Lean Duplex 2101 / X2CrMnNiN21-5-1 vs Lean Duplex 2304: Both lean duplex grades — different Ni economy strategies
Lean Duplex 2101 / X2CrMnNiN21-5-1 vs Lean Duplex 2304
Side-by-side chemical composition and mechanical property comparison.
Overview
Lean Duplex 2101 / X2CrMnNiN21-5-1
1.4162
Lean duplex stainless steel with minimal Ni and Mo — the most cost-effective duplex grade. Uses Mn and N instead of expensive Ni for austenite stability. Double the yield strength of 304 (450 MPa vs 190 MPa). Used as a direct replacement for 304/316L where higher strength or better SCC resistance is needed.
Lean Duplex 2304
1.4362
Lean duplex stainless steel with low Mo content. More economical than 2205 with better corrosion resistance than 304/316L. Developed for construction, water treatment, and storage tanks where full duplex properties are not required.
| Lean Duplex 2101 / X2CrMnNiN21-5-1 | Lean Duplex 2304 | |
|---|---|---|
| Material Number | 1.4162 | 1.4362 |
| Category | Stainless Steel | Stainless Steel |
| Standard | EN 10088-2 | EN 10088-2 |
Chemical composition (wt%)
| Element | Lean Duplex 2101 / X2CrMnNiN21-5-1 | Lean Duplex 2304 | Overlap |
|---|---|---|---|
| C | 0–0.04% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 4–6% | 0–2% | No overlap |
| P | 0–0.04% | 0–0.035% | OK |
Mechanical properties
| Property | Lean Duplex 2101 / X2CrMnNiN21-5-1 | Lean Duplex 2304 | Unit |
|---|---|---|---|
| tensile_strength | 650–850 | 600–830 | MPa |
| yield_strength | ≥ 450 | ≥ 400 | MPa |
| elongation | ≥ 30 | ≥ 25 | % |
Compatibility Assessment
2101 uses Mn+N to replace Ni (only 1.5% Ni vs 4.5%). 2304 has more Ni for better ductility and higher PREN. 2101 is the cheapest duplex option; 2304 is closer to 2205 in corrosion resistance.
Frequently Asked Questions
Is Lean Duplex 2101 / X2CrMnNiN21-5-1 the same as Lean Duplex 2304?
Lean Duplex 2101 / X2CrMnNiN21-5-1 and Lean Duplex 2304 have a 70% composition overlap. Both lean duplex grades — different Ni economy strategies
Can I replace Lean Duplex 2101 / X2CrMnNiN21-5-1 with Lean Duplex 2304?
In many cases, yes. The compositions overlap significantly (70%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between Lean Duplex 2101 / X2CrMnNiN21-5-1 and Lean Duplex 2304?
The main differences are in the following elements: Mn, Cr, Ni, Cu. Lean Duplex 2101 / X2CrMnNiN21-5-1 is a Stainless Steel grade, while Lean Duplex 2304 is a Stainless Steel grade.
Related Comparisons
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