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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.
KS standard austenitic heat resistant steel

Steel Garde:STR660
Type:Special Alloy
Country:Korea
Standard:KS
Application:KS standard austenitic heat resistant steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	909～571	σb/MPa
Yield Strength	555	σ 0.2 ≥/MPa
Elongation	78	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	030～077	-
HRC	30	-

Physical Properties

Thermal expansion	04-08	e-6/K
Thermal conductivity	97-62	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2230-6551	째C
Density	2205-2123	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 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