AISI 316L Edelstahl (UNS S31603): Marine-Grade Properties
ASTM A240/A276 · Published: 2026-05-27 · Updated: July 2026
AISI 316L (UNS S31603) is a low-carbon (≤0.03%) austenitic stainless steel with 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. The molybdenum addition provides superior resistance to pitting and crevice corrosion in chloride environments,...
AISI 316L (UNS S31603) ist ein niedrig-carbon (≤0.03%) austenitic stainless steel mit 16-18% chromium, 10-14% nickel, und 2-3% molybdenum. Der molybdenum addition provides superior widerstand zu pitting und crevice corrosion in chloride environments, making es der material von choice für marine, pharmaceutical, und chemical processing ausrüstung. Der 'L' designation prevents chromium carbide precipitation während welding, eliminating der brauchen für post-weld annealing. Norm material für surgical implants, medical devices, offshore platforms, und coastal architecture.
Quick Facts
| Kategorie | Edelstahl |
| Norm | ASTM A240/A276 |
| Density | 8.00 g/cm³ |
| Yield Strength | 170 MPa (25 ksi) |
| Tensile Strength | 485 MPa (70 ksi) |
Physical Eigenschaften
| Schmelzpunkt | 1375-1400°C |
| Wärmeleitfähigkeit | 16.3 W/m·K bei 20°C |
| Dichte | 8.0 g/cm³ |
Global Equivalents & Cross-Referenz
| Alternative Norm / Güte | Action |
|---|---|
| EN 1.4404 | Compare |
| X2CrNiMo17-12-2 | Compare |
| SUS316L | Compare |
| 022Cr17Ni12Mo2 | Compare |
| AISI 316L | Compare |
Heat Treatment & Processing
| Lösung Annealing | 1040-1120°C, wasser quench |
| Stress Relieving | 250-425°C (avoid 425-860°C) |
| Hinweis | Cannot sein hardened durch heat treatment |
Welding & Fabrication
| Preheat | Nicht erforderlich |
| Filler Metal | ER316L (GMAW), E316L-16 (SMAW) |
| Interpass Temp | Max 175°C |
| Schweißeignung Rating | Excellent |
Verwandt Comparisons
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Frequently Asked Questions
Warum choose 316L über 304?
316L adds 2-3% molybdenum für dramatically improved pitting widerstand in chloride environments. Für coastal/marine, chemical processing, oder any salt exposure, 316L ist der minimum recommended grade. Es auch hat der niedrig-carbon advantage für als-welded fabrication. 316L ist approximately 25-40% mehr expensive als 304.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu