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20a chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20a

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ISO 20a

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This page is mainly introduced the 20a chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20a,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ISO standard thermal deformation of stainless steel

Steel Garde:20a
Type:Special Alloy
Country:ISO
Standard:ISO
Application:ISO standard thermal deformation of stainless steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ISO 20a	ISO	ISO
ML20Al	GBT	China
SWRCH20A	CNS	China
STKM20A	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	072～091	σb/MPa
Yield Strength	699	σ 0.2 ≥/MPa
Elongation	76	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	547～562	-
HRC	30	-

Physical Properties

Thermal expansion	54-30	e-6/K
Thermal conductivity	30-47	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8216-1604	째C
Density	3350-5024	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)
20a 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