Copper Alloy CC494K-GM vs CC494K-GS
Copper Alloy · CC494K temper comparison
CC494K-GM and CC494K-GS are two conditions of the same copper alloy grade, CC494K: GM (chill / permanent-mould cast) versus GS (sand cast). The chemistry is identical, so every difference below comes from the condition. CC494K-GM is the stronger of the two: yield strength 95 MPa (13.8 ksi) against 85 MPa (12.3 ksi) for CC494K-GS, about 12% more; tensile strength follows at 200 MPa (29 ksi) vs 180 MPa (26.1 ksi). In exchange, CC494K-GS is the more ductile: elongation 10% versus 8% for CC494K-GM, and CC494K-GM is harder (20 HRB vs 18 HRB).
CC494K-GMChoose it when strength drives the design.
CC494K-GSChoose it when the part is bent, formed or impact-loaded.
CC494K-GM vs CC494K-GS: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 30 GPa4.4 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.9 g/cm³0.32 lb/in³ · Melting Point (Solidus) 855°C1,571 °F · Liquidus Temperature 1,000°C1,832 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 71 W/m·K41 BTU/hr·ft·°F · 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 170 J/g73.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 15 % IACS · Electrical Resistivity 1.15×10⁻⁷ Ω·m4.53 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 12 / 100 · Formability (cold) 8 / 100 · Castability 82 / 100 · Brazeability / Solderability 40 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 60 MJ/kg25,795 BTU/lb · Embodied Carbon (primary production) 4 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 60%
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.
CC494K-GM vs CC494K-GS — frequently asked
Is CC494K-GM stronger than CC494K-GS?
Yes. CC494K-GM has a typical yield strength of 95 MPa (13.8 ksi) against 85 MPa (12.3 ksi) for CC494K-GS — about 12% more. Tensile strength is 200 MPa (29 ksi) vs 180 MPa (26.1 ksi).
Which condition does FabDigit quote by default, GM or GS?
GC is the default CC494K condition in the FabDigit quote flow (neither GM nor GS). 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 CC494K-GM over CC494K-GS?
Pick CC494K-GM when strength drives the design. Pick CC494K-GS when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CC494K-GM and CC494K-GS 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.