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EV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of EV8

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UNS EV8

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This page is mainly introduced the EV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of EV8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel for exhaust valves

Steel Garde:EV8
Type:Stainless Steels
Country:USA
Standard:UNS
Application:Steel for exhaust valves

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
S63008	AISI	USA
HEV8	UNS	USA
N07032	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.48	0.58
Si		0.25
Mn	8.00	10.0
P		0.050
S		0.035
Cr	20.0	23.0
Ni	3.25	4.50
N	0.38	0.55

Mechanical Properties

Tensile strength	585～690	σb/MPa
Yield Strength	075	σ 0.2 ≥/MPa
Elongation	65	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	116～998	-
HRC	30	-

Physical Properties

Thermal expansion	53-95	e-6/K
Thermal conductivity	16-71	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8176-2340	째C
Density	4478-3306	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)
EV8 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