SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered introduction
S690G2QL is a fluid-tempered high strength weldable fine grained steel with a min. yield point of 690 N/mm². It is applicated for constructions whose behaviour predominantly depends on wear resistance of the material, e.g. wearing parts of mining and earth moving machines transport and crushing and grinding machines, scrap presses and other work machines. The usual thickness range amounts 3 to 32 mm. The lowest application temperature accounts for -50°C. The steel is processed by cold forming, at temperatures below the highest permissible stress relieving temperature of 530 to 580 °C. After hot forming at 700 to 1050 °C has to be coducted a retempering in order to achieve delivery condition qualities. The steel is combustible and electric arc cuttable subject to appropriate mode of operation. Flame cutting is affected by the surface condition. Preheating to 100 to 200 °C is advisable for workpiece temperatures below 5 °C and if the thermal cut edges should be cold formed on processing.
Instructions:
The steel is suitability tested for the construction of pressure vessels and pressure pipes according to the regulations valid in Germany (VdTÜV-material data sheet 257).
Equivalent material: DIN TStE690VB, DIN 1.8921, EN S690G2QL, EN 1.8921
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.84 g/cm³ |
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered thermal
| Property |
Temperature |
Value |
| Coefficient of thermal expansion |
100.0 °C |
Coefficient of thermal expansion of 1.2E-5 1/K |
| Max service temperature, long |
- |
Max service temperature, long of -50 - 0 °C |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 430 J/(kg·K) |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 38 W/(m·K) |
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered chemical
| Property |
Value |
| Boron |
Boron of 5E-4 % |
| Carbon |
Carbon of 0.12 - 0.2 % |
| Chromium |
Chromium of 0.4 - 0.65 % |
| Manganese |
Manganese of 0.7 - 1 % |
| Molybdenum |
Molybdenum of 0.15 - 0.25 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.2 - 0.35 % |
| Sulfur |
Sulfur of 0.015 % |
| Titanium |
Titanium of 0.05 % |
| Vanadium |
Vanadium of 0.03 - 0.08 % |
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.8E-7 Ω·m |
SEW 090-1 Grade S690G2QL quenched in a liquid medium and tempered mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 210 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 14 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 16 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 760 - 900 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 760 - 900 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 690 MPa |
- |
| Yield strength, transverse |
20.0 °C |
Yield strength, transverse of 690 MPa |
- |
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