Copper Alloy C82400-M vs C82400-TB00
Copper Alloy · C82400 temper comparison
C82400-M and C82400-TB00 are two conditions of the same copper alloy grade, C82400: M (thermomechanically controlled processed) versus TB00 (solution heat treated). The chemistry is identical, so every difference below comes from the condition. Both yield at about 240 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (thermomechanically controlled processed versus solution heat treated). C82400-TB00 is the more ductile: elongation 30% versus 20% for C82400-M, and C82400-TB00 is harder (130 HB vs 105 HB). On the shop floor, C82400-M machines more easily (fair vs poor) and C82400-M welds better (good vs fair).
C82400-MChoose it when the part is machined in volume, or when it will be welded.
C82400-TB00Choose it when the part is bent, formed or impact-loaded.
C82400-M vs C82400-TB00: 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.
Shear Modulus
Tensile Strength (Ultimate)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 128 GPa18.6 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.3 · Yield Strength (0.2% offset) 240 MPa34.8 ksi · Compressive Strength 950 MPa138 ksi · Charpy V-Notch Impact (RT) 5 J3.7 ft·lbf · Hardness, Rockwell C 38 HRC · Hardness, Vickers 375 HV
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Specific Heat Capacity 419 J/kg·K0.1 BTU/lb·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 150°C302 °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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 350 L/kg41.9 gal/lb
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.
C82400-M vs C82400-TB00 — frequently asked
What is the difference between C82400-M and C82400-TB00?
C82400-M and C82400-TB00 are two conditions of the same copper alloy grade, C82400: M (thermomechanically controlled processed) versus TB00 (solution heat treated). The chemistry is identical, so every difference below comes from the condition. Both yield at about 240 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (thermomechanically controlled processed versus solution heat treated).
Which condition does FabDigit quote by default, M or TB00?
TF00 is the default C82400 condition in the FabDigit quote flow (neither M nor TB00). 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, C82400-M or C82400-TB00?
C82400-M. Its machinability rates fair (50/100) against poor (28/100) for C82400-TB00; for welding the order is C82400-M first (good, 55/100) then C82400-TB00 (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C82400-M and C82400-TB00 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.