Nickel Alloy Ni-Span-C 902-CD vs Ni-Span-C 902-HF
Nickel Alloy · Ni-Span-C 902 temper comparison
Ni-Span-C 902-CD and Ni-Span-C 902-HF are two conditions of the same nickel alloy grade, Ni-Span-C 902: CD (cold drawn) versus HF (hot Finished / Hot Rolled bar and forgings, unaged). The chemistry is identical, so every difference below comes from the condition. Ni-Span-C 902-CD is the stronger of the two: yield strength 930 MPa (135 ksi) against 480 MPa (69.6 ksi) for Ni-Span-C 902-HF, about 94% more; tensile strength follows at 1,100 MPa (160 ksi) vs 830 MPa (120 ksi). In exchange, Ni-Span-C 902-HF is the more ductile: elongation 30% versus 8% for Ni-Span-C 902-CD, and Ni-Span-C 902-CD is harder (310 HB vs 200 HB). Ni-Span-C 902-HF runs hotter in service (200°C vs 175°C continuous).
Ni-Span-C 902-CDChoose it when strength drives the design.
Ni-Span-C 902-HFChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Ni-Span-C 902-CD vs Ni-Span-C 902-HF: 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.
Ni-Span-C 902-CDNi-Span-C 902-HF
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
Same in both: Shear Modulus 69 GPa10 Msi · Bulk Modulus 150 GPa21.8 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.05 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,440°C2,624 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 13.8 W/m·K8 BTU/hr·ft·°F · Specific Heat Capacity 502 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8 µm/m·K4.4 µin/in·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Min Service Temperature -100°C-148 °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) -0.4 V · Corrosion Resistance 40 / 100
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% · Castability 25 / 100 · Brazeability / Solderability 45 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 115 MJ/kg49,441 BTU/lb · Embodied Carbon (primary production) 8 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 25%
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.
Ni-Span-C 902-CD vs Ni-Span-C 902-HF — frequently asked
Is Ni-Span-C 902-CD stronger than Ni-Span-C 902-HF?
Yes. Ni-Span-C 902-CD has a typical yield strength of 930 MPa (135 ksi) against 480 MPa (69.6 ksi) for Ni-Span-C 902-HF — about 94% more. Tensile strength is 1,100 MPa (160 ksi) vs 830 MPa (120 ksi).
Which condition does FabDigit quote by default, CD or HF?
ANN is the default Ni-Span-C 902 condition in the FabDigit quote flow (neither CD nor HF). 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 welds better, Ni-Span-C 902-CD or Ni-Span-C 902-HF?
Ni-Span-C 902-HF. Its weldability rates fair (50/100) against fair (45/100) for Ni-Span-C 902-CD.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ni-Span-C 902-CD and Ni-Span-C 902-HF 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.