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SCM421 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SCM421

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CNS SCM421

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This page is mainly introduced the SCM421 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SCM421,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SCM421

Steel Garde:SCM421
Type:Special Alloy
Country:China
Standard:CNS
Application:China Taiwan Structural steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	684～534	σb/MPa
Yield Strength	270	σ 0.2 ≥/MPa
Elongation	85	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	049～893	-
HRC	30	-

Physical Properties

Thermal expansion	91-94	e-6/K
Thermal conductivity	38-26	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9067-9621	째C
Density	3110-7289	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)
SCM421 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