Copper Alloy C22000-H04 vs C22000-O
Copper Alloy · C22000 temper comparison
C22000-H04 and C22000-O are two conditions of the same copper alloy grade, C22000: H04 (full hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. C22000-H04 is the stronger of the two: yield strength 350 MPa (50.8 ksi) against 83 MPa (12 ksi) for C22000-O, about 4.2 times as much; tensile strength follows at 400 MPa (58 ksi) vs 275 MPa (39.9 ksi). In exchange, C22000-O is the more ductile: elongation 45% versus 6% for C22000-H04, and C22000-H04 is harder (130 HB vs 48 HB). C22000-O runs hotter in service (200°C vs 150°C continuous).
C22000-H04Choose it when strength drives the design.
C22000-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C22000-H04 vs C22000-O: 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, Vickers
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 118 GPa17.1 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,020°C1,868 °F · Liquidus Temperature 1,045°C1,913 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 189 W/m·K109 BTU/hr·ft·°F · Specific Heat Capacity 376 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18.4 µm/m·K10.2 µin/in·°F · Latent Heat of Fusion 195 J/g83.8 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 3.92×10⁻⁸ Ω·m1.54 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V · Corrosion Resistance 65 / 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 45 / 100 · Brazeability / Solderability 95 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.9 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 40%
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.
C22000-H04 vs C22000-O — frequently asked
Is C22000-H04 stronger than C22000-O?
Yes. C22000-H04 has a typical yield strength of 350 MPa (50.8 ksi) against 83 MPa (12 ksi) for C22000-O — about 4.2 times as much. Tensile strength is 400 MPa (58 ksi) vs 275 MPa (39.9 ksi).
Which condition does FabDigit quote by default, H04 or O?
O is the default C22000 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 C22000-H04 over C22000-O?
Pick C22000-H04 when strength drives the design. Pick C22000-O 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 C22000-H04 and C22000-O 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.