303 vs X2CrNiMoN22-5-3: 44% composition overlap. Significantly different materials serving different application areas.
303 vs X2CrNiMoN22-5-3
Side-by-side chemical composition and mechanical property comparison.
Overview
303
1.4305
Free-machining austenitic stainless steel — the most machinable of all austenitic grades. 0.15-0.35% S (as MnS inclusions) provides excellent chip-breaking. Trade-off: lower corrosion resistance than 304, poor weldability (hot cracking risk), and not suitable for cold forming. Used for high-volume automatic lathe parts: fittings, valves, screws, shafts, and precision components.
X2CrNiMoN22-5-3
1.4462
The most widely used duplex stainless steel worldwide (SAF 2205 / UNS S31803/S32205). Austenitic-ferritic microstructure provides ~2× yield strength of 304/316 (≥450 MPa) with excellent resistance to stress corrosion cracking, pitting (PREN 33-38), and intergranular corrosion. Service temperature -50°C to 300°C. Used for oil & gas production tubing, chemical processing vessels, desalination plants, pulp & paper digesters, heat exchangers, and bridge structures. Weldable with ER2209 filler.
| 303 | X2CrNiMoN22-5-3 | |
|---|---|---|
| Material Number | 1.4305 | 1.4462 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-3 | EN 10088-2 |
Chemical composition (wt%)
| Element | 303 | X2CrNiMoN22-5-3 | Overlap |
|---|---|---|---|
| C | 0–0.1% | ≤ 0.03% | OK |
| Si | 0–1% | ≤ 1% | OK |
| Mn | 0–2% | ≤ 2% | OK |
| P | 0–0.045% | ≤ 0.035% | OK |
Mechanical properties
| Property | 303 | X2CrNiMoN22-5-3 | Unit |
|---|---|---|---|
| tensile_strength | 500–750 | 650–880 | MPa |
| yield_strength | ≥ 190 | ≥ 450 | MPa |
| elongation | ≥ 35 | ≥ 25 | % |
Compatibility Assessment
303 and X2CrNiMoN22-5-3 have significantly different compositions (44% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 303 the same as X2CrNiMoN22-5-3?
303 and X2CrNiMoN22-5-3 have a 44% composition overlap. They are generally not directly interchangeable.
Can I replace 303 with X2CrNiMoN22-5-3?
Generally not recommended. The compositions differ significantly (44% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 303 and X2CrNiMoN22-5-3?
The main differences are in the following elements: S, Cr, Ni. 303 is a Stainless Steel grade, while X2CrNiMoN22-5-3 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.