ASTM A 265, B 366, B 463 B 464, B 471, B 472, B 473
B 474, B 475
UNS N08031
NACE MR0175

In what forms is Alloy 31 Available at Mega Mex?
Sheet
Plate
Bar
Pipe & Tube (welded & seamless)
Fittings
Flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples
Welding Wire (AWS Classifications: ER320LR and E320LR-16)

What are the characteristics of Alloy 31?
Excellent general corrosion resistance to sulfuric acid
Excellent resistance to chloride stress corrosion cracking
Excellent mechanical properties and fabricability
Minimal carbide precipitation during welding
Excels in resisting corrosion to hot sulfuric acids

In what applications is Alloy 31 used?
Synthetic rubber manufacturing equipment
Processing of pharmaceuticals, plastics and organic and heavy chemicals
Tanks, piping, heat exchangers, pumps, valves, and other process equipment
Acid cleaning and pickling equipment
Chemical process piping, reactor vessels
Bubble caps
Petrochemical process equipment
Food and dye production

ASTM Specifications

Mechanical Properties