Nickel Alloy Incoloy 800H-AW vs Incoloy 800H-CW
Nickel Alloy · Incoloy 800H temper comparison
Incoloy 800H-AW and Incoloy 800H-CW are two conditions of the same nickel alloy grade, Incoloy 800H: AW (as-welded deposit) versus CW (cold worked). The chemistry is identical, so every difference below comes from the condition. Incoloy 800H-CW is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 300 MPa (43.5 ksi) for Incoloy 800H-AW, about 107% more; tensile strength follows at 760 MPa (110 ksi) vs 540 MPa (78.3 ksi). In exchange, Incoloy 800H-AW is the more ductile: elongation 35% versus 15% for Incoloy 800H-CW, and Incoloy 800H-CW is harder (230 HB vs 165 HB). Incoloy 800H-AW runs hotter in service (1,000°C vs 600°C continuous).
Incoloy 800H-AWChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Incoloy 800H-CWChoose it when strength drives the design.
Incoloy 800H-AW vs Incoloy 800H-CW: 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 800H-AWIncoloy 800H-CW
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)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 196 GPa28.4 Msi · Shear Modulus 75 GPa10.9 Msi · Bulk Modulus 200 GPa29 Msi · Poisson's Ratio 0.34 · Charpy V-Notch Impact (RT) 90 J66.4 ft·lbf
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 285 J/g123 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: Brazeability / Solderability 55 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 105 MJ/kg45,142 BTU/lb · Embodied Carbon (primary production) 9 kg CO₂/kg · Embodied Water 300 L/kg35.9 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.
Incoloy 800H-AW vs Incoloy 800H-CW — frequently asked
Is Incoloy 800H-CW stronger than Incoloy 800H-AW?
Yes. Incoloy 800H-CW has a typical yield strength of 620 MPa (89.9 ksi) against 300 MPa (43.5 ksi) for Incoloy 800H-AW — about 107% more. Tensile strength is 760 MPa (110 ksi) vs 540 MPa (78.3 ksi).
Which condition does FabDigit quote by default, AW or CW?
SA is the default Incoloy 800H condition in the FabDigit quote flow (neither AW nor CW). 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 800H-AW or Incoloy 800H-CW?
Incoloy 800H-CW. Its machinability rates fair (35/100) against poor (26/100) for Incoloy 800H-AW; for welding the order is Incoloy 800H-AW first (very good, 78/100) then Incoloy 800H-CW (very good, 70/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Incoloy 800H-AW and Incoloy 800H-CW 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.