Copper Alloy CC380H-GM vs CC380H-GZ
Copper Alloy · CC380H temper comparison
CC380H-GM and CC380H-GZ are two conditions of the same copper alloy grade, CC380H: GM (permanent (gravity die) cast) versus GZ (centrifugally cast). The chemistry is identical, so every difference below comes from the condition. CC380H-GZ is the stronger of the two: yield strength 160 MPa (23.2 ksi) against 150 MPa (21.8 ksi) for CC380H-GM, about 7% more; tensile strength follows at 330 MPa (47.9 ksi) vs 310 MPa (45 ksi). CC380H-GZ is harder — 90 HB against 85 HB for CC380H-GM — which matters for wear surfaces and threads.
CC380H-GZChoose it when strength drives the design, or when surface hardness matters.
CC380H-GM vs CC380H-GZ: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 46 GPa6.7 Msi · Bulk Modulus 128 GPa18.6 Msi · Poisson's Ratio 0.33 · Elongation at Break 25%
Physical
Density and transition temperatures.
Same in both: Density 8.9 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,100°C2,012 °F · Liquidus Temperature 1,145°C2,093 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 42 W/m·K24.3 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.5 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 200 J/g86 BTU/lb · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in
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.
Same in both: Machinability 28 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Weldability 80 / 100 · Formability (cold) 15 / 100 · Castability 60 / 100 · Brazeability / Solderability 70 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 70 MJ/kg30,095 BTU/lb · Embodied Carbon (primary production) 5.2 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 40%
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.
CC380H-GM vs CC380H-GZ — frequently asked
Is CC380H-GZ stronger than CC380H-GM?
Yes. CC380H-GZ has a typical yield strength of 160 MPa (23.2 ksi) against 150 MPa (21.8 ksi) for CC380H-GM — about 7% more. Tensile strength is 330 MPa (47.9 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, GM or GZ?
GS is the default CC380H condition in the FabDigit quote flow (neither GM nor GZ). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose CC380H-GM over CC380H-GZ?
Pick CC380H-GZ when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC380H-GM and CC380H-GZ 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.