Materials

410 Stainless Steel

• Type: Martensitic stainless steel

• Key Properties:

  • Good hardness and strength after heat treatment

  • Moderate corrosion resistance (better than carbon steel, but not as high as austenitic grades)

  • Can be hardened by heat treatment to achieve high tensile strength

• Fastener Applications:

  • Bolts, studs, and screws where strength is more important than corrosion resistance

  • Suitable for industrial machinery, general-purpose fasteners, and moderate corrosive environments

416 Stainless Steel

• Type: Martensitic stainless steel, free-machining

• Key Properties:

  • Similar to 410 but with added sulfur for machinability

  • Can achieve good hardness and strength after heat treatment

  • Moderate corrosion resistance

• Fastener Applications:

  • Precision machined fasteners such as screws, bolts, and studs

  • Components requiring tight tolerances and efficient machining

  • Often used in automotive, industrial equipment, and instrumentation

430 Stainless Steel

• Type: Ferritic stainless steel

• Key Properties:

  • Magnetic, moderate strength

  • Good corrosion resistance in mild environments

  • Not hardenable by heat treatment (strength comes from cold working)

• Fastener Applications:

  • Bolts, washers, and fasteners for decorative or low-stress applications

  • Components where magnetic properties are acceptable

  • Often used in appliances, automotive trim, and corrosion-resistant moderate-load fasteners