Vollständiger Leitfaden zur Auswahl von Befestigungsmaterialien. Erfahren Sie mehr über Kohlenstoffstahl, Edelstahlsorten, Legierungsstahl.
Carbon Steel Fasteners
Carbon steel is the most common fastener material: Low Carbon Steel (< 0.25% C): - Grade 2, Grade 5 equivalent - Good ductility and machinability - Applications: General purpose, light-duty - Cost: Lowest Medium Carbon Steel (0.25-0.60% C): - Grade 8 equivalent - Heat treatable for higher strength - Applications: Automotive, machinery Alloy Steel (> 0.60% C): - Additives: Cr, Mo, V for strength - Grade 10.9, 12.9 - Applications: Critical structural, aerospace
Stainless Steel Fasteners
Stainless steel offers superior corrosion resistance: Austenitic (300 Series): - 304 (18-8): General purpose, good corrosion resistance - 316: Molybdenum for chloride resistance, marine - 321: Titanium stabilized, high temp - Non-magnetic, good formability Martensitic (400 Series): - 410: Hardenable, magnetic - 416: Free-machining variant - Applications: Cutlery, instruments Ferritic (400 Series): - 430: Good corrosion resistance, magnetic - Applications: Automotive trim, decorative
Material Selection Criteria
Key factors for material selection: 1. Corrosion Environment: - Indoor/dry: Carbon steel adequate - Outdoor/moderate: HDG carbon steel - Coastal/marine: Stainless 316 - Chemical: Check compatibility 2. Strength Requirements: - General: Grade 4.8/5.8 - Structural: Grade 8.8 minimum - Critical: Grade 10.9 or 12.9 3. Temperature: - Room temp: Most materials OK - High temp: Special alloys - Cryogenic: Austenitic stainless 4.Cost: - Carbon steel: Lowest - Stainless 304: 3-5x carbon steel - Stainless 316: 4-6x carbon steel