Copper Alloy C80900-M02 vs C80900-M04
Copper Alloy · C80900 temper comparison
C80900-M02 and C80900-M04 are two conditions of the same copper alloy grade, C80900: M02 (as centrifugally cast) versus M04 (as pressure die cast). The chemistry is identical, so every difference below comes from the condition. C80900-M04 is the stronger of the two: yield strength 85 MPa (12.3 ksi) against 70 MPa (10.2 ksi) for C80900-M02, about 21% more; tensile strength follows at 200 MPa (29 ksi) vs 190 MPa (27.6 ksi). In exchange, C80900-M02 is the more ductile: elongation 35% versus 30% for C80900-M04, and C80900-M04 is harder (52 HB vs 48 HB).
C80900-M02Choose it when the part is bent, formed or impact-loaded.
C80900-M04Choose it when strength drives the design.
C80900-M02 vs C80900-M04: 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, Vickers
Same in both: Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.94 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) 17.6 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °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) -0.33 V · Corrosion Resistance 62 / 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 70 / 100 · Castability 45 / 100 · Brazeability / Solderability 90 / 100 · Polishability 75 / 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 250 L/kg30 gal/lb · Typical Recycled Content 35%
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.
C80900-M02 vs C80900-M04 — frequently asked
Is C80900-M04 stronger than C80900-M02?
Yes. C80900-M04 has a typical yield strength of 85 MPa (12.3 ksi) against 70 MPa (10.2 ksi) for C80900-M02 — about 21% more. Tensile strength is 200 MPa (29 ksi) vs 190 MPa (27.6 ksi).
Which condition does FabDigit quote by default, M02 or M04?
M01 is the default C80900 condition in the FabDigit quote flow (neither M02 nor M04). 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 C80900-M02 over C80900-M04?
Pick C80900-M02 when the part is bent, formed or impact-loaded. Pick C80900-M04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C80900-M02 and C80900-M04 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.