20NiCrMo2-2 vs EN-GJS-400-15: 21% composition overlap. Significantly different materials serving different application areas.
20NiCrMo2-2 vs EN-GJS-400-15
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.
EN-GJS-400-15
5.3106
Ferritic ductile (spheroidal graphite) cast iron with minimum tensile strength 400 MPa and minimum elongation 15%. The most widely used ductile iron grade worldwide. Spheroidal graphite morphology achieved by magnesium treatment provides far superior ductility and impact resistance compared to grey iron. Used for water and gas pipes, valve bodies, pump housings, automotive components, gearbox housings, and general engineering castings. Equivalent to DIN GGG40, ASTM A536 60-40-18, JIS FCD400.
| 20NiCrMo2-2 | EN-GJS-400-15 | |
|---|---|---|
| Material Number | 1.6523 | 5.3106 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10084 | EN 1563 |
Chemical composition (wt%)
| Element | 20NiCrMo2-2 | EN-GJS-400-15 | Overlap |
|---|---|---|---|
| C | 0.17–0.23% | 3.2–3.8% | No overlap |
| Si | ≤ 0.4% | 2.2–2.8% | No overlap |
| Mn | 0.65–0.85% | 0.1–0.3% | No overlap |
| P | ≤ 0.025% | ≤ 0.05% | OK |
Mechanical properties
| Property | 20NiCrMo2-2 | EN-GJS-400-15 | Unit |
|---|---|---|---|
| tensile_strength | 700–1100 | ≥ 400 | MPa |
| yield_strength | ≥ 500 | ≥ 250 | MPa |
| elongation | ≥ 10 | ≥ 15 | % |
Compatibility Assessment
20NiCrMo2-2 and EN-GJS-400-15 have significantly different compositions (21% 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 EN-GJS-400-15?
20NiCrMo2-2 and EN-GJS-400-15 have a 21% composition overlap. They are generally not directly interchangeable.
Can I replace 20NiCrMo2-2 with EN-GJS-400-15?
Generally not recommended. The compositions differ significantly (21% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 20NiCrMo2-2 and EN-GJS-400-15?
The main differences are in the following elements: C, Si, Mn. 20NiCrMo2-2 is a Alloy Steel grade, while EN-GJS-400-15 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.