Copper Alloy C26800-H01 vs C26800-H03
Copper Alloy · C26800 temper comparison
C26800-H01 and C26800-H03 are two conditions of the same copper alloy grade, C26800: H01 (quarter hard) versus H03 (three-quarter hard). The chemistry is identical, so every difference below comes from the condition. C26800-H03 is the stronger of the two: yield strength 400 MPa (58 ksi) against 276 MPa (40 ksi) for C26800-H01, about 45% more; tensile strength follows at 476 MPa (69 ksi) vs 379 MPa (55 ksi). In exchange, C26800-H01 is the more ductile: elongation 43% versus 15% for C26800-H03, and C26800-H03 is harder (130 HB vs 90 HB). C26800-H01 runs hotter in service (200°C vs 180°C continuous).
C26800-H01Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C26800-H03Choose it when strength drives the design.
C26800-H01 vs C26800-H03: 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 105 GPa15.2 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 111 GPa16.1 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.47 g/cm³0.31 lb/in³ · Melting Point (Solidus) 909°C1,668 °F · Liquidus Temperature 932°C1,710 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
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) 20 µm/m·K11.1 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 6.4×10⁻⁸ Ω·m2.52 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.27 V · Corrosion Resistance 58 / 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 45 / 100 · Castability 40 / 100 · Brazeability / Solderability 85 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 60%
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.
C26800-H01 vs C26800-H03 — frequently asked
Is C26800-H03 stronger than C26800-H01?
Yes. C26800-H03 has a typical yield strength of 400 MPa (58 ksi) against 276 MPa (40 ksi) for C26800-H01 — about 45% more. Tensile strength is 476 MPa (69 ksi) vs 379 MPa (55 ksi).
Which condition does FabDigit quote by default, H01 or H03?
OS050 is the default C26800 condition in the FabDigit quote flow (neither H01 nor H03). 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 is easier to machine, C26800-H01 or C26800-H03?
C26800-H03, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for C26800-H01.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C26800-H01 and C26800-H03 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.