Copper Alloy C17450-TH04 vs C17450-TM02
Copper Alloy · C17450 temper comparison
C17450-TH04 and C17450-TM02 are two conditions of the same copper alloy grade, C17450: TH04 (TD04 and precipitation hardened) versus TM02 (mill hardened, half hard). The chemistry is identical, so every difference below comes from the condition. C17450-TH04 is the stronger of the two: yield strength 690 MPa (100 ksi) against 515 MPa (74.7 ksi) for C17450-TM02, about 34% more; tensile strength follows at 760 MPa (110 ksi) vs 620 MPa (89.9 ksi). In exchange, C17450-TM02 is the more ductile: elongation 15% versus 10% for C17450-TH04, and C17450-TH04 is harder (218 HB vs 175 HB).
C17450-TH04Choose it when strength drives the design.
C17450-TM02Choose it when the part is bent, formed or impact-loaded.
C17450-TH04 vs C17450-TM02: 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 138 GPa20 Msi · Shear Modulus 53 GPa7.7 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,030°C1,886 °F · Liquidus Temperature 1,070°C1,958 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 420 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 · Max Service Temperature (continuous) 200°C392 °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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V · Corrosion Resistance 58 / 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 75 / 100 · Polishability 78 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 75 MJ/kg32,244 BTU/lb · Embodied Carbon (primary production) 5.2 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.
C17450-TH04 vs C17450-TM02 — frequently asked
Is C17450-TH04 stronger than C17450-TM02?
Yes. C17450-TH04 has a typical yield strength of 690 MPa (100 ksi) against 515 MPa (74.7 ksi) for C17450-TM02 — about 34% more. Tensile strength is 760 MPa (110 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, TH04 or TM02?
TM04 is the default C17450 condition in the FabDigit quote flow (neither TH04 nor TM02). 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, C17450-TH04 or C17450-TM02?
C17450-TH04. Its machinability rates fair (40/100) against poor (33/100) for C17450-TM02; for welding the order is C17450-TM02 first (good, 55/100) then C17450-TH04 (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C17450-TH04 and C17450-TM02 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.