Sandvik SAF 31803

Tube and pipe, seamless Datasheet

Datasheet updated 2017-01-19 12:23 (supersedes all previous editions)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.

Sandvik SAF 31803 is a duplex (austenitic-ferritic) stainless steel characterized by:

  • High resistance to stress corrosion cracking in chloride-bearing environments
  • High resistance to stress corrosion cracking in environments containing hydrogen sulphide
  • High resistance to general corrosion, pitting, and crevice corrosion
  • High resistance to erosion corrosion and corrosion fatigue
  • High mechanical strength - roughly twice the proof strength of austenitic stainless steel
  • Physical properties that offer design advantages
  • Good weldability

Standards

  • UNS: S31803

Product standards

Seamless and welded tube:
ASTM A789
Seamless and welded pipe:
ASTM A790

Approvals

  • ASME Boiler and Pressure Vessel Code, Section VIII, Div. 1 and Div. 2
  • NACE MR0175/ISO 15156 (Petroleum and natural gas industries - Materials for use in H2S-containing Environments in oil and gas production - Part 1: General principles for selection of cracking-resistant materials Published:2003)
  • ASME B31.3 Process Piping

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.