347 Stainless Steel

347 is an austenitic stainless steel that is melted as AOD melt type.  This is a stabalized version of 304 stainless to help improve intergranular corrosion resistance.  This alloy is similar to 321 stainless except it uses niobium to stabilize the carbon instead of titanium.  This improved corrosion resistance allows this grade to be used in service at much higher temperatures close to 1500oF.  These applications include high temperature gaskets, expansion joints, exhaust manifolds and rocket engine parts.

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Specs USAP Produces to:
  • AMS 5646
  • AMS-QQ-S-763
  • ASME SA479
  • ASTM A193 (B8C)
  • ASTM A276
  • ASTM A320 (B8C)
  • ASTM A479

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Product Forms Sold:

Size ranges vary by specification and specific order requirements; inquire for your specific needs.

Approvals

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Industry / Trade Names
  • UNS S34700
  • Din 1.4550
Markets
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Austenitic
  • Stainless Steel

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