Nickel Alloy Incoloy 800HT-ANN vs Incoloy 800HT-HW
Nickel Alloy · Incoloy 800HT temper comparison
Incoloy 800HT-ANN and Incoloy 800HT-HW are two conditions of the same nickel alloy grade, Incoloy 800HT: ANN (annealed) versus HW (hot-worked). The chemistry is identical, so every difference below comes from the condition. Incoloy 800HT-HW is the stronger of the two: yield strength 280 MPa (40.6 ksi) against 240 MPa (34.8 ksi) for Incoloy 800HT-ANN, about 17% more; tensile strength follows at 560 MPa (81.2 ksi) vs 520 MPa (75.4 ksi). In exchange, Incoloy 800HT-ANN is the more ductile: elongation 45% versus 38% for Incoloy 800HT-HW, and Incoloy 800HT-HW is harder (160 HB vs 140 HB).
Incoloy 800HT-ANNChoose it when the part is bent, formed or impact-loaded.
Incoloy 800HT-HWChoose it when strength drives the design.
Incoloy 800HT-ANN vs Incoloy 800HT-HW: 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.
Incoloy 800HT-ANNIncoloy 800HT-HW
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
Same in both: Elastic (Young's) Modulus 196 GPa28.4 Msi · Shear Modulus 76 GPa11 Msi · Bulk Modulus 200 GPa29 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.
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 · Max Service Temperature (continuous) 1,100°C2,012 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.8 % IACS · Electrical Resistivity 9.9×10⁻⁷ Ω·m39 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 22% · Brazeability / Solderability 60 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 110 MJ/kg47,292 BTU/lb · Embodied Carbon (primary production) 7.5 kg CO₂/kg · Embodied Water 200 L/kg24 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.
Incoloy 800HT-ANN vs Incoloy 800HT-HW — frequently asked
Is Incoloy 800HT-HW stronger than Incoloy 800HT-ANN?
Yes. Incoloy 800HT-HW has a typical yield strength of 280 MPa (40.6 ksi) against 240 MPa (34.8 ksi) for Incoloy 800HT-ANN — about 17% more. Tensile strength is 560 MPa (81.2 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, ANN or HW?
ANN is the default Incoloy 800HT 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 Incoloy 800HT-ANN over Incoloy 800HT-HW?
Pick Incoloy 800HT-ANN when the part is bent, formed or impact-loaded. Pick Incoloy 800HT-HW when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Incoloy 800HT-ANN and Incoloy 800HT-HW 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.