Copper Alloy C63020-M20 vs C63020-O60
Copper Alloy · C63020 temper comparison
C63020-M20 and C63020-O60 are two conditions of the same copper alloy grade, C63020: M20 (as hot rolled) versus O60 (soft annealed). The chemistry is identical, so every difference below comes from the condition. C63020-M20 is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 450 MPa (65.3 ksi) for C63020-O60, about 16% more; tensile strength follows at 800 MPa (116 ksi) vs 760 MPa (110 ksi). In exchange, C63020-O60 is the more ductile: elongation 20% versus 17% for C63020-M20, and C63020-M20 is harder (225 HB vs 205 HB).
C63020-M20Choose it when strength drives the design.
C63020-O60Choose it when the part is bent, formed or impact-loaded.
C63020-M20 vs C63020-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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.32
Physical
Density and transition temperatures.
Same in both: Density 7.58 g/cm³0.27 lb/in³ · Melting Point (Solidus) 1,027°C1,881 °F · Liquidus Temperature 1,054°C1,929 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 419 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.2 µm/m·K9 µin/in·°F · Latent Heat of Fusion 220 J/g94.6 BTU/lb · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.27 V · Corrosion Resistance 78 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 60 / 100 · Brazeability / Solderability 35 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 30%
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.
C63020-M20 vs C63020-O60 — frequently asked
Is C63020-M20 stronger than C63020-O60?
Yes. C63020-M20 has a typical yield strength of 520 MPa (75.4 ksi) against 450 MPa (65.3 ksi) for C63020-O60 — about 16% more. Tensile strength is 800 MPa (116 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, M20 or O60?
TQ50 is the default C63020 condition in the FabDigit quote flow (neither M20 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 welds better, C63020-M20 or C63020-O60?
C63020-O60. Its weldability rates good (55/100) against fair (50/100) for C63020-M20.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C63020-M20 and C63020-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.