Nickel Alloy 601GC-ANN vs 601GC-HRA
Nickel Alloy · 601GC temper comparison
601GC-ANN and 601GC-HRA are two conditions of the same nickel alloy grade, 601GC: ANN (annealed) versus HRA (hot-worked and annealed). The chemistry is identical, so every difference below comes from the condition. 601GC-ANN is the stronger of the two: yield strength 310 MPa (45 ksi) against 290 MPa (42.1 ksi) for 601GC-HRA, about 7% more; tensile strength follows at 690 MPa (100 ksi) vs 655 MPa (95 ksi). 601GC-ANN is harder — 170 HB against 160 HB for 601GC-HRA — which matters for wear surfaces and threads.
601GC-ANNChoose it when strength drives the design, or when surface hardness matters.
601GC-ANN vs 601GC-HRA: 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.
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 206 GPa29.9 Msi · Shear Modulus 78.5 GPa11.4 Msi · Bulk Modulus 180 GPa26.1 Msi · Poisson's Ratio 0.31
Physical
Density and transition temperatures.
Same in both: Density 8.11 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,360°C2,480 °F · Liquidus Temperature 1,411°C2,572 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 11.3 W/m·K6.5 BTU/hr·ft·°F · Specific Heat Capacity 448 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.8 µm/m·K7.6 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 1,200°C2,192 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.5 % IACS · Electrical Resistivity 1.19×10⁻⁶ Ω·m46.9 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 78 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 85 / 100 · Castability 30 / 100 · Brazeability / Solderability 65 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 400 L/kg47.9 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.
601GC-ANN vs 601GC-HRA — frequently asked
Is 601GC-ANN stronger than 601GC-HRA?
Yes. 601GC-ANN has a typical yield strength of 310 MPa (45 ksi) against 290 MPa (42.1 ksi) for 601GC-HRA — about 7% more. Tensile strength is 690 MPa (100 ksi) vs 655 MPa (95 ksi).
Which condition does FabDigit quote by default, ANN or HRA?
ANN is the default 601GC 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.
When should I choose 601GC-ANN over 601GC-HRA?
Pick 601GC-ANN when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 601GC-ANN and 601GC-HRA 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.