Corrosion Resistant Stainless Steels
The category of austenitic corrosion resistant stainless steels primarily includes materials with higher alloy content (e.g. nickel, chrome and molybdenum). They are resistant to different types of corrosion caused by wet chemical influences, and are still able to maintain an austenitic face-centered cubic matrix. This creates a range of highly versatile stainless steels.
Austenitic Ferritic Steels
| DMV designation | Nearest equivalent standard | Typical chemical composition 1) | Density | Min. mechanical prop. at RT | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UNS | EN | Cmax | Cr | Ni | Mo | Cu | others | Rp0.2 Yield Strength | Rm Tensile Strength | |||||
| g/cm3 | lb/in3 | MPa | ksi | MPa | ksi | |||||||||
| DMV 18.5 | S31500 | 1.4424 | 0.03 | 18.5 | 4.8 | 2.7 | Si 1.7; N 0.1 | 7.8 | 0.28 | 440 | 64 | 630 | 92 | |
| DMV 22.5 | S31803 | 1.4462 | 0.03 | 22.0 | 5.5 | 3.0 | N 0.17 2) | 7.8 | 0.28 | 450 | 65 | 620 | 90 | |
| DMV 25.7 | S31260 | 0.03 | 25.0 | 6.5 | 3.0 | 0.5 | N 0.20; W 0.5 | 7.8 | 0.28 | 450 | 65 | 690 | 100 | |
| DMV 25.7 Cu | S32550 | 1.4507 | 0.03 | 25.0 | 7.0 | 3.5 | 1.5 | N 0.22 2) | 7.8 | 0.28 | 550 | 80 | 760 | 110 |
| DMV 25.7 N | S32760 | 1.4501 | 0.03 | 25.0 | 7.0 | 4.0 | 0.5 | N 0.25; W 0.5 2) | 7.8 | 0.28 | 550 | 80 | 750 | 109 |
| DMV 25.7 NS | S32750 | 1.4410 | 0.03 | 25.5 | 7.0 | 4.0 | 0.25 | N 0.3 2) | 7.8 | 0.28 | 550 | 80 | 750 | 109 |
| DMV 29.7 | S32906 | 1.4477 | 0.03 | 29.0 | 7.0 | 2.3 | < 0.80 | N 0.35 2) | 7.8 | 0.28 | 650 | 94 | 800 | 116 |
1) All figures in weight percentage. In case of order, the limits of the order specification will apply.
2) Min PRE value is controlled.