EN 10216-2 Grade 11CrMo9-10 Quenched & Tempered Seamless Tubes – High‑Temperature, High‑Pressure Applications
Seamless tubes of the high-temperature 11CrMo9-10 are used in steam boiler and pipeline construction, pressure vessel and apparatus engineering, especially in chemical industry and power station construction at temperatures from approx. 200 °C to maximum 400 °C and simultaneously high pressures. The total load and the special scaling circumstances can decrease or increase the temperature limit. Weldability is available.
Properties
General
| Property | Temperature | Value | Comment |
|---|---|---|---|
Density | 23.0 °C | 7.8 - 7.9 g/cm³ | Typical for Chromium Molybdenum Steel |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 200 - 215 GPa | Typical for Chromium Molybdenum Steel |
Elongation | 20.0 °C | 20 % | |
Elongation, transverse | 20.0 °C | 18 % | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Chromium Molybdenum Steel |
Tensile strength | 20.0 °C | 540 - 680 MPa | |
Tensile strength, transverse | 20.0 °C | 540 - 680 MPa | |
Yield strength Rp0.2 | 20.0 °C | 355 MPa | |
100.0 °C | 323 MPa | ||
150.0 °C | 312 MPa | ||
200.0 °C | 304 MPa | ||
250.0 °C | 296 MPa | ||
300.0 °C | 289 MPa | ||
350.0 °C | 280 MPa | ||
400.0 °C | 275 MPa | ||
450.0 °C | 257 MPa | ||
500.0 °C | 239 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 355 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.1E-5 - 1.4E-5 1/K | Typical for Chromium Molybdenum Steel |
Max service temperature, long | 200 - 550 °C | ||
Melting point | 1382 - 1529 °C | Typical for Chromium Molybdenum Steel | |
Specific heat capacity | 23.0 °C | 448 - 502 J/(kg·K) | Typical for Chromium Molybdenum Steel |
Thermal conductivity | 23.0 °C | 36 - 43 W/(m·K) | Typical for Chromium Molybdenum Steel |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.04 % |
Carbon | 0.08 - 0.15 % |
Chromium | 2 - 2.5 % |
Copper | 0.3 % |
Manganese | 0.4 - 0.8 % |
Molybdenum | 0.9 - 1.1 % |
Nickel | 0.3 % |
Phosphorus | 0.03 % |
Silicon | 0.5 % |
Sulfur | 0.01 - 0.02 % |
Metal
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