Copper Alloy C43500-H04 vs C43500-H80
Copper Alloy · C43500 temper comparison
C43500-H04 and C43500-H80 are two conditions of the same copper alloy grade, C43500: H04 (full hard) versus H80 (hard drawn). The chemistry is identical, so every difference below comes from the condition. C43500-H04 is the stronger of the two: yield strength 450 MPa (65.3 ksi) against 310 MPa (45 ksi) for C43500-H80, about 45% more; tensile strength follows at 505 MPa (73.2 ksi) vs 415 MPa (60.2 ksi). In exchange, C43500-H80 is the more ductile: elongation 20% versus 5% for C43500-H04, and C43500-H04 is harder (145 HB vs 115 HB). C43500-H80 runs hotter in service (175°C vs 150°C continuous).
C43500-H04Choose it when strength drives the design.
C43500-H80Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C43500-H04 vs C43500-H80: 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 110 GPa16 Msi · Shear Modulus 41 GPa5.9 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.53 g/cm³0.31 lb/in³ · Melting Point (Solidus) 899°C1,650 °F · Liquidus Temperature 927°C1,701 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 116 W/m·K67 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.3 µm/m·K11.3 µin/in·°F · Latent Heat of Fusion 175 J/g75.2 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 28 % IACS · Electrical Resistivity 6.16×10⁻⁸ Ω·m2.43 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.26 V · Corrosion Resistance 60 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 40 / 100 · Castability 30 / 100 · Brazeability / Solderability 92 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.5 kg CO₂/kg · Embodied Water 280 L/kg33.6 gal/lb · Typical Recycled Content 45%
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.
C43500-H04 vs C43500-H80 — frequently asked
Is C43500-H04 stronger than C43500-H80?
Yes. C43500-H04 has a typical yield strength of 450 MPa (65.3 ksi) against 310 MPa (45 ksi) for C43500-H80 — about 45% more. Tensile strength is 505 MPa (73.2 ksi) vs 415 MPa (60.2 ksi).
Which condition does FabDigit quote by default, H04 or H80?
OS025 is the default C43500 condition in the FabDigit quote flow (neither H04 nor H80). 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 C43500-H04 over C43500-H80?
Pick C43500-H04 when strength drives the design. Pick C43500-H80 when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C43500-H04 and C43500-H80 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.