Copper Alloy C67300-M11 vs C67300-O60
Copper Alloy · C67300 temper comparison
C67300-M11 and C67300-O60 are two conditions of the same copper alloy grade, C67300: M11 (as forged and quenched) versus O60 (soft annealed). The chemistry is identical, so every difference below comes from the condition. C67300-M11 is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 215 MPa (31.2 ksi) for C67300-O60, about 35% more; tensile strength follows at 570 MPa (82.7 ksi) vs 490 MPa (71.1 ksi). In exchange, C67300-O60 is the more ductile: elongation 33% versus 25% for C67300-M11, and C67300-M11 is harder (140 HB vs 115 HB).
C67300-M11Choose it when strength drives the design.
C67300-O60Choose it when the part is bent, formed or impact-loaded.
C67300-M11 vs C67300-O60: 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)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.19 g/cm³0.3 lb/in³ · Melting Point (Solidus) 855°C1,571 °F · Liquidus Temperature 880°C1,616 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 60 W/m·K34.7 BTU/hr·ft·°F · Specific Heat Capacity 375 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.3 µm/m·K11.3 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 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 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.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 20 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 52 MJ/kg22,356 BTU/lb · Embodied Carbon (primary production) 3.3 kg CO₂/kg · Embodied Water 250 L/kg30 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.
C67300-M11 vs C67300-O60 — frequently asked
Is C67300-M11 stronger than C67300-O60?
Yes. C67300-M11 has a typical yield strength of 290 MPa (42.1 ksi) against 215 MPa (31.2 ksi) for C67300-O60 — about 35% more. Tensile strength is 570 MPa (82.7 ksi) vs 490 MPa (71.1 ksi).
Which condition does FabDigit quote by default, M11 or O60?
M30 is the default C67300 condition in the FabDigit quote flow (neither M11 nor O60). 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, C67300-M11 or C67300-O60?
C67300-M11, by a small margin. Both rate very good for machinability — 75/100 against 70/100 for C67300-O60.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C67300-M11 and C67300-O60 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.