1.7938
Superalloy1.7938
DIN special steel grade 1.7938.
Chemical Composition (%)
| NI | 55 |
|---|---|
| CR | 15 |
| MO | 10 |
| FE | 25 |
| CO | 20 |
| C | 0.15 |
Mechanical Properties
Tensile:≥500 MPa;Yield:≥300 MPa;Elongation:≥18%
Equivalent Grades
DIN 1.7938
Applications
General engineering / special service
Available Forms
Bar,Plate
Uses
Cobalt alloy with exceptional wear, galling and high-temperature corrosion resistance. Used in cutting tools, valve seats, dental and orthopaedic implants, gas-turbine parts.
Heat Treatment
Solution treated and aged (≈650–800 °C) for wear alloys; many Stellite-type grades are used as-cast or hardfaced.
Precautions
Very abrasive to tooling when hardfaced; machine in annealed condition where possible. Excellent galling resistance reduces need for lubrication.
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