EN 1.4301 vs EN 1.4541 stainless steel
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EN 1.4301 vs EN 1.4541 Stainless Steel: What's the Difference?
When selecting stainless steel for industrial, chemical, or structural use, EN 1.4301 and EN 1.4541 are two of the most commonly referenced austenitic grades. Understanding their composition, mechanical properties, and temperature resistance is essential for choosing the right material.
What is 1.4301 Stainless Steel?
EN 1.4301, also known as X5CrNi18-10 or AISI 304, is the world's most widely used austenitic stainless steel. It contains approximately 18% chromium and 8–10% nickel, offering excellent corrosion resistance, formability, and weldability. It is a general-purpose grade, used in kitchenware, tanks, pipelines, architecture, and many industrial sectors.
What is equivalent of 1.4301?
AISI/ASTM: 304
UNS: S30400
JIS: SUS304
What is 1.4541 Stainless Steel?
EN 1.4541, also known as X6CrNiTi18-10 or AISI 321, is a titanium-stabilized austenitic stainless steel. It is developed to offer better intergranular corrosion resistance during and after welding, especially at elevated temperatures. The addition of titanium (Ti ≥ 5×C) binds carbon and prevents chromium carbide precipitation.
What is 1.4541 steel equivalent to?
AISI/ASTM: 321
UNS: S32100
JIS: SUS321
1.4541 vs 1.4301: Chemical Composition
| Element | 1.4301 (304) | 1.4541 (321) |
|---|---|---|
| Carbon (C) | ≤ 0.07% | ≤ 0.08% |
| Chromium (Cr) | 17.5–19.5% | 17.0–19.0% |
| Nickel (Ni) | 8.0–10.5% | 9.0–12.0% |
| Titanium (Ti) | – | ≥ 5 × C (typically ~0.5%) |
| Manganese (Mn) | ≤ 2.0% | ≤ 2.0% |
| Silicon (Si) | ≤ 1.0% | ≤ 1.0% |
1.4541 vs 1.4301: Mechanical Properties (Annealed)
| Property | 1.4301 (304) | 1.4541 (321) |
|---|---|---|
| Tensile Strength (Rm) | 500–750 MPa | 500–750 MPa |
| Yield Strength (Rp0.2) | ≥ 190 MPa | ≥ 190 MPa |
| Elongation (A5) | ≥ 45% | ≥ 40% |
| Hardness (HB) | ≤ 215 | ≤ 215 |
Density |
7.9 g/cm³ | 7.9 g/cm³ |
1.4541 vs 1.4301: Maximum Operating Temperature
1.4541 (AISI 321) is better for welded parts and high-temperature service, while 1.4301 is suitable for low to medium temperature general applications.
| Grade | Max. Continuous Temperature | Notes |
|---|---|---|
| 1.4301 | ~870°C (intermittent), but risk of sensitization above 425°C | Carbide precipitation risk without stabilization |
| 1.4541 | Up to 850°C continuous | Stable against intergranular corrosion at high temp |
What is the difference between 1.4541 and 1.4301 material?
The main difference between 1.4541 (AISI 321) and 1.4301 (AISI 304) stainless steel lies in their stabilization against intergranular corrosion. 1.4541 is titanium-stabilized, making it more resistant to carbide precipitation during welding and high-temperature service, whereas 1.4301 lacks this stabilization and may become sensitive to corrosion when exposed to temperatures above 425°C. This makes 1.4541 better suited for welded structures and elevated-temperature applications, while 1.4301 is ideal for general-purpose, low-to-medium temperature environments.
Need EN 1.4301 or 1.4541 Stainless Steel?
We supply both EN 1.4301 (304) and EN 1.4541 (321) in sheet, coil, pipe, bar, and tube forms with full EN/ASTM certifications, MTC, and customized cutting services. Contact us now for free quotes and technical support.
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