10CrMo9-10 vs 8620 / 20NiCrMo2-2: 26% composition overlap. Significantly different materials serving different application areas.
10CrMo9-10 vs 8620 / 20NiCrMo2-2
Side-by-side chemical composition and mechanical property comparison.
Overview
10CrMo9-10
1.7380
Low-carbon Cr-Mo steel for elevated temperature pressure equipment. Excellent creep resistance up to 530°C. The standard grade for boiler tubes, headers, and pressure vessels in power generation and petrochemical industries.
8620 / 20NiCrMo2-2
1.6523
Nickel-chromium-molybdenum case-hardening steel. Good combination of core toughness and case hardness. The most widely used case-hardening steel in the US (AISI 8620). Used for gears, pinions, worm drives, king pins, and cross-shafts.
| 10CrMo9-10 | 8620 / 20NiCrMo2-2 | |
|---|---|---|
| Material Number | 1.7380 | 1.6523 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10028-2 | EN 10084 |
Chemical composition (wt%)
| Element | 10CrMo9-10 | 8620 / 20NiCrMo2-2 | Overlap |
|---|---|---|---|
| C | 0.08–0.14% | 0.17–0.23% | No overlap |
| Si | 0–0.5% | 0–0.4% | OK |
| Mn | 0.4–0.8% | 0.65–0.95% | Partial |
| P | 0–0.02% | 0–0.025% | OK |
Mechanical properties
| Property | 10CrMo9-10 | 8620 / 20NiCrMo2-2 | Unit |
|---|---|---|---|
| tensile_strength | 450–600 | 800–1100 | MPa |
| yield_strength | ≥ 280 | — | MPa |
| elongation | ≥ 18 | — | % |
Compatibility Assessment
10CrMo9-10 and 8620 / 20NiCrMo2-2 have significantly different compositions (26% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 10CrMo9-10 the same as 8620 / 20NiCrMo2-2?
10CrMo9-10 and 8620 / 20NiCrMo2-2 have a 26% composition overlap. They are generally not directly interchangeable.
Can I replace 10CrMo9-10 with 8620 / 20NiCrMo2-2?
Generally not recommended. The compositions differ significantly (26% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 10CrMo9-10 and 8620 / 20NiCrMo2-2?
The main differences are in the following elements: C, Mn, Cr, Mo. 10CrMo9-10 is a Alloy Steel grade, while 8620 / 20NiCrMo2-2 is a Alloy Steel grade.
Related Comparisons
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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.