Copper Alloy C81800-TB00 vs C81800-TF00
Copper Alloy · C81800 temper comparison
C81800-TB00 and C81800-TF00 are two conditions of the same copper alloy grade, C81800: TB00 (solution heat treated) versus TF00 (solution heat treated and precipitation hardened). The chemistry is identical, so every difference below comes from the condition. C81800-TF00 is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 150 MPa (21.8 ksi) for C81800-TB00, about 3.7 times as much; tensile strength follows at 725 MPa (105 ksi) vs 330 MPa (47.9 ksi). In exchange, C81800-TB00 is the more ductile: elongation 28% versus 8% for C81800-TF00, and C81800-TF00 is harder (220 HB vs 90 HB). C81800-TF00 runs hotter in service (300°C vs 150°C continuous) and C81800-TF00 conducts heat better (208 W/m·K vs 120 W/m·K).
C81800-TB00Choose it when the part is bent, formed or impact-loaded.
C81800-TF00Choose it when strength drives the design, or when the part sees heat.
C81800-TB00 vs C81800-TF00: 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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 134 GPa19.4 Msi · Shear Modulus 50 GPa7.3 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.3 · Compressive Strength 570 MPa82.7 ksi · Shear Strength 450 MPa65.3 ksi · Hardness, Rockwell C 23 HRC · Hardness, Vickers 235 HV
Physical
Density and transition temperatures.
Same in both: Density 8.61 g/cm³0.31 lb/in³ · Melting Point (Solidus) 1,016°C1,861 °F · Liquidus Temperature 1,077°C1,971 °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 419 J/kg·K0.1 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 -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 3.8×10⁻⁸ Ω·m1.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V · Corrosion Resistance 65 / 100
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 65 / 100 · Castability 80 / 100 · Brazeability / Solderability 75 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 70 MJ/kg30,095 BTU/lb · Embodied Carbon (primary production) 5 kg CO₂/kg · Embodied Water 350 L/kg41.9 gal/lb · Typical Recycled Content 35%
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.
C81800-TB00 vs C81800-TF00 — frequently asked
Is C81800-TF00 stronger than C81800-TB00?
Yes. C81800-TF00 has a typical yield strength of 550 MPa (79.8 ksi) against 150 MPa (21.8 ksi) for C81800-TB00 — about 3.7 times as much. Tensile strength is 725 MPa (105 ksi) vs 330 MPa (47.9 ksi).
Which condition does FabDigit quote by default, TB00 or TF00?
TF00 is the default C81800 condition in the FabDigit quote flow. 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, C81800-TB00 or C81800-TF00?
C81800-TB00, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for C81800-TF00.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C81800-TB00 and C81800-TF00 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.