Copper Alloy CC380H vs CC381H
Copper Alloy · grade comparison
Copper Alloy CC380H and CC381H are both copper alloy grades. CC381H is the stronger of the two: yield strength 255 MPa (37 ksi) against 140 MPa (20.3 ksi) for CC380H, about 82% more; tensile strength follows at 470 MPa (68.2 ksi) vs 300 MPa (43.5 ksi). CC381H is harder — 140 HB against 80 HB for CC380H — which matters for wear surfaces and threads. CC381H is stiffer (150 GPa vs 124 GPa) and CC380H conducts heat better (42 W/m·K vs 28 W/m·K).
CC381HChoose it when strength drives the design, or when surface hardness matters.
CC380H vs CC381H: 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)
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Poisson's Ratio 0.33 · Elongation at Break 25% · Reduction in Area 25%
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 8.9 g/cm³0.32 lb/in³
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
Min Service Temperature
Same in both: Max Service Temperature (continuous) 300°C572 °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
Formability (cold)
Polishability
Same in both: Castability 60 / 100 · Brazeability / Solderability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 300 L/kg35.9 gal/lb · 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
Same in both: Thermal Shock Resistance Index 6
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 | CC380H | CC381H |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
CC380H vs CC381H — frequently asked
Is CC381H stronger than CC380H?
Yes. CC381H has a typical yield strength of 255 MPa (37 ksi) against 140 MPa (20.3 ksi) for CC380H — about 82% more. Tensile strength is 470 MPa (68.2 ksi) vs 300 MPa (43.5 ksi).
Which is cheaper, CC380H or CC381H?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, CC380H or CC381H?
CC380H. Its weldability rates very good (80/100) against very good (75/100) for CC381H.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC380H and CC381H 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.