Copper Alloy C75700 vs C76200
Copper Alloy · grade comparison
Copper Alloy C75700 and C76200 are both copper alloy grades. C76200 is the stronger of the two: yield strength 448 MPa (65 ksi) against 420 MPa (60.9 ksi) for C75700, about 7% more. C76200 is harder — 155 HB against 135 HB for C75700 — which matters for wear surfaces and threads. C75700 runs hotter in service (200°C vs 175°C continuous) and C75700 conducts heat better (45 W/m·K vs 29 W/m·K). On the shop floor, C76200 welds better (50 vs 40 out of 100).
C75700Choose it when the part sees heat.
C76200Choose it when strength drives the design, or when surface hardness matters.
C75700 vs C76200: 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.
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 124 GPa18 Msi · Shear Modulus 46 GPa6.7 Msi · Poisson's Ratio 0.34 · Elongation at Break 10%
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
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.2 µm/m·K9 µin/in·°F · 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
Formability (cold)
Brazeability / Solderability
Same in both: Machinability 30 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 40%
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 | C75700 | C76200 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
C75700 vs C76200 — frequently asked
Is C76200 stronger than C75700?
Yes. C76200 has a typical yield strength of 448 MPa (65 ksi) against 420 MPa (60.9 ksi) for C75700 — about 7% more. Tensile strength is 517 MPa (75 ksi) vs 496 MPa (71.9 ksi).
Which is cheaper, C75700 or C76200?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, C75700 or C76200?
C76200. Its weldability rates fair (50/100) against fair (40/100) for C75700.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C75700 and C76200 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.