Product Detail

Hastelloy® G-3 UNS N06985

Surface: Hastelloy® G-3
Size: Hastelloy
Color: Primary color

Hastelloy® G-3 is nickel-chromium-iron alloy with addition

of molybdenum and copper.

(Alloy G-3) Strip, Coil, Foil & Wire, ASTM 582, ASTM B 581


Hastelloy® G-3 is used in handling equipment that processes reducing acids such as phosphoric and sulfuric. Other applications are scrubbers, sour gas and oil production equipment.


Hastelloy® G-3 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.


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


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 (199 x 103) in tension

Melting Range: 2300 - 2450 °F (1260 - 1343 °C)


Coil -Sheet, Strip, Foil Wire -Profile, Round, Flat, Square



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


Hastelloy® G-3 can be cold worked to various tempers. Contact Ulbrich Technical Service for additional information.



Refer to NACE (National Associate of Corrosion Engineers) for recommendations.


#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. #2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.
#BA - Bright annealed cold rolled and bright annealed
#CBA - Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
#2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements.


Hastelloy® G-3 is a grade of Hastelloy® which is a nickel-molybdenum alloy. There are many different grades of Hastelloy®, which includes G-3. Grades of Hastelloy® have each been optimized for a specific purpose. Molybdenum makes Hastelloy® harder and stronger at high temperatures. This alloying element and the characteristics it imbues into the material also makes it great for welding applications. These nickel alloys are easily fabricated and formed. They also exhibit good ductility and are able to be cold worked.

All grades of Hastelloy® are considered to be a corrosion resistant alloy because each grade exhibits superior resistance to various corrosive environments. Hastelloy® has outstanding resistance to highly oxidizing corrosives such as oxidizing salts and reducing agents, making it a great alloy to specify for applications used in moderate to severe corrosive environments.

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.


Q: What are the main products you can supply?

A: We are the professional and famous factory in China for Stainless Steel Sheet/Coils/Tubes/Profiles/Composite packaging Materials; Aluminum; Copper; Alloy Steel; Corten Steel; Wear Resistant Steel and Carbon Steels.

Q: Will your company could accept the customized and OEM products?

A: Yes, we can do the production based on your drawings and with your logo, also because we have a very strong design and development team, so the feedback is very good for customized products.

Q: What are the advantages of your company?

A:(1): Prime quality and reasonable price.

(2): Wide excellent experiences with after-sale service.

(3): Every process will be checked by responsible QC which insures every product's quality.

(4): Professional packing teams which keep every packing safely.

(5): Trial order can be done in one week.

(6): Samples can be provided as your requirements.

Q: What are your payment terms?

A: Commonly two payment terms for new customers,

1) 30%T/T as deposit, 70% balance against B/L copy.

2) 100% Irrevocable L/C at sight.

If you need other terms, please feel free to contact us too, we will try our best.

Q: How about the samples? Is it free to pay extra fees?

A: Yes, we would like to supply the samples before order, if the samples are from stock, it will be free, if the samples are from new production, we will charge some reasonable cost, but this amount will be deducted from your first order invoice.

Q: How long is your delivery time?

A: Our daily inventory is more than 8000 tons, so far common products size, just need 5 days from stocks; if the special size from new production, delivery 20-30 days.

Different products have different delivery times. The products will be delivered as soon as possible on the basis of quality assurance.

Q: How to control and guarantee your shipment quality?

A:1) All our factories are ISO9001 certified facilities;

2) World famous origin mills as TISCO, Baosteel;

3) Ex factory inspection by our own laboratory;

4) SGS/BV Third party inspection before delivery.