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EN 10090 Grade X85CrMoV18-2: Quenched & Tempered (QT) Valve Steel – Superior Corrosion & Thermal Resistance

X85CrMoV18-2 is a martensitic Cr-Mo-V-alloyed valve steel. The steel shows very high corrosion resistance in exhaust condensate and good resistance to lead compounds at increased temperatures. Use: inlet valves, exhaust valves, valves

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

210 GPa

Elongation

20.0 °C

7 %

Hardness, Brinell

20.0 °C

296 - 355 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Martensitic Stainless Steel

Reduction of area

20.0 °C

12 %

Shear modulus

23.0 °C

77 GPa

Typical for Martensitic Stainless Steel

Tensile strength

20.0 °C

1000 - 1200 MPa

500.0 °C

550 MPa

550.0 °C

400 MPa

600.0 °C

300 MPa

650.0 °C

230 MPa

700.0 °C

180 MPa

Yield strength Rp0.2

20.0 °C

800 MPa

500.0 °C

500 MPa

550.0 °C

370 MPa

600.0 °C

280 MPa

650.0 °C

170 MPa

700.0 °C

120 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.09E-5 1/K

300.0 °C

1.12E-5 1/K

500.0 °C

1.15E-5 1/K

700.0 °C

1.18E-5 1/K

Melting point

1370 - 1530 °C

Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

500 J/(kg·K)

Thermal conductivity

20.0 °C

21 W/(m·K)

Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

6E-7 Ω·m

Typical for Martensitic Stainless Steel

Chemical properties

PropertyValue

Carbon

0.8 - 0.9 %

Chromium

16.5 - 18.5 %

Manganese

1.5 %

Molybdenum

2 - 2.5 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.03 %

Vanadium

0.3 - 0.6 %


Metal

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  3. EN 10083-1 Grade 51CrV4: Quenched & Tempered Steel (QT)
  4. EN 10213 Grade G17CrMo9-10 – Quenched & Tempered (QT) Steel for High-Temperature Applications
  5. EN 10085 Grade 15 CrMoV 5.9: Quenched & Tempered Steel for Durable Machine Components
  6. EN 10085 Grade 31CrMo12 – High-Performance Quenched & Tempered Steel for Heavy‑Duty Applications
  7. DIN 17480 X85CrMoV18-2 Quenched & Tempered Steel – Technical Specifications
  8. EN 10216-2 Grade 11CrMo9-10 Quenched & Tempered Seamless Tubes – High‑Temperature, High‑Pressure Applications
  9. EN 10090 X40CrSiMo10-2: High‑Performance Quenched & Tempered Valve Steel
  10. EN 10090 X45CrSi9-3 Quenched & Tempered (QT) – High-Performance Valve Steel