316L vs X8CrNiS18-9: 40% composition overlap. Significantly different materials serving different application areas.
316L vs X8CrNiS18-9
Side-by-side chemical composition and mechanical property comparison.
Overview
316L
1.4404
Low-carbon austenitic stainless steel with molybdenum addition. Superior corrosion resistance to 304, especially against chlorides and pitting. Standard choice for chemical processing, marine, medical implants, and pharmaceutical equipment.
X8CrNiS18-9
1.4305
THE free-cutting austenitic stainless — AISI 303. Sulfur 0.15-0.35% for short-breaking chips and excellent machinability. Not weldable (hot cracking risk from S). Reduced corrosion resistance vs 304 due to sulfide inclusions. Used for high-volume CNC screw machine production of fittings, shafts, bushings, valves, and any turned stainless part where machining cost dominates.
| 316L | X8CrNiS18-9 | |
|---|---|---|
| Material Number | 1.4404 | 1.4305 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-3 |
Chemical composition (wt%) — Pro
| Element | 316L | X8CrNiS18-9 | Overlap |
|---|---|---|---|
| C | 0–0.03% | 0–0.1% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | — | — |
| S | |||
| Cr | |||
| Mo | |||
| Ni | |||
| Cu | |||
| N |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | 316L | X8CrNiS18-9 | Unit |
|---|---|---|---|
| Tensile Strength | 520–680 | 500–750 | MPa |
| Yield Strength | ≥ 220 | ≥ 190 | MPa |
| Elongation | ≥ 40 | ≥ 35 | % |
| Hardness HB | |||
| Elastic Modulus | |||
| Density | |||
| Tensile Strength | |||
| Yield Strength Rp0.2 | |||
| Elongation A | |||
| Hardness HB |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
316L and X8CrNiS18-9 have significantly different compositions (40% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 316L the same as X8CrNiS18-9?
316L and X8CrNiS18-9 have a 40% composition overlap. They are generally not directly interchangeable.
Can I replace 316L with X8CrNiS18-9?
Generally not recommended. The compositions differ significantly (40% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 316L and X8CrNiS18-9?
The main differences are in the following elements: S, Cr, Ni. 316L is a Stainless Steel grade, while X8CrNiS18-9 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.