Copper Alloy C81100-M05 vs C81100-M07
Copper Alloy · C81100 temper comparison
C81100-M05 and C81100-M07 are two conditions of the same copper alloy grade, C81100: M05 (as plaster cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C81100-M07 is the stronger of the two: yield strength 76 MPa (11 ksi) against 62 MPa (8.99 ksi) for C81100-M05, about 23% more; tensile strength follows at 195 MPa (28.3 ksi) vs 179 MPa (26 ksi). In exchange, C81100-M05 is the more ductile: elongation 42% versus 35% for C81100-M07, and C81100-M07 is harder (50 HB vs 45 HB).
C81100-M05Choose it when the part is bent, formed or impact-loaded.
C81100-M07Choose it when strength drives the design.
C81100-M05 vs C81100-M07: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 43 GPa6.2 Msi · Bulk Modulus 138 GPa20 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,065°C1,949 °F · Liquidus Temperature 1,083°C1,981 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.7 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.36 V · Corrosion Resistance 68 / 100
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 45 / 100 · Castability 38 / 100 · Brazeability / Solderability 92 / 100 · Polishability 78 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 280 L/kg33.6 gal/lb · Typical Recycled Content 45%
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.
C81100-M05 vs C81100-M07 — frequently asked
Is C81100-M07 stronger than C81100-M05?
Yes. C81100-M07 has a typical yield strength of 76 MPa (11 ksi) against 62 MPa (8.99 ksi) for C81100-M05 — about 23% more. Tensile strength is 195 MPa (28.3 ksi) vs 179 MPa (26 ksi).
Which condition does FabDigit quote by default, M05 or M07?
M01 is the default C81100 condition in the FabDigit quote flow (neither M05 nor M07). 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 C81100-M05 over C81100-M07?
Pick C81100-M05 when the part is bent, formed or impact-loaded. Pick C81100-M07 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C81100-M05 and C81100-M07 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.