SEW 090-1 Grade S690Q quenched in a liquid medium and tempered
SEW 090-1 Grade S690Q quenched in a liquid medium and tempered introduction
S690Q is a fluid-tempered high strength weldable fine grained steel with a min. yield point of 690 N/mm². It is applicated for steel structures, e.g. bridge and load bearing constructions, transport vehicles, lifting and earth moving machines. The usual thickness range amounts 3 to 100 mm. The lowest application temperature accounts for -20°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.
Equivalent material: DIN 1.8931, EN S690Q, EN 1.8931
SEW 090-1 Grade S690Q quenched in a liquid medium and tempered general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 g/cm³ |
Typical for Steel |
SEW 090-1 Grade S690Q quenched in a liquid medium and tempered thermal
| Property |
Value |
| Max service temperature, long |
Max service temperature, long of -20 - 0 °C |
SEW 090-1 Grade S690Q quenched in a liquid medium and tempered chemical
| Property |
Value |
| Boron |
Boron of 5E-3 % |
| Carbon |
Carbon of 0.2 % |
| Chromium |
Chromium of 1 % |
| Manganese |
Manganese of 1.6 % |
| Molybdenum |
Molybdenum of 0.6 % |
| Nickel |
Nickel of 1.5 % |
| Niobium |
Niobium of 0.05 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.5 % |
| Sulfur |
Sulfur of 0.02 % |
| Vanadium |
Vanadium of 0.12 % |
SEW 090-1 Grade S690Q quenched in a liquid medium and tempered mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 190 - 210 GPa |
Typical for Steel |
| Elongation |
20.0 °C |
Elongation of 14 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 730 - 940 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 620 - 690 MPa |
- |
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