316 / X5CrNiMo17-12-2 vs X2CrNiN18-7: 60% composition overlap. Moderate differences, generally not direct substitutes.
316 / X5CrNiMo17-12-2 vs X2CrNiN18-7
Side-by-side chemical composition and mechanical property comparison.
Overview
316 / X5CrNiMo17-12-2
1.4401
Standard-carbon austenitic stainless steel with molybdenum. Higher C than 316L (max 0.07% vs 0.03%) giving slightly higher strength. Same corrosion resistance as 316L. Used where welding is not required or post-weld solution annealing is possible.
X2CrNiN18-7
1.4318
Nitrogen-alloyed work-hardening austenitic — AISI 301LN. Lower Ni (6-8%) than 304 makes it metastable: cold work transforms austenite to martensite → UTS up to 1400 MPa in full-hard condition. N addition compensates low C for corrosion and strength. Used for rail car bodies, springs, structural parts requiring high strength-to-weight ratio, and architectural cladding.
| 316 / X5CrNiMo17-12-2 | X2CrNiN18-7 | |
|---|---|---|
| Material Number | 1.4401 | 1.4318 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 316 / X5CrNiMo17-12-2 | X2CrNiN18-7 | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | — | — |
Mechanical properties
| Property | 316 / X5CrNiMo17-12-2 | X2CrNiN18-7 | Unit |
|---|---|---|---|
| tensile_strength | 530–680 | 550–750 | MPa |
| yield_strength | ≥ 220 | ≥ 250 | MPa |
| elongation | ≥ 40 | ≥ 40 | % |
Compatibility Assessment
316 / X5CrNiMo17-12-2 and X2CrNiN18-7 have moderate differences (60% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 316 / X5CrNiMo17-12-2 the same as X2CrNiN18-7?
316 / X5CrNiMo17-12-2 and X2CrNiN18-7 have a 60% composition overlap. They are generally not directly interchangeable.
Can I replace 316 / X5CrNiMo17-12-2 with X2CrNiN18-7?
Generally not recommended. The compositions differ significantly (60% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 316 / X5CrNiMo17-12-2 and X2CrNiN18-7?
The main differences are in the following elements: Ni, N. 316 / X5CrNiMo17-12-2 is a Stainless Steel grade, while X2CrNiN18-7 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.
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