Copper Alloy C17460-TM04 vs C17460-TM08
Copper Alloy · C17460 temper comparison
C17460-TM04 and C17460-TM08 are two conditions of the same copper alloy grade, C17460: TM04 (mill hardened, full hard) versus TM08 (mill hardened, spring hard). The chemistry is identical, so every difference below comes from the condition. C17460-TM08 is the stronger of the two: yield strength 780 MPa (113 ksi) against 620 MPa (89.9 ksi) for C17460-TM04, about 26% more; tensile strength follows at 860 MPa (125 ksi) vs 730 MPa (106 ksi). In exchange, C17460-TM04 is the more ductile: elongation 11% versus 7% for C17460-TM08, and C17460-TM08 is harder (240 HB vs 205 HB).
C17460-TM04Choose it when the part is bent, formed or impact-loaded.
C17460-TM08Choose it when strength drives the design.
C17460-TM04 vs C17460-TM08: 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, Rockwell C
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 8.83 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,000°C1,832 °F · Liquidus Temperature 1,070°C1,958 °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) 17.5 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) -0.22 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 45 / 100 · Brazeability / Solderability 80 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 95 MJ/kg40,843 BTU/lb · Embodied Carbon (primary production) 6.5 kg CO₂/kg · Embodied Water 300 L/kg35.9 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.
C17460-TM04 vs C17460-TM08 — frequently asked
Is C17460-TM08 stronger than C17460-TM04?
Yes. C17460-TM08 has a typical yield strength of 780 MPa (113 ksi) against 620 MPa (89.9 ksi) for C17460-TM04 — about 26% more. Tensile strength is 860 MPa (125 ksi) vs 730 MPa (106 ksi).
Which condition does FabDigit quote by default, TM04 or TM08?
TF00 is the default C17460 condition in the FabDigit quote flow (neither TM04 nor TM08). 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, C17460-TM04 or C17460-TM08?
C17460-TM04. Its weldability rates fair (45/100) against fair (40/100) for C17460-TM08.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C17460-TM04 and C17460-TM08 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.