Copper Alloy C91000-M02 vs C91000-M05
Copper Alloy · C91000 temper comparison
C91000-M02 and C91000-M05 are two conditions of the same copper alloy grade, C91000: M02 (as centrifugally cast) versus M05 (as plaster cast). The chemistry is identical, so every difference below comes from the condition. C91000-M02 is the stronger of the two: yield strength 165 MPa (23.9 ksi) against 150 MPa (21.8 ksi) for C91000-M05, about 10% more; tensile strength follows at 250 MPa (36.3 ksi) vs 225 MPa (32.6 ksi). C91000-M02 is the more ductile: elongation 2% versus 1.5% for C91000-M05.
C91000-M02Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C91000-M02 vs C91000-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
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 39 GPa5.7 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 830°C1,526 °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 47 W/m·K27.2 BTU/hr·ft·°F · Specific Heat Capacity 376 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) 250°C482 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 9 % IACS · Electrical Resistivity 1.9×10⁻⁷ Ω·m7.48 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 30 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 15 / 100 · Formability (cold) 5 / 100 · Castability 70 / 100 · Brazeability / Solderability 60 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 4.6 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.
C91000-M02 vs C91000-M05 — frequently asked
Is C91000-M02 stronger than C91000-M05?
Yes. C91000-M02 has a typical yield strength of 165 MPa (23.9 ksi) against 150 MPa (21.8 ksi) for C91000-M05 — about 10% more. Tensile strength is 250 MPa (36.3 ksi) vs 225 MPa (32.6 ksi).
Which condition does FabDigit quote by default, M02 or M05?
M01 is the default C91000 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 C91000-M02 over C91000-M05?
Pick C91000-M02 when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C91000-M02 and C91000-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.