Nickel Alloy NiCr80/20 1/4H vs NiCr80/20 Annealed
Nickel Alloy · NiCr80/20 temper comparison
NiCr80/20 1/4H and NiCr80/20 Annealed are two conditions of the same nickel alloy grade, NiCr80/20: 1/4H (quarter hard) versus Annealed. The chemistry is identical, so every difference below comes from the condition. NiCr80/20 1/4H is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 400 MPa (58 ksi) for NiCr80/20 Annealed, about 55% more; tensile strength follows at 830 MPa (120 ksi) vs 700 MPa (102 ksi). In exchange, NiCr80/20 Annealed is the more ductile: elongation 35% versus 20% for NiCr80/20 1/4H, and NiCr80/20 1/4H is harder (215 HB vs 160 HB).
NiCr80/20 1/4HChoose it when strength drives the design.
NiCr80/20 AnnealedChoose it when the part is bent, formed or impact-loaded.
NiCr80/20 1/4H vs NiCr80/20 Annealed: 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.
NiCr80/20 1/4HNiCr80/20 Annealed
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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 218 GPa31.6 Msi · Shear Modulus 82 GPa11.9 Msi · Bulk Modulus 175 GPa25.4 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.4 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,380°C2,516 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 11.3 W/m·K6.5 BTU/hr·ft·°F · Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.4 µm/m·K7.4 µin/in·°F · Latent Heat of Fusion 297 J/g128 BTU/lb · Max Service Temperature (continuous) 1,150°C2,102 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 72 / 100
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 65 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 145 MJ/kg62,339 BTU/lb · Embodied Carbon (primary production) 11.5 kg CO₂/kg · Embodied Water 220 L/kg26.4 gal/lb · Typical Recycled Content 30%
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.
NiCr80/20 1/4H vs NiCr80/20 Annealed — frequently asked
Is NiCr80/20 1/4H stronger than NiCr80/20 Annealed?
Yes. NiCr80/20 1/4H has a typical yield strength of 620 MPa (89.9 ksi) against 400 MPa (58 ksi) for NiCr80/20 Annealed — about 55% more. Tensile strength is 830 MPa (120 ksi) vs 700 MPa (102 ksi).
Which condition does FabDigit quote by default, 1/4H or Annealed?
Annealed is the default NiCr80/20 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, NiCr80/20 1/4H or NiCr80/20 Annealed?
NiCr80/20 1/4H, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for NiCr80/20 Annealed; for welding the order is NiCr80/20 Annealed first (very good, 72/100) then NiCr80/20 1/4H (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in NiCr80/20 1/4H and NiCr80/20 Annealed 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.