Copper Alloy C86400-M02 vs C86400-M05
Copper Alloy · C86400 temper comparison
C86400-M02 and C86400-M05 are two conditions of the same copper alloy grade, C86400: M02 (as centrifugally cast) versus M05 (as plaster cast). The chemistry is identical, so every difference below comes from the condition. C86400-M05 is the stronger of the two: yield strength 221 MPa (32.1 ksi) against 207 MPa (30 ksi) for C86400-M02, about 7% more. In exchange, C86400-M02 is the more ductile: elongation 20% versus 18% for C86400-M05, and C86400-M05 is harder (100 HB vs 95 HB).
C86400-M02Choose it when the part is bent, formed or impact-loaded.
C86400-M05Choose it when strength drives the design.
C86400-M02 vs C86400-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.
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 100 GPa14.5 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.34 · Tensile Strength (Ultimate) 483 MPa70.1 ksi · Shear Strength 330 MPa47.9 ksi
Physical
Density and transition temperatures.
Same in both: Density 8.3 g/cm³0.3 lb/in³ · Melting Point (Solidus) 862°C1,584 °F · Liquidus Temperature 880°C1,616 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 87 W/m·K50.3 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.6 µm/m·K12 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 20 % IACS · Electrical Resistivity 8.6×10⁻⁸ Ω·m3.39 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V · Corrosion Resistance 53 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 65 / 100 · Machinability Rating (AISI 1212 = 100 %) 65% · Weldability 30 / 100 · Castability 80 / 100 · Brazeability / Solderability 70 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 47 MJ/kg20,206 BTU/lb · Embodied Carbon (primary production) 2.9 kg CO₂/kg · Embodied Water 320 L/kg38.3 gal/lb · Typical Recycled Content 80%
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.
C86400-M02 vs C86400-M05 — frequently asked
Is C86400-M05 stronger than C86400-M02?
Yes. C86400-M05 has a typical yield strength of 221 MPa (32.1 ksi) against 207 MPa (30 ksi) for C86400-M02 — about 7% more. Tensile strength is 483 MPa (70.1 ksi) vs 483 MPa (70.1 ksi).
Which condition does FabDigit quote by default, M02 or M05?
M01 is the default C86400 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 C86400-M02 over C86400-M05?
Pick C86400-M02 when the part is bent, formed or impact-loaded. Pick C86400-M05 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C86400-M02 and C86400-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.