Oxidizing Chemicals Corrosion Resistance Hastelloy G3 , Coil Sheet Nickel Chromium Iron Alloy

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