100Cr6 is the same material your supplier may list as AISI 52100 or JIS SUJ2. This page maps the designations across standards and gives the ISO P-group machining starting point, brand-neutral.
| System | Designation |
|---|---|
| EN (EU) | 100Cr6 |
| Werkstoffnummer | 1.3505 |
| AISI / ASTM / UNS (US) | AISI 52100 (UNS G52986) |
| JIS (Japan) | SUJ2 |
Compiled from the public standard designation systems (EN 10027, SAE/AISI, ASTM, UNS, JIS). Entries marked “nearest” are the closest commonly-cited counterpart, not a drop-in equivalent. Always verify against the material certificate.
Spheroidise-annealed bearing steel turns fine at alloy-steel data; hardened to 60+ HRC it is classic hard-turning territory for CBN at H-group data.
| ISO group | Starting Vc (coated carbide, turning) | Feed fn |
|---|---|---|
| P P · Steel | 150–350 m/min · 490–1150 sfm | 0.1–0.5 mm/rev · .004–.020 ipr |
Group-level starting range from our speeds & feeds guide; convert to RPM with the speeds & feeds calculator. Condition, subgroup and operation shift the number — the material page has the detail: ISO P · Bearing steel.
Related materials: 42CrMo4 / AISI 4140 · 25CrMo4 / AISI 4130 · 34CrNiMo6 / AISI 4340 · 51CrV4 / AISI 6150 · 30CrNiMo8 / 1.6580 · 31CrMoV9 / 1.8519
Are you overpaying on the inserts you run in 100Cr6? Paste your insert list and get a cost audit in about 30 seconds: cross-brand equivalents at the same ISO application position, and where you are likely overpaying. No signup, no sales call.
100Cr6 (Werkstoffnummer 1.3505) corresponds to AISI 52100 (UNS G52986). In JIS terms the counterpart is SUJ2.
It is an ISO P-group material, so the starting window is 150–350 m/min · 490–1150 sfm at 0.1–0.5 mm/rev · .004–.020 ipr for coated-carbide turning, adjusted for condition and operation. For a grounded, brand-neutral pick — grade, geometry and cutting data across 15 brands — ask the advisor.
They designate the same composition under different systems, but the drawing standard governs: certificates, tolerances and delivery-condition requirements differ between standards even for equivalent chemistry. Substitute only with the certificate in hand.
Knowing the material is half the job; picking the grade and cutting data for the operation is the other half. That is what the advisor does, grounded in catalog data and honest when there is no verified match.