Copper Alloy C96400 vs C96800
Copper Alloy · grade comparison
Copper Alloy C96400 and C96800 are both copper alloy grades. C96800 is the stronger of the two: yield strength 655 MPa (95 ksi) against 265 MPa (38.4 ksi) for C96400, about 147% more; tensile strength follows at 790 MPa (115 ksi) vs 480 MPa (69.6 ksi). In exchange, C96400 is the more ductile: elongation 25% versus 6% for C96800, and C96800 is harder (285 HB vs 140 HB). C96400 is stiffer (152 GPa vs 140 GPa) and C96400 runs hotter in service (300°C vs 260°C continuous). On the shop floor, C96800 machines more easily (good vs poor) and C96400 welds better (very good vs poor).
C96400Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C96800Choose it when strength drives the design, or when the part is machined in volume.
C96400 vs C96800: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all copper 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 copper 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
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
Compressive Strength
Hardness, Rockwell C
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Latent Heat of Fusion 210 J/g90.3 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) -0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every copper alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | C96400 | C96800 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C96400 vs C96800 — frequently asked
Is C96800 stronger than C96400?
Yes. C96800 has a typical yield strength of 655 MPa (95 ksi) against 265 MPa (38.4 ksi) for C96400 — about 147% more. Tensile strength is 790 MPa (115 ksi) vs 480 MPa (69.6 ksi).
Which is cheaper, C96400 or C96800?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, C96400 or C96800?
C96800. Its machinability rates good (55/100) against poor (25/100) for C96400; for welding the order is C96400 first (very good, 80/100) then C96800 (poor, 30/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C96400 and C96800 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.