Application Segments


Melting Route

Airmelted + ESR

Product Description

BÖHLER P504 is a wrought nitrogen strengthened 21chromium—10nickel—3manganese—2.5molybdenum stainless steel for surgical implants. It is a highly corrosion resistant non-magnetisable stainless austenitic steel – nitrogen alloyed – resistant to intergranular corrosion. Compared to standard Cr-Ni-Mo steel, it offers increased strength and thus also better fatigue properties. The steel is produced as remelt grade and thus fulfils the usual requirements for steel purity as specified for implant material.

Technical Specifications

Material Numbers

REX 734 S31675


F1586 ISO 5832-9

Chemical Composition

Chemical composition (average %)
max. 0.08 max. 0.75 2.00 to 4.25 max. 0.025 max. 0.01 19.5 to 22.0 2.0 to 3.0 9.0 to 11.0 max. 0.25 0.25 to 0.80 0.25 to 0.50


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