Copper Alloy C89844-M02 vs C89844-M07
Copper Alloy · C89844 temper comparison
C89844-M02 and C89844-M07 are two conditions of the same copper alloy grade, C89844: M02 (as centrifugally cast) versus M07 (as continuous cast). The chemistry is identical, so every difference below comes from the condition. C89844-M07 is the stronger of the two: yield strength 150 MPa (21.8 ksi) against 120 MPa (17.4 ksi) for C89844-M02, about 25% more; tensile strength follows at 290 MPa (42.1 ksi) vs 265 MPa (38.4 ksi). In exchange, C89844-M02 is the more ductile: elongation 20% versus 13% for C89844-M07, and C89844-M07 is harder (68 HB vs 58 HB).
C89844-M02Choose it when the part is bent, formed or impact-loaded.
C89844-M07Choose it when strength drives the design.
C89844-M02 vs C89844-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)
Elongation at Break
Reduction in Area
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 95 GPa13.8 Msi · Shear Modulus 35 GPa5.1 Msi · Bulk Modulus 99 GPa14.4 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.6 g/cm³0.31 lb/in³ · Melting Point (Solidus) 843°C1,549 °F · Liquidus Temperature 954°C1,749 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 72 W/m·K41.6 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.5 µm/m·K11.4 µin/in·°F · Latent Heat of Fusion 200 J/g86 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 17 % IACS · Electrical Resistivity 1.01×10⁻⁷ Ω·m3.98 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V
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 30 / 100 · Castability 85 / 100 · Brazeability / Solderability 75 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 45%
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.
C89844-M02 vs C89844-M07 — frequently asked
Is C89844-M07 stronger than C89844-M02?
Yes. C89844-M07 has a typical yield strength of 150 MPa (21.8 ksi) against 120 MPa (17.4 ksi) for C89844-M02 — about 25% more. Tensile strength is 290 MPa (42.1 ksi) vs 265 MPa (38.4 ksi).
Which condition does FabDigit quote by default, M02 or M07?
M01 is the default C89844 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 C89844-M02 over C89844-M07?
Pick C89844-M02 when the part is bent, formed or impact-loaded. Pick C89844-M07 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C89844-M02 and C89844-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.