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1.7709 / 21CrMoV5-7

Properties
1.7709 is a Cr-Mo-V alloyed heat-resistant structural steel with good toughness. In continuous operation, its application temperature is up to 550 °C.

Delivery Condition
- quenched and tempered (+QT)
- quenched, tempered, stress relieved (+QT +SR)
- spheroid. annealed (+AC), max. 229 HBW

Application Area
Components for increased operating tempera-tures up to 550 °C.

Typical Applications
- Fasteners
- Turbine shafts
- Flanges and rings
- Components for thermal power plants

Grade no.: 1.7709
Grade name: 21CrMoV5-7