A4-80 is the core material and performance grade specification of stainless steel bolts, which is widely used and has clear requirements for corrosion resistance and strength. The following is a detailed explanation of A4-80 stainless steel bolts:
1. Material: A4-80 bolts are made of stainless steel, usually AISI 316 (or its equivalent similar material). This type of stainless steel has excellent corrosion resistance and oxidation resistance, and is especially suitable for use in humid environments, corrosive medium environments and marine environments.
2. Grade Specification: The grade specification of A4-80 bolts is determined in accordance with international standards ISO 3506-1 and ISO 3506-2. Among them, A4 represents the material group of stainless steel (corresponding to austenitic stainless steel), and 80 represents that the minimum tensile strength of the bolt is 800 N/mm².
The characteristics and applications of A4-80 stainless steel bolts are as follows:
- Strong Corrosion Resistance: Relying on high-quality stainless steel material, A4-80 bolts have excellent corrosion resistance, seawater erosion resistance and chemical medium corrosion resistance, and can be used stably in humid, corrosive and marine environments for a long time.
- High Tensile Strength: The minimum tensile strength of A4-80 bolts reaches 800 N/mm², with excellent strength performance, suitable for application scenarios that need to bear large loads and have high requirements for connection strength.
- Wide Application Range: A4-80 stainless steel bolts are widely used in shipbuilding, marine engineering, chemical industry, food processing equipment, pharmaceutical equipment and other fields that have high requirements for both corrosion resistance and strength.
It should be noted that when selecting and installing A4-80 stainless steel bolts, it is necessary to combine specific application requirements, working conditions and relevant standards and specifications, standardize the selection and installation operations, so as to ensure the safety and reliability of the connection.






