Nickel Alloy Incoloy 800-ANN vs Incoloy 800 CW-H
Nickel Alloy · Incoloy 800 temper comparison
Incoloy 800-ANN and Incoloy 800 CW-H are two conditions of the same nickel alloy grade, Incoloy 800: ANN (annealed) versus CW-H (cold Worked, Hard). The chemistry is identical, so every difference below comes from the condition. Incoloy 800 CW-H is the stronger of the two: yield strength 680 MPa (98.6 ksi) against 250 MPa (36.3 ksi) for Incoloy 800-ANN, about 172% more; tensile strength follows at 850 MPa (123 ksi) vs 600 MPa (87 ksi). In exchange, Incoloy 800-ANN is the more ductile: elongation 45% versus 12% for Incoloy 800 CW-H, and Incoloy 800 CW-H is harder (250 HB vs 140 HB). Incoloy 800-ANN runs hotter in service (815°C vs 500°C continuous). On the shop floor, Incoloy 800-ANN welds better (very good vs good).
Incoloy 800-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Incoloy 800 CW-HChoose it when strength drives the design.
Incoloy 800-ANN vs Incoloy 800 CW-H: 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 800-ANNIncoloy 800 CW-H
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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 75 GPa10.9 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.
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.
Electrical Conductivity
Electrical Resistivity
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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 40 / 100 · Brazeability / Solderability 70 / 100 · Polishability 75 / 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 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 800-ANN vs Incoloy 800 CW-H — frequently asked
Is Incoloy 800 CW-H stronger than Incoloy 800-ANN?
Yes. Incoloy 800 CW-H has a typical yield strength of 680 MPa (98.6 ksi) against 250 MPa (36.3 ksi) for Incoloy 800-ANN — about 172% more. Tensile strength is 850 MPa (123 ksi) vs 600 MPa (87 ksi).
Which condition does FabDigit quote by default, ANN or CW-H?
ANN is the default Incoloy 800 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, Incoloy 800-ANN or Incoloy 800 CW-H?
Incoloy 800-ANN, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for Incoloy 800 CW-H; for welding the order is Incoloy 800-ANN first (very good, 78/100) then Incoloy 800 CW-H (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Incoloy 800-ANN and Incoloy 800 CW-H 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.