Copper Alloy C95500 vs CC491K
Copper Alloy · grade comparison
Copper Alloy C95500 and CC491K are both copper alloy grades. C95500 is the stronger of the two: yield strength 300 MPa (43.5 ksi) against 115 MPa (16.7 ksi) for CC491K, about 161% more; tensile strength follows at 700 MPa (102 ksi) vs 250 MPa (36.3 ksi). In exchange, CC491K is the more ductile: elongation 25% versus 8% for C95500, and C95500 is harder (192 HB vs 60 HB). C95500 is lighter (7.53 g/cm³ vs 8.83 g/cm³ for CC491K) and C95500 is stiffer (110 GPa vs 100 GPa). On the shop floor, CC491K machines more easily (excellent vs fair), C95500 welds better (good vs poor), and CC491K sits in a lower cost tier (high, $$$$) than C95500 (specialty, $$$$$).
C95500Choose it when strength drives the design, or when weight is the constraint.
CC491KChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
C95500 vs CC491K: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Reduction in Area
Compressive Strength
Hardness, Vickers
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)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Castability
Brazeability / Solderability
Polishability
Same in both: Formability (cold) 15 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 250 L/kg30 gal/lb
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 | C95500 | CC491K |
|---|---|---|
| CNC machining | Yes | — |
| Default condition | As Cast | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Chrome Plating | Yes | — |
| Electropolishing | Yes | — |
| Nickel Plating | Yes | — |
| Painting | Yes | — |
| Tin Plating | Yes | — |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C95500 vs CC491K — frequently asked
Is C95500 stronger than CC491K?
Yes. C95500 has a typical yield strength of 300 MPa (43.5 ksi) against 115 MPa (16.7 ksi) for CC491K — about 161% more. Tensile strength is 700 MPa (102 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, C95500 or CC491K?
CC491K is the lower-cost material: it sits in the high tier ($$$$) while C95500 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, C95500 or CC491K?
CC491K. Its machinability rates excellent (85/100) against fair (40/100) for C95500; for welding the order is C95500 first (good, 60/100) then CC491K (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C95500 and CC491K 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.