Copper Alloy C32000 vs C33000
Copper Alloy · grade comparison
Copper Alloy C32000 and C33000 are both copper alloy grades. C32000 is the stronger of the two: yield strength 270 MPa (39.2 ksi) against 110 MPa (16 ksi) for C33000, about 145% more. In exchange, C33000 is the more ductile: elongation 55% versus 25% for C32000, and C32000 is harder (100 HB vs 55 HB). C33000 is lighter (8.47 g/cm³ vs 8.75 g/cm³ for C32000) and C32000 is stiffer (117 GPa vs 103 GPa). On the shop floor, C32000 machines more easily (80 vs 70 out of 100).
C32000Choose it when strength drives the design, or when the part is machined in volume.
C33000Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
C32000 vs C33000: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Reduction in Area
Charpy V-Notch Impact (RT)
Hardness, Vickers
Same in both: Poisson's Ratio 0.34
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)
Same in both: Min Service Temperature -200°C-328 °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 Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg
Common Calculations
Ratios derived from the values above.
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 40 kN·m/kg
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 | C32000 | C33000 |
|---|---|---|
| CNC machining | — | Yes |
| Sheet metal | — | Yes |
| Default condition | — | O |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | 0.8 mm |
| Best machined surface | — | Ra 1.6 µm |
| Chrome Plating | — | Yes |
| Electropolishing | — | Yes |
| Nickel Plating | — | Yes |
| Painting | — | Yes |
| Tin Plating | — | Yes |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C32000 vs C33000 — frequently asked
Is C32000 stronger than C33000?
Yes. C32000 has a typical yield strength of 270 MPa (39.2 ksi) against 110 MPa (16 ksi) for C33000 — about 145% more. Tensile strength is 350 MPa (50.8 ksi) vs 340 MPa (49.3 ksi).
Which is cheaper, C32000 or C33000?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, C32000 or C33000?
C32000, by a small margin. Both rate very good for machinability — 80/100 against 70/100 for C33000; for welding the order is C33000 first (poor, 25/100) then C32000 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C32000 and C33000 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.