Stainless Steel

Stainless Steel fasteners offers superior corrosion resistance as compared to other Carbon Steel and Alloy Steel fasteners. Stainless Steel fasteners usually have a chromium content of 15% - 20% and a nickel content of 5% - 19%. The presence of these chemicals help prevent oxidation and thus the fasteners are corrosion resistant.

Tensile strength of these fasteners varies from 500 MPa to 800 MPa. Common Stainless Steel fasteners are available in 304 and 316 grades.

Grade	Head Mark
304	A2‑70, A2, 304	Most frequently used Stainless Steel grade. A2 denotes SS304 Grade while 70 denotes property class 70, tensile strength min MPa 700
316	A4‑70, A4, 316	Improved resistance to acid and corrosion when compared to Grade 304. A4 on head denotes SS316 Grade while 70 denotes property class 70, tensile strength min MPa 700
316	A4‑80	Same chemical content as A4-70 but strain hardened to achieve higher tensile capabilities. A4 on head denotes SS316 Grade while 80 denotes property class 80, tensile strength min MPa 800

For detailed information, please refer to complete governing standards.