Nickel Alloy Hastelloy G-3-AW vs Hastelloy G-3-CD
Nickel Alloy · Hastelloy G-3 temper comparison
Hastelloy G-3-AW and Hastelloy G-3-CD are two conditions of the same nickel alloy grade, Hastelloy G-3: AW (as-welded deposit) versus CD (cold drawn). The chemistry is identical, so every difference below comes from the condition. Hastelloy G-3-CD is the stronger of the two: yield strength 720 MPa (104 ksi) against 420 MPa (60.9 ksi) for Hastelloy G-3-AW, about 71% more; tensile strength follows at 900 MPa (131 ksi) vs 660 MPa (95.7 ksi). In exchange, Hastelloy G-3-AW is the more ductile: elongation 35% versus 20% for Hastelloy G-3-CD, and Hastelloy G-3-CD is harder (262 HB vs 192 HB). Hastelloy G-3-AW runs hotter in service (650°C vs 540°C continuous).
Hastelloy G-3-AWChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Hastelloy G-3-CDChoose it when strength drives the design.
Hastelloy G-3-AW vs Hastelloy G-3-CD: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all nickel alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all nickel alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Hastelloy G-3-AWHastelloy G-3-CD
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 166 GPa24.1 Msi · Poisson's Ratio 0.3 · Charpy V-Notch Impact (RT) 120 J88.5 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 8.31 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,260°C2,300 °F · Liquidus Temperature 1,355°C2,471 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 423 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.5 µm/m·K7.5 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 1.5 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 50 / 100 · Polishability 72 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 280 L/kg33.6 gal/lb · Typical Recycled Content 35%
Strength versus weight
Yield strength against density for every nickel alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Hastelloy G-3-AW vs Hastelloy G-3-CD — frequently asked
Is Hastelloy G-3-CD stronger than Hastelloy G-3-AW?
Yes. Hastelloy G-3-CD has a typical yield strength of 720 MPa (104 ksi) against 420 MPa (60.9 ksi) for Hastelloy G-3-AW — about 71% more. Tensile strength is 900 MPa (131 ksi) vs 660 MPa (95.7 ksi).
Which condition does FabDigit quote by default, AW or CD?
SA is the default Hastelloy G-3 condition in the FabDigit quote flow (neither AW nor CD). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Hastelloy G-3-AW or Hastelloy G-3-CD?
Hastelloy G-3-CD, by a small margin. Both rate poor for machinability — 30/100 against 22/100 for Hastelloy G-3-AW; for welding the order is Hastelloy G-3-AW first (excellent, 85/100) then Hastelloy G-3-CD (very good, 78/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Hastelloy G-3-AW and Hastelloy G-3-CD side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.