HEV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HEV8

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UNS HEV8

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This page is mainly introduced the HEV8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HEV8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel for exhaust valves

Cross Reference Table(Equivalent Materials):

Material Standard Country
N07032 AISI USA

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.03  0.06
Si   0.20
Mn   0.20
P   0.015
S   0.015
Cr 22.3  22.9
Ni 55.0  58.0
Mo 1.70  2.30

Mechanical Properties

Tensile strength 519~490 σb/MPa
Yield Strength 838 σ 0.2 ≥/MPa
Elongation 05 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 899~039 -
HRC 30 -

Physical Properties

Thermal expansion 81-31 e-6/K
Thermal conductivity 86-35 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1981-4870 째C
Density 3705-5787 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)
HEV8 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

Technical specification/standard for download