Copper Alloy C11000 vs C1220
Copper Alloy · grade comparison
Copper Alloy C11000 and C1220 are both copper alloy grades. Both yield at about 69 MPa — strength does not separate them. C11000 runs hotter in service (250°C vs 200°C continuous) and C11000 conducts heat better (391 W/m·K vs 339 W/m·K). On the shop floor, C1220 welds better (very good vs fair).
C11000Choose it when the part sees heat.
C1220Choose it when it will be welded.
C11000 vs C1220: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Charpy V-Notch Impact (RT)
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34 · Elongation at Break 45% · Reduction in Area 75% · Shear Strength 152 MPa22 ksi · Fatigue Strength (Endurance Limit) 76 MPa11 ksi · Hardness, Brinell 45 HB · Hardness, Vickers 50 HV
Physical
Density and transition temperatures.
Same in both: Density 8.94 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,065°C1,949 °F · Liquidus Temperature 1,083°C1,981 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -200°C-328 °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.
Weldability
Brazeability / Solderability
Polishability
Same in both: Machinability 25 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Formability (cold) 98 / 100 · Castability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 35%
Common Calculations
Ratios derived from the values above.
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 25 kN·m/kg · Specific Stiffness (E / density) 13.1 MN·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 | C11000 | C1220 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| 3D printing | Yes | — |
| Default condition | O | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Chrome Plating | Yes | — |
| Electropolishing | Yes | — |
| Nickel Plating | Yes | — |
| Painting | Yes | — |
| Tin Plating | Yes | — |
They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C11000 vs C1220 — frequently asked
What is the difference between C11000 and C1220?
Copper Alloy C11000 and C1220 are both copper alloy grades. Both yield at about 69 MPa — strength does not separate them. C11000 runs hotter in service (250°C vs 200°C continuous) and C11000 conducts heat better (391 W/m·K vs 339 W/m·K).
Which is cheaper, C11000 or C1220?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, C11000 or C1220?
C1220. Its weldability rates very good (80/100) against fair (35/100) for C11000.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C11000 and C1220 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.