Copper Alloy C90400-M02 vs C90400-M07
Copper Alloy · C90400 temper comparison
C90400-M02 and C90400-M07 are two conditions of the same copper alloy grade, C90400: M02 (as centrifugally cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C90400-M07 is the stronger of the two: yield strength 180 MPa (26.1 ksi) against 170 MPa (24.7 ksi) for C90400-M02, about 6% more. C90400-M07 is harder — 90 HB against 85 HB for C90400-M02 — which matters for wear surfaces and threads.
C90400-M07Choose it when strength drives the design, or when surface hardness matters.
C90400-M02 vs C90400-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 105 GPa15.2 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.34 · Elongation at Break 12%
Physical
Density and transition temperatures.
Same in both: Density 8.75 g/cm³0.32 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.
Thermal Conductivity
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18.4 µm/m·K10.2 µin/in·°F · Latent Heat of Fusion 180 J/g77.4 BTU/lb · Max Service Temperature (continuous) 260°C500 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.31 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 30 / 100 · Formability (cold) 5 / 100 · Castability 85 / 100 · Brazeability / Solderability 80 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 4.2 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 65%
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.
C90400-M02 vs C90400-M07 — frequently asked
Is C90400-M07 stronger than C90400-M02?
Yes. C90400-M07 has a typical yield strength of 180 MPa (26.1 ksi) against 170 MPa (24.7 ksi) for C90400-M02 — about 6% more. Tensile strength is 350 MPa (50.8 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, M02 or M07?
M01 is the default C90400 condition in the FabDigit quote flow (neither M02 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.
Which is easier to machine, C90400-M02 or C90400-M07?
C90400-M07, by a small margin. Both rate fair for machinability — 52/100 against 47/100 for C90400-M02.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C90400-M02 and C90400-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.