301 vs X10CrMoVNb9-1: 31% composition overlap. Significantly different materials serving different application areas.
301 vs X10CrMoVNb9-1
Side-by-side chemical composition and mechanical property comparison.
Overview
301
1.4310
Austenitic stainless steel with the highest work-hardening rate of all 300-series grades. Lower Cr and Ni (17/7 vs 18/9 for 304) makes it metastable — cold working induces martensite transformation for extreme strength (UTS >1300 MPa in full-hard temper). THE stainless spring steel. Used for stainless springs, washers, clips, structural components requiring high strength + corrosion resistance, and railway car bodies.
X10CrMoVNb9-1
1.4903
High-chromium creep-resistant martensitic steel equivalent to ASTM Grade 91 (P91/T91/F91). V and Nb additions with controlled N provide exceptional creep rupture strength at temperatures up to 580°C. The foundation steel of modern ultra-supercritical (USC) power plants worldwide. Used for main steam pipes, boiler headers, superheater tubes, and high-temperature pressure components in fossil and nuclear power generation.
| 301 | X10CrMoVNb9-1 | |
|---|---|---|
| Material Number | 1.4310 | 1.4903 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10216-2 |
Chemical composition (wt%)
| Element | 301 | X10CrMoVNb9-1 | Overlap |
|---|---|---|---|
| C | 0.05–0.15% | 0.08–0.12% | OK |
| Si | 0–2% | 0.2–0.5% | OK |
| Mn | 0–2% | 0.3–0.6% | OK |
| P | 0–0.045% | ≤ 0.02% | OK |
Mechanical properties
| Property | 301 | X10CrMoVNb9-1 | Unit |
|---|---|---|---|
| tensile_strength | 520–720 | 585–780 | MPa |
| yield_strength | ≥ 205 | ≥ 415 | MPa |
| elongation | ≥ 45 | ≥ 20 | % |
Compatibility Assessment
301 and X10CrMoVNb9-1 have significantly different compositions (31% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 301 the same as X10CrMoVNb9-1?
301 and X10CrMoVNb9-1 have a 31% composition overlap. They are generally not directly interchangeable.
Can I replace 301 with X10CrMoVNb9-1?
Generally not recommended. The compositions differ significantly (31% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 301 and X10CrMoVNb9-1?
The main differences are in the following elements: Cr. 301 is a Stainless Steel grade, while X10CrMoVNb9-1 is a Stainless 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.