EN 1.4306 stainless steel.pdf
Jun 09, 2025
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What Is EN 1.4306 Stainless Steel?
EN 1.4306 is a European standard stainless steel grade with ultra-low carbon content (≤0.030%), designed to resist intergranular corrosion after welding. It is a special version of the widely used EN 1.4301 (304), with enhanced weldability and stability.
EN 1.4306 Stainless Steel Chemical Composition
| Element | Content (%) |
|---|---|
| C | ≤ 0.030 |
| Cr | 17.0 – 19.5 |
| Ni | 10.0 – 12.0 |
| Mn | ≤ 2.0 |
| Si | ≤ 1.0 |
| P | ≤ 0.045 |
| S | ≤ 0.015 |
| N | ≤ 0.11 |
EN 1.4306 Stainless Steel Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 500 – 700 MPa |
| Yield Strength (Rp0.2) | ≥ 190 MPa |
| Elongation (A5) | ≥ 45% |
| Hardness (HB) | ≤ 215 |
| Operating Temperature | -196°C to 450°C (typical) |
What is the difference between 1.4306 and 1.4301?
EN 1.4306 has a lower carbon content than 1.4301, offering better corrosion resistance after welding. It is also more suited for precision fabrication and clean-room environments.
Is 1.4306 the same as 304L?
Yes. EN 1.4306 is the European equivalent of AISI 304L, although 1.4306 often has higher nickel content (10–12%), improving corrosion resistance.
Can EN 1.4306 be used in chloride environments?
It can tolerate low chloride concentrations, but for high chloride exposure (e.g., seawater), 316L or duplex stainless steels are more suitable.
Is EN 1.4306 magnetic?
No, it is non-magnetic in the annealed condition, though it may become slightly magnetic after cold working.
GNEE offers certified EN 1.4306 stainless steel sheets, pipes, and fittings that meet EN, ASTM, and ISO standards. All products undergo PMI testing, intergranular corrosion testing (ASTM A262), and ultrasonic inspection.
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