What is the equivalent of 1.4306 stainless steel?
1.4306 / AISI 304L / X2CrNi19-11. 1.4306 - AISI 304L is essentially a more highly alloyed version of 1.4307. Due to the slightly higher chromium and notably higher nickel content, 1.4306 - AISI 304L is more corrosion resistant than 1.4307.
1. Overview
EN 1.4306 and EN 1.4307 are both low-carbon versions of EN 1.4301 (AISI 304) austenitic stainless steel.
1.4306 has an extra-low carbon content (max 0.03%) and a higher nickel range to improve corrosion resistance, particularly in cold climates and aggressive environments.
1.4307 also has a low carbon content (max 0.03%) but a slightly lower nickel range, making it more economical for general welded structures.
Both grades are widely used in applications requiring excellent corrosion resistance, good weldability, and compliance with food and hygiene standards.
2. Chemical Composition Comparison
1.4306 contains more nickel, which enhances corrosion resistance, especially in low-temperature and chloride environments.
| Element | 1.4306 (%) | 1.4307 (%) |
|---|---|---|
| C | ≤ 0.030 | ≤ 0.030 |
| Si | ≤ 1.00 | ≤ 1.00 |
| Mn | ≤ 2.00 | ≤ 2.00 |
| P | ≤ 0.045 | ≤ 0.045 |
| S | ≤ 0.015 | ≤ 0.015 |
| Cr | 17.5 – 19.5 | 17.5 – 19.5 |
| Ni | 10.0 – 12.0 | 8.0 – 10.5 |
| N | ≤ 0.11 | ≤ 0.11 |
| Fe | Balance | Balance |
3. Mechanical Properties (Annealed Condition)
| Property | 1.4306 | 1.4307 |
|---|---|---|
| Tensile Strength (MPa) | ≥ 520 | ≥ 480 |
| Yield Strength 0.2% (MPa) | ≥ 210 | ≥ 170 |
| Elongation (%) | ≥ 45 | ≥ 40 |
| Hardness (HB) | ≤ 215 | ≤ 215 |
| Density (g/cm³) | 7.93 | 7.93 |
4. Corrosion Resistance
1.4306: Superior pitting and crevice corrosion resistance due to higher nickel; ideal for cold environments and chloride-containing atmospheres.
1.4307: Excellent general corrosion resistance, suitable for most welded stainless steel structures in mild to moderate environments.
5. Applications
| Industry | 1.4306 Applications | 1.4307 Applications |
|---|---|---|
| Food & Beverage | Dairy tanks, brewing equipment, refrigerated storage | Welded food processing equipment |
| Chemical | Piping for aggressive media, storage tanks in cold regions | Welded chemical tanks and pipelines |
| Architecture | Exterior cladding in marine/coastal areas | Structural components, building interiors |
| Marine (mild) | Welded boat fittings, deck hardware | General marine equipment in mild conditions |
Which has better corrosion resistance – 1.4306 or 1.4307?
1.4306 generally has better corrosion resistance due to its higher nickel content, especially in chloride or low-temperature environments.
Is 1.4306 more expensive than 1.4307?
Yes. Higher nickel content makes 1.4306 more costly. 1.4307 is more economical for applications where extreme corrosion resistance is not necessary.
Can 1.4306 and 1.4307 be welded easily?
Yes. Both grades have excellent weldability due to low carbon content, minimizing the risk of intergranular corrosion after welding.
Are 1.4306 and 1.4307 suitable for food-grade applications?
Yes. Both meet hygienic standards and are safe for food contact. 1.4306 is preferred in harsher cleaning or sanitizing environments.
Why Source from GNEE?
At GNEE, we supply EN 1.4306 and EN 1.4307 stainless steel plates, sheets, coils, pipes, and bars with:
EN 10204 3.1 mill certificates
Custom sizes & surface finishes (2B, BA, No.4, HL, mirror)
Competitive pricing and short lead times
Global delivery and technical support
📩 Contact us now for a free consultation and quotation. Our experts will help you select the most cost-effective grade for your project.
