Materials

AISI 310S1.4845 – UNS S31008

Excellent resistance to oxidation under mildly cyclic conditions through 2000°F characterizes 310. Because of its high chromium and medium nickel contents, 310 has good resistance to sulfidation and other forms of hot corrosion. 310 is widely used in moderately carburizing atmospheres such as encountered in petrochemical environments.
Often in many product forms, the grain size and carbon content can meet both the 310S and 310H requirements. 310 is often used at cryogenic temperatures, with excellent toughness to -450°F, and low magnetic permeability. 310 has a machinability rating of 42%.

Products

AISI 310S
Availability
seamless-pipe Seamless Tubes

 stock
welded-pipe Welded Tubes
plate Plates
bar Bars
flanges Flanges
accessories Fittings  stock

Applications

  • Flare tips
  • Fluidized bed coal combustors
  • Radiant tubes
  • Tube hangers for petroleum refining and steam boilers
  • Coal gasifier internal components
  • Thermowells
  • Refractory anchor bolts
  • Burners, combustion chambers
  • Retorts, muffles, annealing covers
  • Food processing equipment
  • Cryogenic structures

General characteristics

  • Oxidation resistance to 2000°F
  • Moderate strength at high temperature
  • Resistance to hot corrosion
  • Strength and toughness at cryogenic temperatures

Technical information

Specifications

 

310S – UNS S31008
Products Norm ASTM
Seamless Tubes A-213 A-312
Welded Tubes  
Plates A-240
Bars A-276 A-479
Flanges A-182
Fittings A-403

Chemical specifications %

 

310S – UNS S31008
Element Simbol Maximum %
Carbon C 0,08
Manganese Mn 2,00
Phosphorus P 0,045
Sulfur S 0,030
Silicon Si 1,00
Nickel Ni 19,0-22,0
Chrome Cr 24,0-26,0

Mechanical Properties

310S – UNS S31008
Norm Rm min. Rp 0,2% min. E4d min.% Z min.% T.I.(J) HR B HB
A-182 75 (515) 30 (205) 30 50
A-213 75 (515) 30 (205) 90 192
A-240 75 (515) 30 (205) 40 95 217
A-276 90 (620) 45 (310) 30 40
A-312 75 (515) 30 (205)
A-403 75 (515) 30 (205)