T670

Product Description

Aviation and aerospace industries, nuclear, turbine and general mechanical engineering.

Property Features

Creep resistant martensitic precipitation hardenable Cr-Ni-Mo-Cu-steel with high strength and good toughness. Usual upper temperature limit for continuous operating at 370°C.
BÖHLER T670 EXTRA is being refined by the remelting process (ESR/VAR).

Technical Specifications

Material Numbers


520B, Alloy FV520 1.4594 S45000 X5CrNiMoCuNb14-5


Chemical Composition

0.05 0.25 0.40 14.00 1.50 5.20 1.60 0.25

Chemical composition (average %)

Available product shapes

  • Flat Bar
  • Long Products

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