Good high temperature oxidation resistance to 2000°F

Designed for high temperature applications, 310 stainless steel threaded flanges provide high temperature oxidation resistance to 2000°F under mild cyclic conditions. An economic alternative to nickel alloys like alloy 330 or Inconel, 310 flanges provide slightly less strength and temperature resistance – but at a significantly lower price point.  Alloy 310 can be used in moderately caburizing, moderately oxidizing, nitriding, cementing and thermal cycling applications when not used at the maximum service temperature. 310SS threaded flanges also have good resistance to sulfidation and other forms of hot corrosion.  Although primarily known for its high temperature properties, 310 stainless steel also provides excellent performance at cryogenic temperatures, with toughness down to -450˚F. Though 310 threaded flanges are ideal for high temperature use, they should not be exposed to the severe thermal shock of repeated liquid quenching or where aqueous corrosive contaminants are present.

Benefits

  • High temperature resistance.
  • Excellent resistance to oxidation under mildly cyclic conditions.
  • Good resistance to sulfidation and atmospheres where sulfur dioxide gas is encountered at elevated temperatures.
  • Good resistance to thermal fatigue.
  • Excellent toughness to cryogenic temperatures of -450°F.
  • Low magnetic permeability.
  • Good ductility and weldability.

Applications

  • Thermal processing and high temperature furnaces rely on 310 flanges for their high temperature and oxidation resistance in minor cyclic conditions.
  • 310SS threaded flanges are commonly used in the petrochemical industry for their ability to provide resistance to moderately carburizing atmospheres.
  • The high temperature properties of 310 threaded flanges make them ideal for ore processing, steel plants, power generation, and sintering.
  • Cryogenic structures often use 310 stainless steel flanges for their strength at -450°F and low magnetic permeability.

310 Stainless Steel Properties
Tensile Strength (ksi)  70
Yield Strength (ksi) 30
Rockwell B Hardness 95
Density (lb/in3) 0.285
Electrical Resistivity (Microhm-in at 68°C) 30.7
Modulus of Elasticity (x 106 psi) 28.5
Thermal Conductivity at 212°F (BTU/hr/ft2/ft/°F) 8.0

 

Resources: Flange DimensionsFlange Bolting Chart

Alloy 310 Bolt TypesBlind FlangesLap Joint FlangesSlip On FlangesSocket Weld FlangesThreaded FlangesWeld Neck Flanges


310 Stainless Steel Chemistry & Specifications

310SS Specifications: AMS 5521, AMS 5651, ASME SA 240, ASME SA 312, ASME SA 479, ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 312, ASTM A 479, EN 10095, UNS S31008, UNS S31009, Werkstoff 1.4845

310 Chemical Compositon
 


310SS Threaded Flange Features & Benefitscombined threaded flange image

310 threaded flanges have a tapered female thread to join the male threads of a pipe in order to create a tight seal. This type of flange is most ideal when post weld heat treatment is not possible in hazardous, flammable or explosive applications where welding is too dangerous. 310SS threaded flanges are also convenient in pilot processes whose configuration is often changed.

Threaded Flange Advangtages

  • The main benefit is that that threaded seal eliminates the need for welding.
  • As they do not require welding they save time and money to install.
  • Allow for connections to be made in dangerous, explosive applications where welding is not possible.
  • Useful connection in materials that are difficult to create a successful and strong weld.
  • Ideal for connecting small diameter pipes.
  • Systems could be easily reconfigured.

Threaded Flange Disadvantages

  • They are not suitable where high temperatures, frequent cyclic conditions or bending stresses are likely in applications.

 

Not sure what material is best for your application?

Contact an Expert

Questions?

Our material experts are ready to help guide you through your specific application.

Contact an Expert