347 Stainless Steel

UNS S34700

347 Stainless fasteners are used in corrosive environments where temperatures may cycle to over 800º F (425º C). Oil refinery applications are common. Other uses for 347 Stainless are in heat sensors and thermocouples.

321 Stainless (UNS S32100/ASTM A193 B8T) is a very close relative. While 347 Stainless is stabilized by the addition of columbium and tantalum to resist intergranular corrosion, 321 is stabilized by the addition of titanium.

347 Stainless Fasteners

Specifications

  • Bolts: ASTM A193, ASME SA193 B8C
  • Nuts: ASTM A194 8C, ASME SB 194 8C

Material Properties

Material Properties: 347 Stainless

Technical Data Sheet

Industries & Applications

  • Oil & Gas

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