Copper Alloy C84400 vs CC499K
Copper Alloy · grade comparison
Copper Alloy C84400 and CC499K are both copper alloy grades. Both yield at about 110 MPa — strength does not separate them. C84400 is the more ductile: elongation 26% versus 18% for CC499K, and CC499K is harder (65 HB vs 55 HB). C84400 is stiffer (95 GPa vs 90 GPa) and CC499K runs hotter in service (230°C vs 200°C continuous). On the shop floor, C84400 machines more easily (excellent vs very good), CC499K welds better (30 vs 20 out of 100), and CC499K sits in a lower cost tier (high, $$$$) than C84400 (specialty, $$$$$).
C84400Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
CC499KChoose it when the part sees heat, or when it will be welded.
C84400 vs CC499K: 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
Bulk Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Reduction in Area
Hardness, Vickers
Same in both: Shear Modulus 36 GPa5.2 Msi · Poisson's Ratio 0.34 · Yield Strength (0.2% offset) 110 MPa16 ksi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 8.8 g/cm³0.32 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18 µm/m·K10 µin/in·°F
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
Same in both: Formability (cold) 10 / 100 · Polishability 60 / 100
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
Same in both: Thermal Shock Resistance Index 10
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 | C84400 | CC499K |
|---|---|---|
| CNC machining | Yes | — |
| Default condition | As Cast | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Chrome Plating | Yes | — |
| Electropolishing | Yes | — |
| Nickel Plating | Yes | — |
| Painting | Yes | — |
| Tin Plating | Yes | — |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C84400 vs CC499K — frequently asked
What is the difference between C84400 and CC499K?
Copper Alloy C84400 and CC499K are both copper alloy grades. Both yield at about 110 MPa — strength does not separate them. C84400 is the more ductile: elongation 26% versus 18% for CC499K, and CC499K is harder (65 HB vs 55 HB).
Which is cheaper, C84400 or CC499K?
CC499K is the lower-cost material: it sits in the high tier ($$$$) while C84400 is specialty ($$$$$). 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, C84400 or CC499K?
C84400. Its machinability rates excellent (90/100) against very good (78/100) for CC499K; for welding the order is CC499K first (poor, 30/100) then C84400 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C84400 and CC499K 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.