Copper Alloy C18200-TD04 vs C18200-TH04
Copper Alloy · C18200 temper comparison
C18200-TD04 and C18200-TH04 are two conditions of the same copper alloy grade, C18200: TD04 (solution heat treated and cold worked, full hard) versus TH04 (TD04 and precipitation hardened). The chemistry is identical, so every difference below comes from the condition. C18200-TH04 is the stronger of the two: yield strength 448 MPa (65 ksi) against 360 MPa (52.2 ksi) for C18200-TD04, about 24% more; tensile strength follows at 517 MPa (75 ksi) vs 400 MPa (58 ksi). C18200-TH04 is the more ductile: elongation 16% versus 12% for C18200-TD04, and C18200-TH04 is harder (145 HB vs 120 HB). C18200-TH04 runs hotter in service (400°C vs 200°C continuous) and C18200-TH04 conducts heat better (320 W/m·K vs 200 W/m·K).
C18200-TH04Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
C18200-TD04 vs C18200-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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 133 GPa19.3 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,070°C1,958 °F · Liquidus Temperature 1,080°C1,976 °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 385 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 -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) -0.3 V · Corrosion Resistance 62 / 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 30 / 100 · Brazeability / Solderability 75 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.5 kg CO₂/kg · Embodied Water 350 L/kg41.9 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.
C18200-TD04 vs C18200-TH04 — frequently asked
Is C18200-TH04 stronger than C18200-TD04?
Yes. C18200-TH04 has a typical yield strength of 448 MPa (65 ksi) against 360 MPa (52.2 ksi) for C18200-TD04 — about 24% more. Tensile strength is 517 MPa (75 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, TD04 or TH04?
H is the default C18200 condition in the FabDigit quote flow (neither TD04 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 C18200-TD04 over C18200-TH04?
Pick C18200-TH04 when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C18200-TD04 and C18200-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.