Copper Alloy CC499K-GC vs CC499K-GM
Copper Alloy · CC499K temper comparison
CC499K-GC and CC499K-GM are two conditions of the same copper alloy grade, CC499K: GC (continuously cast) versus GM (permanent (chill) mould cast). The chemistry is identical, so every difference below comes from the condition. CC499K-GC is the stronger of the two: yield strength 150 MPa (21.8 ksi) against 130 MPa (18.9 ksi) for CC499K-GM, about 15% more; tensile strength follows at 300 MPa (43.5 ksi) vs 270 MPa (39.2 ksi). CC499K-GC is harder — 75 HB against 70 HB for CC499K-GM — which matters for wear surfaces and threads.
CC499K-GCChoose it when strength drives the design, or when surface hardness matters.
CC499K-GC vs CC499K-GM: 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)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 36 GPa5.2 Msi · Bulk Modulus 100 GPa14.5 Msi · Poisson's Ratio 0.34 · Charpy V-Notch Impact (RT) 13 J9.6 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 854°C1,569 °F · Liquidus Temperature 1,010°C1,850 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18 µm/m·K10 µin/in·°F · Latent Heat of Fusion 175 J/g75.2 BTU/lb · Max Service Temperature (continuous) 230°C446 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 15 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.27 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 30 / 100 · Castability 88 / 100 · Brazeability / Solderability 90 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 3.9 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 70%
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.
CC499K-GC vs CC499K-GM — frequently asked
Is CC499K-GC stronger than CC499K-GM?
Yes. CC499K-GC has a typical yield strength of 150 MPa (21.8 ksi) against 130 MPa (18.9 ksi) for CC499K-GM — about 15% more. Tensile strength is 300 MPa (43.5 ksi) vs 270 MPa (39.2 ksi).
Which condition does FabDigit quote by default, GC or GM?
GS is the default CC499K condition in the FabDigit quote flow (neither GC nor GM). 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.
Which is easier to machine, CC499K-GC or CC499K-GM?
CC499K-GC, by a small margin. Both rate very good for machinability — 82/100 against 76/100 for CC499K-GM.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC499K-GC and CC499K-GM 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.