Copper Alloy C71500-H04 vs C71500-H80
Copper Alloy · C71500 temper comparison
C71500-H04 and C71500-H80 are two conditions of the same copper alloy grade, C71500: H04 (full hard) versus H80 (hard drawn). The chemistry is identical, so every difference below comes from the condition. C71500-H80 is the stronger of the two: yield strength 545 MPa (79 ksi) against 480 MPa (69.6 ksi) for C71500-H04, about 14% more; tensile strength follows at 585 MPa (84.8 ksi) vs 515 MPa (74.7 ksi). In exchange, C71500-H04 is the more ductile: elongation 8% versus 4% for C71500-H80, and C71500-H80 is harder (175 HB vs 150 HB).
C71500-H04Choose it when the part is bent, formed or impact-loaded.
C71500-H80Choose it when strength drives the design.
C71500-H04 vs C71500-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
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 152 GPa22 Msi · Shear Modulus 57 GPa8.3 Msi · Bulk Modulus 158 GPa22.9 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.94 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,171°C2,140 °F · Liquidus Temperature 1,238°C2,260 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 29 W/m·K16.8 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.2 µm/m·K9 µin/in·°F · Latent Heat of Fusion 230 J/g98.9 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 4.5 % IACS · Electrical Resistivity 3.8×10⁻⁷ Ω·m15 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Same in both: Machinability 45 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Castability 45 / 100 · Brazeability / Solderability 80 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 110 MJ/kg47,292 BTU/lb · Embodied Carbon (primary production) 7 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.
C71500-H04 vs C71500-H80 — frequently asked
Is C71500-H80 stronger than C71500-H04?
Yes. C71500-H80 has a typical yield strength of 545 MPa (79 ksi) against 480 MPa (69.6 ksi) for C71500-H04 — about 14% more. Tensile strength is 585 MPa (84.8 ksi) vs 515 MPa (74.7 ksi).
Which condition does FabDigit quote by default, H04 or H80?
O61 is the default C71500 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 C71500-H04 over C71500-H80?
Pick C71500-H04 when the part is bent, formed or impact-loaded. Pick C71500-H80 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C71500-H04 and C71500-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.