Copper Alloy C34500-H02 vs C34500-H04
Copper Alloy · C34500 temper comparison
C34500-H02 and C34500-H04 are two conditions of the same copper alloy grade, C34500: H02 (half hard) versus H04 (full hard). The chemistry is identical, so every difference below comes from the condition. C34500-H04 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 310 MPa (45 ksi) for C34500-H02, about 23% more; tensile strength follows at 470 MPa (68.2 ksi) vs 415 MPa (60.2 ksi). In exchange, C34500-H02 is the more ductile: elongation 20% versus 12% for C34500-H04, and C34500-H04 is harder (145 HB vs 125 HB).
C34500-H02Choose it when the part is bent, formed or impact-loaded.
C34500-H04Choose it when strength drives the design.
C34500-H02 vs C34500-H04: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 97 GPa14.1 Msi · Shear Modulus 37 GPa5.4 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34 · Reduction in Area 45%
Physical
Density and transition temperatures.
Same in both: Density 8.47 g/cm³0.31 lb/in³ · Melting Point (Solidus) 885°C1,625 °F · Liquidus Temperature 900°C1,652 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 115 W/m·K66.4 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.5 µm/m·K11.4 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 26 % IACS · Electrical Resistivity 6.6×10⁻⁸ Ω·m2.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V · Corrosion Resistance 52 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 90 / 100 · Machinability Rating (AISI 1212 = 100 %) 90% · Weldability 15 / 100 · Brazeability / Solderability 85 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 55%
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.
C34500-H02 vs C34500-H04 — frequently asked
Is C34500-H04 stronger than C34500-H02?
Yes. C34500-H04 has a typical yield strength of 380 MPa (55.1 ksi) against 310 MPa (45 ksi) for C34500-H02 — about 23% more. Tensile strength is 470 MPa (68.2 ksi) vs 415 MPa (60.2 ksi).
Which condition does FabDigit quote by default, H02 or H04?
H02 is the default C34500 condition in the FabDigit quote flow. 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 C34500-H02 over C34500-H04?
Pick C34500-H02 when the part is bent, formed or impact-loaded. Pick C34500-H04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C34500-H02 and C34500-H04 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.