Copper Alloy CC493K-GC vs CC493K-GM
Copper Alloy · CC493K temper comparison
CC493K-GC and CC493K-GM are two conditions of the same copper alloy grade, CC493K: GC (continuously cast bar / tube) versus GM (permanent-mould (chill) cast). The chemistry is identical, so every difference below comes from the condition. CC493K-GC is the stronger of the two: yield strength 155 MPa (22.5 ksi) against 145 MPa (21 ksi) for CC493K-GM, about 7% more; tensile strength follows at 300 MPa (43.5 ksi) vs 280 MPa (40.6 ksi). CC493K-GC is harder — 75 HB against 70 HB for CC493K-GM — which matters for wear surfaces and threads.
CC493K-GCChoose it when strength drives the design, or when surface hardness matters.
CC493K-GC vs CC493K-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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 97 GPa14.1 Msi · Shear Modulus 37 GPa5.4 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 855°C1,571 °F · Liquidus Temperature 975°C1,787 °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) 18.4 µm/m·K10.2 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 12 % IACS · Electrical Resistivity 1.44×10⁻⁷ Ω·m5.67 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Same in both: Machinability 85 / 100 · Machinability Rating (AISI 1212 = 100 %) 80% · Weldability 15 / 100 · Formability (cold) 8 / 100 · Castability 88 / 100 · Brazeability / Solderability 62 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 75%
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.
CC493K-GC vs CC493K-GM — frequently asked
Is CC493K-GC stronger than CC493K-GM?
Yes. CC493K-GC has a typical yield strength of 155 MPa (22.5 ksi) against 145 MPa (21 ksi) for CC493K-GM — about 7% more. Tensile strength is 300 MPa (43.5 ksi) vs 280 MPa (40.6 ksi).
Which condition does FabDigit quote by default, GC or GM?
GC is the default CC493K condition in the FabDigit quote flow. 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 CC493K-GC over CC493K-GM?
Pick CC493K-GC when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC493K-GC and CC493K-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.