20NiCrMo2-2 vs 35NiCr6: 48% composition overlap. Significantly different materials serving different application areas.
20NiCrMo2-2 vs 35NiCr6
Side-by-side chemical composition and mechanical property comparison.
Overview
20NiCrMo2-2
1.6523
Nickel-chromium-molybdenum case-hardening steel — the base grade of the 8620 family. Good weldability, toughness, and machinability. Case hardness up to HRC 60–63 with core strength 700–1100 MPa after carburizing and quenching. Used for gears, shafts, pinions, piston pins, and camshafts in automotive, gearbox, and general mechanical engineering. Equivalent to AISI 8620 and BS 805M20.
35NiCr6
1.5815
Nickel-chromium quenched and tempered steel with 1.2–1.6% Ni and 0.9–1.1% Cr for high strength and excellent impact toughness. Good hardenability for uniform properties in medium cross-sections. Used for heavy-duty engine parts, crankshafts, gears, shafts, piston rods, and bolts. Important grade in aerospace (AIR 9160/C as 35NC6) and heavy mechanical engineering.
| 20NiCrMo2-2 | 35NiCr6 | |
|---|---|---|
| Material Number | 1.6523 | 1.5815 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10084 | EN 10083-3 |
Chemical composition (wt%)
| Element | 20NiCrMo2-2 | 35NiCr6 | Overlap |
|---|---|---|---|
| C | 0.17–0.23% | 0.3–0.37% | No overlap |
| Si | ≤ 0.4% | ≤ 0.4% | OK |
| Mn | 0.65–0.85% | 0.6–0.9% | OK |
| P | ≤ 0.025% | ≤ 0.025% | OK |
Mechanical properties
| Property | 20NiCrMo2-2 | 35NiCr6 | Unit |
|---|---|---|---|
| tensile_strength | 700–1100 | 880–1080 | MPa |
| yield_strength | ≥ 500 | ≥ 740 | MPa |
| elongation | ≥ 10 | ≥ 12 | % |
Compatibility Assessment
20NiCrMo2-2 and 35NiCr6 have significantly different compositions (48% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 20NiCrMo2-2 the same as 35NiCr6?
20NiCrMo2-2 and 35NiCr6 have a 48% composition overlap. They are generally not directly interchangeable.
Can I replace 20NiCrMo2-2 with 35NiCr6?
Generally not recommended. The compositions differ significantly (48% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 20NiCrMo2-2 and 35NiCr6?
The main differences are in the following elements: C, Cr, Ni. 20NiCrMo2-2 is a Alloy Steel grade, while 35NiCr6 is a Alloy Steel grade.
View full data for each material:
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.