Magnetism in Stainless Steel
A4 fasteners are made from marine-grade stainless steel (typically AISI 316). They’re chosen when strength must be combined with excellent corrosion resistance. Key Benefits Superior corrosion resistance Excellent performance in saltwater, coastal, and marine environments Highly resistant to chlorides , acids, and industrial chemicals Ideal for harsh conditions Suitable for outdoor , chemical , and high-humidity applications Performs well where A2 (304) fasteners may corrode Good mechanical strength Common strength class: A4-70 (≈700 MPa tensile strength) Reliable for structural and load-bearing assemblies High temperature resistance Maintains properties at elevated temperatures better than carbon steel Low maintenance & long service life No need for protective coatings or frequent replacement Reduces lifecycle cost despite higher initial price Non-magnetic (generally) Useful in electrical, electronic, and sensitive eq...
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