What material is x2crni18-9 material equivalent to?
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What Material Is X2CrNi18-9 Equivalent To? - A Complete Guide
In the stainless steel industry, X2CrNi18-9 is the designation for an austenitic stainless steel grade according to the European standard EN 10088-1.
Many engineers and procurement professionals often ask: "What is X2CrNi18-9 equivalent to?"
This article provides a detailed explanation of X2CrNi18-9's international equivalents, chemical composition, key properties, and typical applications to help with precise material selection and cross-standard sourcing.
1. Basic Information of X2CrNi18-9
| Item | Description |
|---|---|
| EN Material Number | 1.4307 |
| Steel Name | X2CrNi18-9 |
| International Equivalents | AISI 304L / UNS S30403 / SUS304L |
| Standards | DIN EN 10088-1 / EN 10088-2 |
Naming Breakdown:
🔹X: Stainless steel
🔹2: Maximum carbon content around 0.02% (actual standard limit ≤ 0.03%)
🔹Cr18: Approximately 18% Chromium
🔹Ni9: Approximately 9% Nickel
✅ In summary, X2CrNi18-9 is essentially the low-carbon version of 304 stainless steel, commonly referred to as 304L stainless steel.
2. x2crni18-9 stainless steel Chemical Composition (According to EN 10088-1)
| Element | Content Range (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 17.5–19.5 |
| Nickel (Ni) | 8.0–10.5 |
| Nitrogen (N) | ≤ 0.11 |
🔹 Compared to standard 304 (1.4301), the key difference in X2CrNi18-9 is the lower carbon content, which significantly improves resistance to intergranular corrosion, especially after welding, without requiring post-weld heat treatment.
3.x2crni18-9 stainless steel Mechanical Properties (Solution-Annealed Condition)
| Property | Requirement |
|---|---|
| Tensile Strength Rm | 450–700 MPa |
| Yield Strength Rp0.2 | ≥ 190 MPa |
| Elongation A50 | ≥ 45% |
| Brinell Hardness HB | ≤ 215 |
✅ Excellent toughness: Maintains good ductility and impact resistance even at cryogenic temperatures down to -196°C.
✅ Good workability: Suitable for cold forming, deep drawing, bending, and other forming processes.
4. x2crni18-9 stainless steel Key Properties
🔹Excellent Corrosion Resistance
Provides good resistance to atmospheric corrosion, fresh water, food products, and mildly aggressive chemicals.
🔹Outstanding Weldability
Compatible with all conventional welding methods (TIG, MIG, MAG, SMAW), with no need for post-weld heat treatment.
🔹Low Magnetic Permeability
Non-magnetic in solution-annealed condition; slight magnetism may develop after cold working.
🔹Resistance to Intergranular Corrosion
The low carbon content greatly suppresses carbide precipitation, minimizing the risk of intergranular corrosion after welding or high-temperature exposure.
5. x2crni18-9 stainless steel Applications
| Industry | Application Examples |
|---|---|
| Food Processing | Dairy equipment, brewing systems, kitchen surfaces, hygienic piping |
| Pharmaceutical Industry | Reactors, clean piping systems, medical devices |
| Chemical Industry | Storage tanks for neutral/low-aggression chemicals, heat exchangers, pipelines |
| Architecture | Building facades, railings, interior structures |
| Energy Sector | LNG systems, cryogenic piping assemblies |
