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SN400A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SN400A

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CNS SN400A

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This page is mainly introduced the SN400A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SN400A,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SN400A

Steel Garde:SN400A
Type:Special Alloy
Country:China
Standard:CNS
Application:China Taiwan Structural steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	312～573	σb/MPa
Yield Strength	545	σ 0.2 ≥/MPa
Elongation	69	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	221～968	-
HRC	30	-

Physical Properties

Thermal expansion	10-34	e-6/K
Thermal conductivity	45-28	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4778-5588	째C
Density	2445-2498	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)
SN400A 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