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NV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NV8

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UNS NV8

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This page is mainly introduced the NV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NV8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel for intake valves

Steel Garde:NV8
Type:Stainless Steels
Country:USA
Standard:UNS
Application:Steel for intake valves

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
HNV8	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.35	0.45
Si	3.60	4.20
Mn	0.20	0.40
P		0.030
S		0.04
Cr	1.85	2.50
Ni		0.10
Mo		O.25
Cu		0.25

Mechanical Properties

Tensile strength	423～393	σb/MPa
Yield Strength	495	σ 0.2 ≥/MPa
Elongation	68	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	177～728	-
HRC	30	-

Physical Properties

Thermal expansion	03-56	e-6/K
Thermal conductivity	84-96	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0820-2318	째C
Density	1580-3885	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)
NV8 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