Copper Alloy C87800-M04 vs C87800-M05
Copper Alloy · C87800 temper comparison
C87800-M04 and C87800-M05 are two conditions of the same copper alloy grade, C87800: M04 (as pressure die cast) versus M05 (as plaster cast). The chemistry is identical, so every difference below comes from the condition. C87800-M04 is the stronger of the two: yield strength 345 MPa (50 ksi) against 260 MPa (37.7 ksi) for C87800-M05, about 33% more; tensile strength follows at 585 MPa (84.8 ksi) vs 480 MPa (69.6 ksi). C87800-M04 is the more ductile: elongation 25% versus 20% for C87800-M05, and C87800-M04 is harder (160 HB vs 135 HB).
C87800-M04Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C87800-M04 vs C87800-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.
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: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 8.3 g/cm³0.3 lb/in³ · Melting Point (Solidus) 821°C1,510 °F · Liquidus Temperature 1,010°C1,850 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 28 W/m·K16.2 BTU/hr·ft·°F · Specific Heat Capacity 376 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18.4 µm/m·K10.2 µin/in·°F · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 6.7 % IACS · Electrical Resistivity 2.57×10⁻⁷ Ω·m10.1 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V · Corrosion Resistance 70 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Same in both: Machinability 42 / 100 · Machinability Rating (AISI 1212 = 100 %) 40% · Weldability 55 / 100 · Formability (cold) 25 / 100 · Castability 92 / 100 · Brazeability / Solderability 70 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 55%
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.
C87800-M04 vs C87800-M05 — frequently asked
Is C87800-M04 stronger than C87800-M05?
Yes. C87800-M04 has a typical yield strength of 345 MPa (50 ksi) against 260 MPa (37.7 ksi) for C87800-M05 — about 33% more. Tensile strength is 585 MPa (84.8 ksi) vs 480 MPa (69.6 ksi).
Which condition does FabDigit quote by default, M04 or M05?
M04 is the default C87800 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 C87800-M04 over C87800-M05?
Pick C87800-M04 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 C87800-M04 and C87800-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.