Vollständiger Leitfaden für Meeres-Befestigungen. Erfahren Sie mehr über Edelstahl 316, Siliziumbronze und feuerverzinkte Befestigungen.
Marine Fastener Materials
Marine environments require special materials: 1. Stainless Steel 316: - Molybdenum addition for chloride resistance - Best choice for most marine applications - 18-8 composition with 2-3% molybdenum - Resists pitting in saltwater 2. Silicon Bronze: - Copper-silicon alloy - Traditional boat building material - Excellent saltwater resistance - Preferred for below-waterline 3. Hot-Dip Galvanized: - Steel with heavy zinc coating - Good for docks and pilings - Sacrificial protection - Reasonable cost
Marine Applications
Marine fastener applications: Above Waterline: - Deck hardware - Railings - Cleats and chocks - Use: Stainless 316 or silicon bronze Below Waterline: - Through-hull fittings - Propeller attachments - Underwater hardware - Use: Silicon bronze (traditional) or SS 316 Docks and Piers: - Framing connections - Hardware mounting - Use: Hot-dip galvanized or SS 316
Materials to Avoid
Avoid these materials in marine environments: 1. Stainless Steel 304: - Prone to pitting in saltwater - Salt trapped in pits causes rapid corrosion - Use 316 instead 2. Carbon Steel: - Rapid rusting in saltwater - Even with paint/coating - Failures can be dangerous 3. Aluminum (some alloys): - Pitting corrosion in saltwater - Use 6061-T6 or 5086-H32 - Avoid in direct seawater contact