~21CrMoV5-7 / ~WNr. 1.7709 / 15320
~21CrMoV5-7 / ~WNr. 1.7709 / 15320 – Cr-Mo-V steel low-alloyed, bainitic, suitable for higher temperatures and heat-stable. For large forgings – easily formable and machinable. Corrosion-resistant in an environment of hydrogen at high pressure up to a temperature of approx. 320 °C and water steam up to a temperature of approx. 600 °C. Mainly for fastening energy and chemical equipment components, steam turbine rotors, shafts and compressor impeller wheels. Weldability is guaranteed conditionally (must be preheated to a temperature of 350-400 °C). Drawn and rolled bars d 12 mm – d 300 mm in stock, forged bars, blocks and hexagons to order.