DIN 17210:1986 15Cr3 Steel: Specifications & Listings
DIN 17210:1986 15Cr3: Low carbon chromium case hardening steel with good surface hardness after carburising. Used for small gears, pins, bushings and lightly stressed fasteners.
Low-alloy chromium case-hardening (carburizing) steel; gears, shafts, pins, and machine components requiring a hard wear-resistant carburized surface with a tough core
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.