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

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ISO ISO 20A

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This page is mainly introduced the ISO 20A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO 20A,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steels - Chemical composition

Steel Garde:ISO 20A
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 15510 (2010)	Stainless steels -- Chemical composition
2	ISO 16143-1 (2004)	Stainless steels for general purposes -- Part 1: Flat products
3	ISO 16143-2 (2004)	Stainless steels for general purposes -- Part 2: Semi-finished products, bars, rods and sections
4	ISO 16143-3 (2005)	Stainless steels for general purposes -- Part 3: Wire
5	ISO 6931-1 (1994)	Stainless steels for springs - Part 1: Wire
6	ISO 6931-2 (2005)	Stainless steels for springs - Part 2: Narrow strip
7	ISO 9328-7 (2011)	Steel flat products for pressure purposes - Technical delivery conditions - Part 7: Stainless steels
8	ISO/TS 15510 (2003)	Stainless steels - Chemical composition

Metallographic Structure:Austenite
Application:Stainless steels - Chemical composition

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.07
Si		1.00
Mn		2.00
P		0.045
S		0.030
Cr	16.50	18.50
Ni	10.50	13.00
Mo	2.50	3.00
N		0.11

Mechanical Properties

Tensile strength	925～748	σb/MPa
Yield Strength	199	σ 0.2 ≥/MPa
Elongation	91	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	173～982	-
HRC	30	-

Physical Properties

Thermal expansion	91-34	e-6/K
Thermal conductivity	56-57	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0591-1923	째C
Density	9035-1463	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)
ISO 20A Stainless Steels	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