	840～804	-
HRC	30	-

Physical Properties

Thermal expansion	09-12	e-6/K
Thermal conductivity	45-41	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5296-8961	째C
Density	4851-2418	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)
STR660 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