EV9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of EV9

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UNS EV9

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This page is mainly introduced the EV9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of EV9,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
S63009 AISI USA

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.35  0.50
Si 0.30  0.80
Mn   1.00
P   0.045
S   0.030
Cr 12.0  15.0
Ni 12.0  15.0
Mo 0.20  0.50
W 1.50  3.00

Mechanical Properties

Tensile strength 717~139 σb/MPa
Yield Strength 241 σ 0.2 ≥/MPa
Elongation 08 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 699~922 -
HRC 30 -

Physical Properties

Thermal expansion 19-61 e-6/K
Thermal conductivity 90-68 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1694-0283 째C
Density 5795-8085 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)
EV9 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