13CrMo4-5 vs 18CrNiMo7-6: 43% composition overlap. Significantly different materials serving different application areas.
13CrMo4-5 vs 18CrNiMo7-6
Side-by-side chemical composition and mechanical property comparison.
Overview
13CrMo4-5
1.7335
Low-alloy Cr-Mo steel for elevated-temperature service. Good creep resistance up to 500°C. The standard grade for boiler tubes, headers, superheater tubes, and pressure equipment in power generation. Lower alloy content than 10CrMo9-10.
18CrNiMo7-6
1.6587
Premium Cr-Ni-Mo case-hardening steel for the most demanding gear applications. Excellent core toughness and hardenability for large cross-sections. The standard gear steel for wind turbines, heavy-duty gearboxes, and aerospace gearing.
| 13CrMo4-5 | 18CrNiMo7-6 | |
|---|---|---|
| Material Number | 1.7335 | 1.6587 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10028-2 | EN 10084 |
Chemical composition (wt%)
| Element | 13CrMo4-5 | 18CrNiMo7-6 | Overlap |
|---|---|---|---|
| C | 0.1–0.17% | 0.15–0.21% | Partial |
| Si | 0–0.35% | 0–0.4% | OK |
| Mn | 0.4–1% | 0.5–0.9% | OK |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 13CrMo4-5 | 18CrNiMo7-6 | Unit |
|---|---|---|---|
| tensile_strength | 440–590 | 1050–1350 | MPa |
| yield_strength | ≥ 290 | — | MPa |
| elongation | ≥ 20 | — | % |
Compatibility Assessment
13CrMo4-5 and 18CrNiMo7-6 have significantly different compositions (43% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 13CrMo4-5 the same as 18CrNiMo7-6?
13CrMo4-5 and 18CrNiMo7-6 have a 43% composition overlap. They are generally not directly interchangeable.
Can I replace 13CrMo4-5 with 18CrNiMo7-6?
Generally not recommended. The compositions differ significantly (43% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 13CrMo4-5 and 18CrNiMo7-6?
The main differences are in the following elements: C, Cr, Mo. 13CrMo4-5 is a Alloy Steel grade, while 18CrNiMo7-6 is a Alloy Steel grade.
Related Comparisons
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.