Copper Alloy C90300-M02 vs C90300-M06
Copper Alloy · C90300 temper comparison
C90300-M02 and C90300-M06 are two conditions of the same copper alloy grade, C90300: M02 (as centrifugally cast) versus M06 (as investment cast). The chemistry is identical, so every difference below comes from the condition. C90300-M02 is the stronger of the two: yield strength 155 MPa (22.5 ksi) against 140 MPa (20.3 ksi) for C90300-M06, about 11% more; tensile strength follows at 330 MPa (47.9 ksi) vs 295 MPa (42.8 ksi). C90300-M02 is harder — 75 HB against 70 HB for C90300-M06 — which matters for wear surfaces and threads.
C90300-M02Choose it when strength drives the design, or when surface hardness matters.
C90300-M02 vs C90300-M06: 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)
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Same in both: Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.34 · Elongation at Break 25%
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.
Thermal Conductivity
Same in both: 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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 55 / 100 · 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-M06 — frequently asked
Is C90300-M02 stronger than C90300-M06?
Yes. C90300-M02 has a typical yield strength of 155 MPa (22.5 ksi) against 140 MPa (20.3 ksi) for C90300-M06 — about 11% more. Tensile strength is 330 MPa (47.9 ksi) vs 295 MPa (42.8 ksi).
Which condition does FabDigit quote by default, M02 or M06?
M01 is the default C90300 condition in the FabDigit quote flow (neither M02 nor M06). 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-M06?
Pick C90300-M02 when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C90300-M02 and C90300-M06 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.