Copper Alloy TBe1.9-T6 vs TBe1.9-TD04
Copper Alloy · TBe1.9 temper comparison
TBe1.9-T6 and TBe1.9-TD04 are two conditions of the same copper alloy grade, TBe1.9: T6 (solution heat treated and artificially aged) versus TD04 (solution heat treated and cold worked, full hard). The chemistry is identical, so every difference below comes from the condition. TBe1.9-T6 is the stronger of the two: yield strength 930 MPa (135 ksi) against 700 MPa (102 ksi) for TBe1.9-TD04, about 33% more; tensile strength follows at 1,070 MPa (155 ksi) vs 760 MPa (110 ksi). In exchange, TBe1.9-TD04 is the more ductile: elongation 4% versus 1.5% for TBe1.9-T6, and TBe1.9-T6 is harder (340 HB vs 230 HB). TBe1.9-T6 runs hotter in service (200°C vs 150°C continuous) and TBe1.9-T6 conducts electricity better (21 % IACS vs 17 % IACS).
TBe1.9-T6Choose it when strength drives the design, or when the part sees heat.
TBe1.9-TD04Choose it when the part is bent, formed or impact-loaded.
TBe1.9-T6 vs TBe1.9-TD04: 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.
Elastic (Young's) Modulus
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: Shear Modulus 50 GPa7.3 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.26 g/cm³0.3 lb/in³ · Melting Point (Solidus) 865°C1,589 °F · Liquidus Temperature 980°C1,796 °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 420 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.5 µm/m·K9.7 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
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 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 %)
Weldability
Formability (cold)
Same in both: Castability 60 / 100 · Brazeability / Solderability 65 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 130 MJ/kg55,890 BTU/lb · Embodied Carbon (primary production) 9 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.
TBe1.9-T6 vs TBe1.9-TD04 — frequently asked
Is TBe1.9-T6 stronger than TBe1.9-TD04?
Yes. TBe1.9-T6 has a typical yield strength of 930 MPa (135 ksi) against 700 MPa (102 ksi) for TBe1.9-TD04 — about 33% more. Tensile strength is 1,070 MPa (155 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, T6 or TD04?
TF00 is the default TBe1.9 condition in the FabDigit quote flow (neither T6 nor TD04). 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, TBe1.9-T6 or TBe1.9-TD04?
TBe1.9-TD04. Its weldability rates fair (42/100) against fair (35/100) for TBe1.9-T6.
Ready to make it?
Upload a CAD file and FabDigit prices the part in TBe1.9-T6 and TBe1.9-TD04 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.