V4A-Typ, höher Mo-legiert, besonders säurebeständig
| Material number | 1.4438 |
| Designation | X2CrNiMo18-15-4 |
| AISI / ASTM | 317L |
| Standard | EN 10088-2 |
| Category | Austenitischer nichtrostender Stahl |
| Yield strength Re (min) | 240 N/mm² |
| Tensile strength Rm | 550–700 N/mm² |
| Elongation at break A (min) | 35 % |
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