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X9CrNi18-8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X9CrNi18-8

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ISO X9CrNi18-8

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This page is mainly introduced the X9CrNi18-8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X9CrNi18-8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steels for springs - Part 1: Wire

Steel Garde:X9CrNi18-8
Type:Stainless Steels
Country:International
Standard:ISO
Standard Number:

ITEM Standard Number Descriptions

1 ISO 6931-1 Stainless steels for springs - Part 1: Wire
Application:Stainless steels for springs - Part 1: Wire

ITEM	Standard Number	Descriptions
1	ISO 6931-1	Stainless steels for springs - Part 1: Wire

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.12
Si		1.50
Mn		2.00
P		0.045
S		0.030
Cr	16.00	19.00
Mo
Ni	6.50	9.50

Mechanical Properties

Tensile strength	697～801	σb/MPa
Yield Strength	676	σ 0.2 ≥/MPa
Elongation	92	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	663～412	-
HRC	30	-

Physical Properties

Thermal expansion	33-74	e-6/K
Thermal conductivity	63-61	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3827-9075	째C
Density	8061-4166	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)
X9CrNi18-8 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