Copper Alloy C64710-M20 vs C64710-TH02
Copper Alloy · C64710 temper comparison
C64710-M20 and C64710-TH02 are two conditions of the same copper alloy grade, C64710: M20 (as hot rolled) versus TH02 (TD02 and precipitation hardened). The chemistry is identical, so every difference below comes from the condition. C64710-TH02 is the stronger of the two: yield strength 570 MPa (82.7 ksi) against 170 MPa (24.7 ksi) for C64710-M20, about 3.4 times as much; tensile strength follows at 660 MPa (95.7 ksi) vs 380 MPa (55.1 ksi). In exchange, C64710-M20 is the more ductile: elongation 35% versus 11% for C64710-TH02, and C64710-TH02 is harder (195 HB vs 90 HB). C64710-TH02 runs hotter in service (230°C vs 200°C continuous) and C64710-TH02 conducts heat better (48 W/m·K vs 30 W/m·K). On the shop floor, C64710-M20 welds better (very good vs good).
C64710-M20Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
C64710-TH02Choose it when strength drives the design, or when the part sees heat.
C64710-M20 vs C64710-TH02: 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 131 GPa19 Msi · Shear Modulus 48 GPa7 Msi · Bulk Modulus 125 GPa18.1 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,055°C1,931 °F · Liquidus Temperature 1,090°C1,994 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.6 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -196°C-321 °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 72 / 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 35 / 100 · Brazeability / Solderability 70 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 400 L/kg47.9 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.
C64710-M20 vs C64710-TH02 — frequently asked
Is C64710-TH02 stronger than C64710-M20?
Yes. C64710-TH02 has a typical yield strength of 570 MPa (82.7 ksi) against 170 MPa (24.7 ksi) for C64710-M20 — about 3.4 times as much. Tensile strength is 660 MPa (95.7 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, M20 or TH02?
TF00 is the default C64710 condition in the FabDigit quote flow (neither M20 nor TH02). 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, C64710-M20 or C64710-TH02?
C64710-TH02, by a small margin. Both rate poor for machinability — 34/100 against 27/100 for C64710-M20; for welding the order is C64710-M20 first (very good, 75/100) then C64710-TH02 (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C64710-M20 and C64710-TH02 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.