Copper Alloy C72700-TH02 vs C72700-TH04
Copper Alloy · C72700 temper comparison
C72700-TH02 and C72700-TH04 are two conditions of the same copper alloy grade, C72700: TH02 (TD02 and precipitation hardened) versus TH04 (TD04 and precipitation hardened). The chemistry is identical, so every difference below comes from the condition. C72700-TH04 is the stronger of the two: yield strength 900 MPa (131 ksi) against 810 MPa (117 ksi) for C72700-TH02, about 11% more; tensile strength follows at 950 MPa (138 ksi) vs 870 MPa (126 ksi). In exchange, C72700-TH02 is the more ductile: elongation 6% versus 4% for C72700-TH04, and C72700-TH04 is harder (29 HRC vs 26 HRC).
C72700-TH02Choose it when the part is bent, formed or impact-loaded.
C72700-TH04Choose it when strength drives the design.
C72700-TH02 vs C72700-TH04: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Rockwell B
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 50 GPa7.3 Msi · Bulk Modulus 125 GPa18.1 Msi · Poisson's Ratio 0.31
Physical
Density and transition temperatures.
Same in both: Density 8.86 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,060°C1,940 °F · Liquidus Temperature 1,120°C2,048 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 33 W/m·K19.1 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.5 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 200 J/g86 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11 % IACS · Electrical Resistivity 1.57×10⁻⁷ Ω·m6.18 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 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: Brazeability / Solderability 70 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 68 MJ/kg29,235 BTU/lb · Embodied Carbon (primary production) 4.8 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 25%
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.
C72700-TH02 vs C72700-TH04 — frequently asked
Is C72700-TH04 stronger than C72700-TH02?
Yes. C72700-TH04 has a typical yield strength of 900 MPa (131 ksi) against 810 MPa (117 ksi) for C72700-TH02 — about 11% more. Tensile strength is 950 MPa (138 ksi) vs 870 MPa (126 ksi).
Which condition does FabDigit quote by default, TH02 or TH04?
TH01 is the default C72700 condition in the FabDigit quote flow (neither TH02 nor TH04). 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.
When should I choose C72700-TH02 over C72700-TH04?
Pick C72700-TH02 when the part is bent, formed or impact-loaded. Pick C72700-TH04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C72700-TH02 and C72700-TH04 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.