Copper Alloy C26000-H02 vs C26000-H04
Copper Alloy · C26000 temper comparison
C26000-H02 and C26000-H04 are two conditions of the same copper alloy grade, C26000: H02 (half hard) versus H04 (full hard). The chemistry is identical, so every difference below comes from the condition. C26000-H04 is the stronger of the two: yield strength 441 MPa (64 ksi) against 359 MPa (52.1 ksi) for C26000-H02, about 23% more; tensile strength follows at 524 MPa (76 ksi) vs 427 MPa (61.9 ksi). In exchange, C26000-H02 is the more ductile: elongation 23% versus 8% for C26000-H04, and C26000-H04 is harder (150 HB vs 125 HB).
C26000-H02Choose it when the part is bent, formed or impact-loaded.
C26000-H04Choose it when strength drives the design.
C26000-H02 vs C26000-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)
Hardness, Brinell
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 0.35 · Hardness, Vickers 60 HV
Physical
Density and transition temperatures.
Same in both: Density 8.53 g/cm³0.31 lb/in³ · Melting Point (Solidus) 915°C1,679 °F · Liquidus Temperature 955°C1,751 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 121 W/m·K69.9 BTU/hr·ft·°F · Specific Heat Capacity 375 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 19.9 µm/m·K11.1 µin/in·°F · Latent Heat of Fusion 165 J/g70.9 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 6.2×10⁻⁸ Ω·m2.44 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V · Corrosion Resistance 50 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 30 / 100 · Weldability 40 / 100 · Castability 25 / 100 · Brazeability / Solderability 90 / 100 · Polishability 85 / 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 250 L/kg30 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.
C26000-H02 vs C26000-H04 — frequently asked
Is C26000-H04 stronger than C26000-H02?
Yes. C26000-H04 has a typical yield strength of 441 MPa (64 ksi) against 359 MPa (52.1 ksi) for C26000-H02 — about 23% more. Tensile strength is 524 MPa (76 ksi) vs 427 MPa (61.9 ksi).
Which condition does FabDigit quote by default, H02 or H04?
O is the default C26000 condition in the FabDigit quote flow (neither H02 nor H04). 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 C26000-H02 over C26000-H04?
Pick C26000-H02 when the part is bent, formed or impact-loaded. Pick C26000-H04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C26000-H02 and C26000-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.