100Cr6 vs 17CrNiMo6: 14% composition overlap. Significantly different materials serving different application areas.
100Cr6 vs 17CrNiMo6
Side-by-side chemical composition and mechanical property comparison.
Overview
100Cr6
1.3505
High-carbon chromium bearing steel. The most widely used bearing steel worldwide. Extremely high hardness and wear resistance after heat treatment. Standard for ball and roller bearings, precision shafts, and measuring instruments.
17CrNiMo6
1.6587
Premium CrNiMo case hardening steel for demanding gear applications. Ni 1.2-1.5% + Mo 0.25-0.35% give excellent core toughness and deep hardenability — suitable for large gears up to 400mm ruling section. Surface HRC 60-63 after carburizing. THE wind turbine gearbox steel. Also used for large industrial gearboxes, mining equipment, and heavy truck transmissions.
| 100Cr6 | 17CrNiMo6 | |
|---|---|---|
| Material Number | 1.3505 | 1.6587 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN ISO 683-17 | EN 10084 |
Chemical composition (wt%)
| Element | 100Cr6 | 17CrNiMo6 | Overlap |
|---|---|---|---|
| C | 0.93–1.05% | 0.15–0.21% | No overlap |
| Si | 0.15–0.35% | 0–0.4% | OK |
| Mn | 0.25–0.45% | 0.5–0.9% | No overlap |
| P | 0–0.025% | — | — |
Mechanical properties
| Property | 100Cr6 | 17CrNiMo6 | Unit |
|---|---|---|---|
| hardness_hrc | 60–66 | 60–63 | HRC |
| hardness_hb | ≤ 223 | — | HB |
| e_modulus | ≥ 210 | ≥ 210 | GPa |
Compatibility Assessment
100Cr6 and 17CrNiMo6 have significantly different compositions (14% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 100Cr6 the same as 17CrNiMo6?
100Cr6 and 17CrNiMo6 have a 14% composition overlap. They are generally not directly interchangeable.
Can I replace 100Cr6 with 17CrNiMo6?
Generally not recommended. The compositions differ significantly (14% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 100Cr6 and 17CrNiMo6?
The main differences are in the following elements: C, Mn, Cr, Mo. 100Cr6 is a Alloy Steel grade, while 17CrNiMo6 is a Alloy Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.