Copper Alloy C90900-M01 vs C90900-M02
Copper Alloy · C90900 temper comparison
C90900-M01 and C90900-M02 are two conditions of the same copper alloy grade, C90900: M01 (as sand cast) versus M02 (as centrifugally cast). The chemistry is identical, so every difference below comes from the condition. C90900-M02 is the stronger of the two: yield strength 170 MPa (24.7 ksi) against 152 MPa (22 ksi) for C90900-M01, about 12% more; tensile strength follows at 305 MPa (44.2 ksi) vs 275 MPa (39.9 ksi). C90900-M02 is the more ductile: elongation 6% versus 5% for C90900-M01, and C90900-M02 is harder (90 HB vs 80 HB).
C90900-M02Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C90900-M01 vs C90900-M02: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.79 g/cm³0.32 lb/in³ · Melting Point (Solidus) 830°C1,526 °F · Liquidus Temperature 998°C1,828 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 71 W/m·K41 BTU/hr·ft·°F · 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 170 J/g73.1 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 10.5 % IACS · Electrical Resistivity 1.64×10⁻⁷ Ω·m6.46 µΩ·in
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.
Same in both: Machinability 32 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 22 / 100 · Formability (cold) 5 / 100 · Castability 72 / 100 · Brazeability / Solderability 75 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 85 MJ/kg36,543 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 320 L/kg38.3 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.
C90900-M01 vs C90900-M02 — frequently asked
Is C90900-M02 stronger than C90900-M01?
Yes. C90900-M02 has a typical yield strength of 170 MPa (24.7 ksi) against 152 MPa (22 ksi) for C90900-M01 — about 12% more. Tensile strength is 305 MPa (44.2 ksi) vs 275 MPa (39.9 ksi).
Which condition does FabDigit quote by default, M01 or M02?
M01 is the default C90900 condition in the FabDigit quote flow. 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 C90900-M01 over C90900-M02?
Pick C90900-M02 when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C90900-M01 and C90900-M02 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.