Nickel Alloy 800-CD vs 800 HF-ANN
Nickel Alloy · 800 temper comparison
800-CD and 800 HF-ANN are two conditions of the same nickel alloy grade, 800: CD (cold drawn) versus HF-ANN (hot finished, annealed). The chemistry is identical, so every difference below comes from the condition. 800-CD is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 275 MPa (39.9 ksi) for 800 HF-ANN, about 82% more; tensile strength follows at 720 MPa (104 ksi) vs 585 MPa (84.8 ksi). In exchange, 800 HF-ANN is the more ductile: elongation 42% versus 25% for 800-CD, and 800-CD is harder (210 HB vs 150 HB). 800 HF-ANN runs hotter in service (815°C vs 550°C continuous).
800-CDChoose it when strength drives the design.
800 HF-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
800-CD vs 800 HF-ANN: 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
Compressive Strength
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 196.5 GPa28.5 Msi · Shear Modulus 76.5 GPa11.1 Msi · Bulk Modulus 203 GPa29.4 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 7.94 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,357°C2,475 °F · Liquidus Temperature 1,385°C2,525 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 11.5 W/m·K6.6 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.4 µm/m·K8 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 1.7 % IACS · Electrical Resistivity 9.89×10⁻⁷ Ω·m38.9 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 75 / 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 · Brazeability / Solderability 65 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 95 MJ/kg40,843 BTU/lb · Embodied Carbon (primary production) 7.5 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 40%
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.
800-CD vs 800 HF-ANN — frequently asked
Is 800-CD stronger than 800 HF-ANN?
Yes. 800-CD has a typical yield strength of 500 MPa (72.5 ksi) against 275 MPa (39.9 ksi) for 800 HF-ANN — about 82% more. Tensile strength is 720 MPa (104 ksi) vs 585 MPa (84.8 ksi).
Which condition does FabDigit quote by default, CD or HF-ANN?
ANN is the default 800 condition in the FabDigit quote flow (neither CD nor HF-ANN). 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, 800-CD or 800 HF-ANN?
800-CD. Its machinability rates fair (35/100) against poor (28/100) for 800 HF-ANN.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 800-CD and 800 HF-ANN 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.