Copper Alloy C85500-M02 vs C85500-M05
Copper Alloy · C85500 temper comparison
C85500-M02 and C85500-M05 are two conditions of the same copper alloy grade, C85500: M02 (as centrifugally cast) versus M05 (as plaster cast). The chemistry is identical, so every difference below comes from the condition. C85500-M05 is the stronger of the two: yield strength 195 MPa (28.3 ksi) against 185 MPa (26.8 ksi) for C85500-M02, about 5% more. In exchange, C85500-M02 is the more ductile: elongation 30% versus 25% for C85500-M05, and C85500-M05 is harder (85 HB vs 80 HB).
C85500-M02Choose it when the part is bent, formed or impact-loaded.
C85500-M05Choose it when strength drives the design.
C85500-M02 vs C85500-M05: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: 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 8.4 g/cm³0.3 lb/in³ · Melting Point (Solidus) 899°C1,650 °F · Liquidus Temperature 905°C1,661 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 123 W/m·K71.1 BTU/hr·ft·°F · Specific Heat Capacity 375 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.8 µm/m·K11.6 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 27 % IACS · Electrical Resistivity 6.4×10⁻⁸ Ω·m2.52 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.
Machinability
Same in both: Weldability 30 / 100 · Castability 78 / 100 · Brazeability / Solderability 85 / 100 · Polishability 78 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 45 MJ/kg19,347 BTU/lb · Embodied Carbon (primary production) 3.2 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 85%
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.
C85500-M02 vs C85500-M05 — frequently asked
Is C85500-M05 stronger than C85500-M02?
Yes. C85500-M05 has a typical yield strength of 195 MPa (28.3 ksi) against 185 MPa (26.8 ksi) for C85500-M02 — about 5% more. Tensile strength is 435 MPa (63.1 ksi) vs 425 MPa (61.6 ksi).
Which condition does FabDigit quote by default, M02 or M05?
M01 is the default C85500 condition in the FabDigit quote flow (neither M02 nor M05). 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 C85500-M02 over C85500-M05?
Pick C85500-M02 when the part is bent, formed or impact-loaded. Pick C85500-M05 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C85500-M02 and C85500-M05 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.