Copper Alloy C26000 vs C67300
Copper Alloy · grade comparison
Copper Alloy C26000 and C67300 are both copper alloy grades. C67300 is the stronger of the two: yield strength 310 MPa (45 ksi) against 105 MPa (15.2 ksi) for C26000, about 195% more; tensile strength follows at 600 MPa (87 ksi) vs 325 MPa (47.1 ksi). In exchange, C26000 is the more ductile: elongation 62% versus 22% for C67300, and C67300 is harder (150 HB vs 55 HB). C67300 is lighter (8.19 g/cm³ vs 8.53 g/cm³ for C26000) and C26000 is stiffer (110 GPa vs 103 GPa). On the shop floor, C67300 machines more easily (very good vs poor) and C26000 welds better (fair vs poor).
C26000Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
C67300Choose it when strength drives the design, or when weight is the constraint.
C26000 vs C67300: 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)
Hardness, Brinell
Hardness, Vickers
Reduction in Area
Hardness, Rockwell B
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
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Specific Heat Capacity 375 J/kg·K0.09 BTU/lb·°F · Max Service Temperature (continuous) 200°C392 °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) -0.28 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)
Same in both: Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 45%
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 | C26000 | C67300 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | O | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Chrome Plating | Yes | — |
| Electropolishing | Yes | — |
| Nickel Plating | Yes | — |
| Painting | Yes | — |
| Tin Plating | Yes | — |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C26000 vs C67300 — frequently asked
Is C67300 stronger than C26000?
Yes. C67300 has a typical yield strength of 310 MPa (45 ksi) against 105 MPa (15.2 ksi) for C26000 — about 195% more. Tensile strength is 600 MPa (87 ksi) vs 325 MPa (47.1 ksi).
Which is cheaper, C26000 or C67300?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, C26000 or C67300?
C67300. Its machinability rates very good (75/100) against poor (30/100) for C26000; for welding the order is C26000 first (fair, 40/100) then C67300 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C26000 and C67300 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.