316 / X5CrNiMo17-12-2 vs 409 / X2CrTi12: 64% composition overlap. Moderate differences, generally not direct substitutes.
316 / X5CrNiMo17-12-2 vs 409 / X2CrTi12
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.
409 / X2CrTi12
1.4512
Lowest-chromium ferritic stainless steel with Ti stabilization. Developed specifically for automotive exhaust systems as a cost-effective alternative to austenitic grades. Good oxidation resistance to ~800°C. Used for exhaust manifolds, catalytic converters, mufflers, and heat shields.
| 316 / X5CrNiMo17-12-2 | 409 / X2CrTi12 | |
|---|---|---|
| Material Number | 1.4401 | 1.4512 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | 316 / X5CrNiMo17-12-2 | 409 / X2CrTi12 | Overlap |
|---|---|---|---|
| C | 0–0.07% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–1% | OK |
| P | 0–0.045% | 0–0.04% | OK |
Mechanical properties
| Property | 316 / X5CrNiMo17-12-2 | 409 / X2CrTi12 | Unit |
|---|---|---|---|
| tensile_strength | 530–680 | 380–560 | MPa |
| yield_strength | ≥ 220 | ≥ 210 | MPa |
| elongation | ≥ 40 | ≥ 25 | % |
Compatibility Assessment
316 / X5CrNiMo17-12-2 and 409 / X2CrTi12 have moderate differences (64% 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 409 / X2CrTi12?
316 / X5CrNiMo17-12-2 and 409 / X2CrTi12 have a 64% composition overlap. They are generally not directly interchangeable.
Can I replace 316 / X5CrNiMo17-12-2 with 409 / X2CrTi12?
Generally not recommended. The compositions differ significantly (64% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 316 / X5CrNiMo17-12-2 and 409 / X2CrTi12?
The main differences are in the following elements: Cr. 316 / X5CrNiMo17-12-2 is a Stainless Steel grade, while 409 / X2CrTi12 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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