Hastelloy G3 excellent corrosion resistance to oxidizing chemicals
atmospheres
Alloy G3 has excellent corrosion resistance to oxidizing chemicals
and atmospheres while offering resistance to reducing chemicals
resulting from the nickel and copper content. The high molybdenum
provides very good resistance to pitting and crevice corrosion. The
low carbon helps prevent sensitization, giving the alloy resistance
to inter-granular corrosion.
Applications
Hastelloy® G3 (Alloy G3) is used in handling equipment that processes
reducing acids such as phosphoric and sulfuric. Other applications
are scrubbers, sour gas and oil production equipment.
Description
Hastelloy® G3 (Alloy G3) is nickel-chromium-iron alloy with addition of
molybdenum and copper. The alloy has excellent corrosion resistance
to oxidizing chemicals and atmospheres while offering resistance to
reducing chemical resulting from the nickel and copper content.
Chemistry Typical
Nickel: Balance
Chromium: 21.00-23.5
Iron: 18.00-21.00
Molybdenum: 6.0-8.0
Copper: 1.5-2.5
Cobalt: 5.0 max
Columbium + Tantalum: 0.50 max
Carbon: 0.015 max
Tungsten: 1.5 max
Silicon: 1.0 max
Phosphorus: 0.04 max
Sulfur: 0.03 max
Physical Properties
Density: 0.294 lb/in3, 8.14 g/cm3
Electrical Resistivity: ohm-cir-mil/ft,(micro-ohms-cm):
675.97(112.37)
Specific Heat: BTU/lb-°F (J/Kg-°C)
At 77°F (25°C): 0.108 (453)
At 212°F (100°C): 0.111 (464)
At 392°F (200°C): 0.114 (478)
At 572°F (300°C): 0.118 (493)
At 752°F (400°C): 0.121 (507)
At 932°F (500°C): 0.124 (521)
At 1112°F (600°C): 0.130 (543)
Thermal Conductivity: BTU-in/hr-ft2-°F, (W/m-°C)
At 77°F (25°C): 69 (10.0)
At 212°F (100°C): 82 (11.8)
At 392°F (200°C): 96 (13.8)
At 572°F (300°C): 110 (15.9)
At 752°F (400°C): 124 (17.9)
At 932°F (500°C): 139 (20.0)
At 1112°F (600°C): 151 (21.8)
Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C)
75-212°F (24-100°C): 8.1 (14.6)
75-392°F (24-200°C): 8.1 (14.6)
75-572°F (24-300°C): 8.1 (14.6)
75 – 752°F (24 – 400°C): 8.2 (14.8)
75 – 932°F (24 – 500°C): 8.4 (15.1)
75 – 1112°F (24 – 600°C): 8.4 (15.1)
Modulus of Elasticity: ksi (MPa)
28.9 x 103 Ksi (199 x 103) in tension
Melting Range: 2300-2450°F (1260-1343°C):
Forms
Coil-Sheet, Strip, Foil
Wire – Profile, Round, Flat, Square
Mechanical Properties at Room Temperature
Properties: Annealed Typical
Ultimate Tensile Strength: 90 KSI min (621 MPa min)
Yield Strength: 35 KSI min (241 MPa min)
Elongation: 45% min
Hardness: aim Rb 100 max
Properties: Tempered
Hastelloy® G3 (Alloy G3) can be cold worked to various tempers. Contact
Ulbrich Technical Service for additional information
