Copper Alloy C91100-M04 vs C91100-M07
Copper Alloy · C91100 temper comparison
C91100-M04 and C91100-M07 are two conditions of the same copper alloy grade, C91100: M04 (as pressure die cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C91100-M07 is the stronger of the two: yield strength 193 MPa (28 ksi) against 180 MPa (26.1 ksi) for C91100-M04, about 7% more; tensile strength follows at 275 MPa (39.9 ksi) vs 255 MPa (37 ksi).
C91100-M07Choose it when strength drives the design.
C91100-M04 vs C91100-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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
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: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.34 · Elongation at Break 2%
Physical
Density and transition temperatures.
Same in both: Density 8.6 g/cm³0.31 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 37 W/m·K21.4 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.6 µm/m·K9.2 µin/in·°F · Max Service Temperature (continuous) 260°C500 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.15×10⁻⁷ Ω·m8.46 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.31 V · Corrosion Resistance 60 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Same in both: Machinability 45 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 15 / 100 · Formability (cold) 5 / 100 · Castability 70 / 100 · Brazeability / Solderability 75 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 87 MJ/kg37,403 BTU/lb · Embodied Carbon (primary production) 5.6 kg CO₂/kg · Embodied Water 220 L/kg26.4 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.
C91100-M04 vs C91100-M07 — frequently asked
Is C91100-M07 stronger than C91100-M04?
Yes. C91100-M07 has a typical yield strength of 193 MPa (28 ksi) against 180 MPa (26.1 ksi) for C91100-M04 — about 7% more. Tensile strength is 275 MPa (39.9 ksi) vs 255 MPa (37 ksi).
Which condition does FabDigit quote by default, M04 or M07?
M01 is the default C91100 condition in the FabDigit quote flow (neither M04 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 C91100-M04 over C91100-M07?
Pick C91100-M07 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C91100-M04 and C91100-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.