Copper Alloy C91600-M04 vs C91600-M07
Copper Alloy · C91600 temper comparison
C91600-M04 and C91600-M07 are two conditions of the same copper alloy grade, C91600: M04 (as pressure die cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C91600-M04 is the stronger of the two: yield strength 190 MPa (27.6 ksi) against 172 MPa (24.9 ksi) for C91600-M07, about 10% more; tensile strength follows at 330 MPa (47.9 ksi) vs 310 MPa (45 ksi). C91600-M04 is harder — 115 HB against 105 HB for C91600-M07 — which matters for wear surfaces and threads.
C91600-M04Choose it when strength drives the design, or when surface hardness matters.
C91600-M04 vs C91600-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)
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 41 GPa5.9 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34 · Elongation at Break 10%
Physical
Density and transition temperatures.
Same in both: Density 8.8 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 47 W/m·K27.2 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) 250°C482 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11 % IACS · Electrical Resistivity 1.57×10⁻⁷ Ω·m6.18 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.31 V · Corrosion Resistance 66 / 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 20 / 100 · Castability 75 / 100 · Brazeability / Solderability 70 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 4 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.
C91600-M04 vs C91600-M07 — frequently asked
Is C91600-M04 stronger than C91600-M07?
Yes. C91600-M04 has a typical yield strength of 190 MPa (27.6 ksi) against 172 MPa (24.9 ksi) for C91600-M07 — about 10% more. Tensile strength is 330 MPa (47.9 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, M04 or M07?
M07 is the default C91600 condition in the FabDigit quote flow. 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 C91600-M04 over C91600-M07?
Pick C91600-M04 when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C91600-M04 and C91600-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.