EN 10216-4 Grade P255QL Quenched & Tempered Steel Tubes – High Strength & Excellent Weldability
Tubes made from cryogenic unalloyed quality steel P255QL are predominantly used in apparatus, tank, line construction as well as in general machine and equipment engineering. Weldability is available.
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 | 20.0 °C | 23 % | |
Elongation, transverse | 20.0 °C | 21 % | |
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 | 360 - 490 MPa | |
Tensile strength, transverse | 20.0 °C | 360 - 490 MPa | |
Yield strength Rp0.2 | 20.0 °C | 255 MPa | |
100.0 °C | 185 MPa | ||
200.0 °C | 155 MPa | ||
250.0 °C | 140 MPa | ||
300.0 °C | 125 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 255 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 |
|---|---|
Aluminium | 0.02 % |
Carbon | 0.17 % |
Chromium | 0.3 % |
Copper | 0.3 % |
Manganese | 0.4 - 1.2 % |
Molybdenum | 0.08 % |
Nickel | 0.3 % |
Niobium | 0.01 % |
Phosphorus | 0.03 % |
Silicon | 0.35 % |
Sulfur | 0.01 - 0.02 % |
Titanium | 0.04 % |
Vanadium | 0.02 % |
Metal
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