Copper Alloy C90300-M02 vs C90300-M07
Copper Alloy · C90300 temper comparison
C90300-M02 and C90300-M07 are two conditions of the same copper alloy grade, C90300: M02 (as centrifugally cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C90300-M07 is the stronger of the two: yield strength 172 MPa (24.9 ksi) against 155 MPa (22.5 ksi) for C90300-M02, about 11% more. In exchange, C90300-M02 is the more ductile: elongation 25% versus 16% for C90300-M07, and C90300-M07 is harder (80 HB vs 75 HB).
C90300-M02Choose it when the part is bent, formed or impact-loaded.
C90300-M07Choose it when strength drives the design.
C90300-M02 vs C90300-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.
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 105 GPa15.2 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.34 · Tensile Strength (Ultimate) 330 MPa47.9 ksi
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 854°C1,569 °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 75 W/m·K43.3 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 190 J/g81.7 BTU/lb · Max Service Temperature (continuous) 260°C500 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 12 % IACS · Electrical Resistivity 1.44×10⁻⁷ Ω·m5.67 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V · Corrosion Resistance 68 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Weldability 35 / 100 · Castability 85 / 100 · Brazeability / Solderability 82 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 60 MJ/kg25,795 BTU/lb · Embodied Carbon (primary production) 4 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 75%
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.
C90300-M02 vs C90300-M07 — frequently asked
Is C90300-M07 stronger than C90300-M02?
Yes. C90300-M07 has a typical yield strength of 172 MPa (24.9 ksi) against 155 MPa (22.5 ksi) for C90300-M02 — about 11% more. Tensile strength is 330 MPa (47.9 ksi) vs 330 MPa (47.9 ksi).
Which condition does FabDigit quote by default, M02 or M07?
M01 is the default C90300 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.
When should I choose C90300-M02 over C90300-M07?
Pick C90300-M02 when the part is bent, formed or impact-loaded. Pick C90300-M07 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C90300-M02 and C90300-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.