Sitemap | E-mail:[email protected]

STS21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS21

Location » Home » Grades > Special Alloy > STS21

Contact

+86-13880247006

E-mail: [email protected]

KS STS21

Profile

This page is mainly introduced the STS21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:STS21
Type:Special Alloy
Country:Korea
Standard:KS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS21	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	650～762	σb/MPa
Yield Strength	501	σ 0.2 ≥/MPa
Elongation	51	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	633～857	-
HRC	30	-

Physical Properties

Thermal expansion	06-82	e-6/K
Thermal conductivity	69-47	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8780-4180	째C
Density	8209-7003	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)
STS21 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