1.3964
Material search
Material description
Material 1.3964 is a non-magnetisable austenitic steel which, thanks to its high content of chromium and nickel and its additional manganese and molybdenum content, offers high tensile strength and a high yield strength.
The selected alloying elements make 1.3964 resistant to intergranular corrosion. In addition, the steel has excellent resistance to pitting, crevice corrosion and stress corrosion cracking in seawater as well as in chloride-containing media, cold nitric acid and organic acid solutions.
An overview of the properties of 1.3964:
- Extremely good corrosion resistance (including in seawater and coastal areas)
- High yield strength and tensile strength
- Non-magnetic quality
Applications
- Non-magnetic components
- Shipbuilding
Chemical composition in %
| SEW 390 | |
|---|---|
| C | ≤ 0.030 |
| Si | ≤ 1.0 |
| Mn | 4.0 – 6.0 |
| P | ≤ 0.025 |
| S | ≤ 0.010 |
| N | 0.20 – 0.35 |
| Cr | 20.0 – 21.5 |
| Mo | 3.0 – 3.5 |
| Ni | 15.0 – 17.0 |
| Nb | ≤ 0.25 |
Mechanical properties
| Solution annealed | Bar/forging D ≤ 300 mm |
|---|---|
| Rm (N/mm2) | 700 – 950 |
| Rp 0.2 (N/mm2) | ≥ 365 |
| A (%) | l ≥ 35, q/t ≥ 30 |
| Av (J)* | l ≥ 85, q/t ≥ 55 |
The specified values are non-binding guide values.