DIN 17172 Grade RRStE 240.7 Hot‑Finished Steel Tubes – API 5L/5LX/5LS for Combustible Liquid Pipelines
The steel RRStE 240.7 is produced as seamless or welded tube in the conditions untreated or normalised. Tubes of this steel are conform acc. 5L, 5LX and 5LS of the American Petroleum Institute (API). The Attention should be paid to the technical regulation for combustible liquids TRbF 301. Application: pipelines for combustible liquids (e.g. petroleum and his products) and for compressed or liquid combustible gases
Properties
General
| Property | Temperature | Value | Comment |
|---|---|---|---|
Density | 23.0 °C | 7.8 - 7.9 g/cm³ | Typical for Low Carbon Steel |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 200 - 215 GPa | Typical for Low Carbon Steel |
Elongation, transverse | 20.0 °C | 24 % | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Low Carbon Steel |
Shear modulus | 23.0 °C | 82 GPa | Typical for Low Carbon Steel |
Tensile strength | 20.0 °C | 370 - 490 MPa | |
Tensile strength, transverse | 20.0 °C | 370 - 490 MPa | |
Yield strength | 20.0 °C | 240 MPa | |
Yield strength, transverse | 20.0 °C | 240 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.32E-5 - 1.38E-5 1/K | Typical for Low Carbon Steel |
Max service temperature | 500 °C | Typical for Carbon Steel | |
Melting point | 1480 - 1526 °C | Typical for Low Carbon Steel | |
Specific heat capacity | 23.0 °C | 465 J/(kg·K) | Typical for Low Carbon Steel |
Thermal conductivity | 23.0 °C | 25 - 93 W/(m·K) | Typical for Low Carbon Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 1.43E-7 - 1.74E-7 Ω·m | Typical for Carbon Steel |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.17 % |
Manganese | 0.4 % |
Phosphorus | 0.04 % |
Silicon | 0.45 % |
Sulfur | 0.035 % |
Metal
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