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NV4(3140) chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NV4(3140)

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UNS NV4(3140)

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This page is mainly introduced the NV4(3140) chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NV4(3140),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:NV4(3140)
Type:Stainless Steels
Country:USA
Standard:UNS
Application:Steel for intake valves

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.38	0.43
Si	0.15	0.30
Mn	0.70	0.90
P		0.04
S		0.04
Cr	0.35	0.65
Ni	1.10	1.40

Mechanical Properties

Tensile strength	211～748	σb/MPa
Yield Strength	659	σ 0.2 ≥/MPa
Elongation	40	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	896～835	-
HRC	30	-

Physical Properties

Thermal expansion	60-17	e-6/K
Thermal conductivity	22-74	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4050-7833	째C
Density	7515-6250	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)
NV4(3140) 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