EN 10025-6 Grade S620QL1 quenched and tempered (+QT)
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) introduction
S620QL1 is a fluid tempered high-strength fine grain weldable steel and a min. yield point of 620 N/mm². It is applicated for steel structures, e.g. bridge and load-carrying constructions, transport vehicles, lifting and earthmoving machines. The normal thickness span is 3 to 50 mm. Lowest application temperature -60 deg. C. The steel is cold forming processed, i.e. at temperatures below highest tolerable stress relieving temperature of 530 to 560 deg. C. After hot forming above 580 deg. C has to be conducted a repeated tempering in order to achieve delivery condition qualities. The steel is combustible and fusion cuttable subject to appropriate operating method. Surface condition influences flame cutting. Preheating up to 100 - 200 deg. C is advisable for workpiece temperatures below 5 deg. C and if flame cutting edges are cold formed on further processing.
Instructions:
The steel is suitability tested for steam boiler and pressure vessel construction according to instructions valid for Federal Republic of Germany (VdTÜV-Werkstoffblatt 257).
Equivalent material: DIN S620QL1, ASTM Grade 100, IS S620QF, DIN EStE620V, ASTM A709 Grade 100, DIN 1.8987, EN 1.8987
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) general
| Property | Temperature | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|---|
| Density | 20 °C | Density of 7.84 g/cm³ | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat |
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) thermal
| Property | Temperature | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|---|
| Coefficient of thermal expansion | 100 °C | Coefficient of thermal expansion of 1.2e-05 1/K | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat |
| Specific heat capacity | 20 °C | Specific heat capacity of 430 J/(kg·K) | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat |
| Thermal conductivity | 20 °C | Thermal conductivity of 38 W/(m·K) | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat |
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) chemical
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
| Aluminium | Aluminium of 0.015 % | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat |
| Boron | Boron of 0.005 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Carbon | Carbon of 0.2 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Chromium | Chromium of 1.5 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Copper | Copper of 0.5 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Manganese | Manganese of 1.6 % | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat |
| - | Manganese of 1.7 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Molybdenum | Molybdenum of 0.6 % | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat |
| - | Molybdenum of 0.7 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Nickel | Nickel of 2 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Niobium | Niobium of 0.06 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Nitrogen | Nitrogen of 0.015 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Phosphorus | Phosphorus of 0.02 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Silicon | Silicon of 0.8 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Sulfur | Sulfur of 0.01 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Titanium | Titanium of 0.05 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Vanadium | Vanadium of 0.12 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
| Zirconium | Zirconium of 0.12 % | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat |
| - | Zirconium of 0.15 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat |
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) electrical
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
| Electrical conductivity | - | Electrical conductivity of 5 S/m | - | - | - | Predicted Value |
| Electrical resistivity | 20 °C | Electrical resistivity of 2.8e-07 Ω·m | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat | - |
EN 10025-6 Grade S620QL1 quenched and tempered (+QT) mechanical
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
| Elastic modulus | 20 °C | Elastic modulus of 210 GPa | quenched and tempered (+QT) | EN 10025-6, EN 10137-2 | Flat | - |
| Elongation | - | Elongation of 12.7 % | - | - | - | Predicted Value, A80 |
| - | - | Elongation of 12.7 % | - | - | - | Predicted Value, A200 |
| - | - | Elongation of 18.2 % | - | - | - | Predicted Value, A5 |
| - | - | Elongation of 18.3 % | - | - | - | Predicted Value, A80 Transverse |
| - | - | Elongation of 19.4 % | - | - | - | Predicted Value, A50 |
| - | 20 °C | Elongation of 15 % | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Elongation of 17 % | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | Transverse |
| Poisson's ratio | - | Poisson's ratio of 0.3 [-] | - | - | - | Typical for Steel |
| Reduction of area | - | Reduction of area of 40.3 % | - | - | - | Predicted Value |
| - | - | Reduction of area of 44.8 % | - | - | - | Predicted Value, Transverse |
| Shear modulus | - | Shear modulus of 79.6 GPa | - | - | - | Predicted Value |
| Shear strength | - | Shear strength of 598.9 MPa | - | - | - | Predicted Value |
| Tensile strength | 20 °C | Tensile strength of 650 - 890 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Tensile strength of 650 - 830 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Tensile strength of 700 - 890 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Tensile strength of 700 - 830 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Tensile strength of 700 - 890 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | Transverse |
| Yield strength | - | Yield strength of 309.5 MPa | - | - | - | Predicted Value, RP1 |
| - | - | Yield strength of 329.7 MPa | - | - | - | Predicted Value, RP1 Transverse |
| - | - | Yield strength of 501.5 MPa | - | - | - | Predicted Value, RP02 Transverse |
| - | - | Yield strength of 541.7 MPa | - | - | - | Predicted Value, RP05 |
| - | - | Yield strength of 629.5 MPa | - | - | - | Predicted Value, RP002 |
| - | 20 °C | Yield strength of 560 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Yield strength of 580 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Yield strength of 620 MPa | quenched and tempered (+QT) | EN 10137-2, EN 10025-6, VdTÜV WB 257 | Sheet, Flat | - |
| - | 20 °C | Yield strength of 620 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | Transverse |
| - | 100 °C | Yield strength of 590 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 150 °C | Yield strength of 570 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 200 °C | Yield strength of 540 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 250 °C | Yield strength of 520 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 300 °C | Yield strength of 500 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 350 °C | Yield strength of 485 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
| - | 400 °C | Yield strength of 470 MPa | quenched and tempered (+QT) | EN 10137-2 | Sheet, Flat | RP02 |
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