Nickel Alloy Hastelloy G-3-CD vs Hastelloy G-3-SA
Nickel Alloy · Hastelloy G-3 temper comparison
Hastelloy G-3-CD and Hastelloy G-3-SA are two conditions of the same nickel alloy grade, Hastelloy G-3: CD (cold drawn) versus SA (solution annealed). 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 310 MPa (45 ksi) for Hastelloy G-3-SA, about 132% more; tensile strength follows at 900 MPa (131 ksi) vs 690 MPa (100 ksi). In exchange, Hastelloy G-3-SA is the more ductile: elongation 50% versus 20% for Hastelloy G-3-CD, and Hastelloy G-3-CD is harder (262 HB vs 185 HB). Hastelloy G-3-SA runs hotter in service (650°C vs 540°C continuous).
Hastelloy G-3-CDChoose it when strength drives the design.
Hastelloy G-3-SAChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Hastelloy G-3-CD vs Hastelloy G-3-SA: 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-CDHastelloy G-3-SA
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 199 GPa28.9 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 166 GPa24.1 Msi · Poisson's Ratio 0.3
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.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 10.2 W/m·K5.9 BTU/hr·ft·°F · 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.
Same in both: Electrical Conductivity 1.5 % IACS · Electrical Resistivity 1.18×10⁻⁶ Ω·m46.5 µΩ·in
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-CD vs Hastelloy G-3-SA — frequently asked
Is Hastelloy G-3-CD stronger than Hastelloy G-3-SA?
Yes. Hastelloy G-3-CD has a typical yield strength of 720 MPa (104 ksi) against 310 MPa (45 ksi) for Hastelloy G-3-SA — about 132% more. Tensile strength is 900 MPa (131 ksi) vs 690 MPa (100 ksi).
Which condition does FabDigit quote by default, CD or SA?
SA is the default Hastelloy G-3 condition in the FabDigit quote flow. 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-CD or Hastelloy G-3-SA?
Hastelloy G-3-CD, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for Hastelloy G-3-SA; for welding the order is Hastelloy G-3-SA 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-CD and Hastelloy G-3-SA 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.