Nickel Alloy Inconel 718 Annealed vs Inconel 718 Hot Rolled
Nickel Alloy · Inconel 718 temper comparison
Inconel 718 Annealed and Inconel 718 Hot Rolled are two conditions of the same nickel alloy grade, Inconel 718: Annealed versus Hot Rolled. The chemistry is identical, so every difference below comes from the condition. Inconel 718 Hot Rolled is the stronger of the two: yield strength 700 MPa (102 ksi) against 460 MPa (66.7 ksi) for Inconel 718 Annealed, about 52% more; tensile strength follows at 1,050 MPa (152 ksi) vs 900 MPa (131 ksi). In exchange, Inconel 718 Annealed is the more ductile: elongation 50% versus 30% for Inconel 718 Hot Rolled, and Inconel 718 Hot Rolled is harder (260 HB vs 180 HB). On the shop floor, Inconel 718 Annealed welds better (very good vs good).
Inconel 718 AnnealedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Inconel 718 Hot RolledChoose it when strength drives the design.
Inconel 718 Annealed vs Inconel 718 Hot Rolled: 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.
Inconel 718 AnnealedInconel 718 Hot Rolled
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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 163 GPa23.6 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 8.19 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,260°C2,300 °F · Liquidus Temperature 1,336°C2,437 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 11.4 W/m·K6.6 BTU/hr·ft·°F · Specific Heat Capacity 435 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13 µm/m·K7.2 µin/in·°F · Latent Heat of Fusion 210 J/g90.3 BTU/lb · Max Service Temperature (continuous) 650°C1,202 °F · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.4 % IACS · Electrical Resistivity 1.25×10⁻⁶ Ω·m49.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 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 45 / 100 · Brazeability / Solderability 55 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 250 MJ/kg107,481 BTU/lb · Embodied Carbon (primary production) 16 kg CO₂/kg · Embodied Water 250 L/kg30 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.
Inconel 718 Annealed vs Inconel 718 Hot Rolled — frequently asked
Is Inconel 718 Hot Rolled stronger than Inconel 718 Annealed?
Yes. Inconel 718 Hot Rolled has a typical yield strength of 700 MPa (102 ksi) against 460 MPa (66.7 ksi) for Inconel 718 Annealed — about 52% more. Tensile strength is 1,050 MPa (152 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, Annealed or Hot Rolled?
Solution Annealed is the default Inconel 718 condition in the FabDigit quote flow (neither Annealed nor Hot Rolled). 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, Inconel 718 Annealed or Inconel 718 Hot Rolled?
Inconel 718 Annealed, by a small margin. Both rate poor for machinability — 20/100 against 15/100 for Inconel 718 Hot Rolled; for welding the order is Inconel 718 Annealed first (very good, 72/100) then Inconel 718 Hot Rolled (good, 62/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Inconel 718 Annealed and Inconel 718 Hot Rolled 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.