Copper Alloy C63000-H04 vs C63000-O60
Copper Alloy · C63000 temper comparison
C63000-H04 and C63000-O60 are two conditions of the same copper alloy grade, C63000: H04 (full hard) versus O60 (soft annealed). The chemistry is identical, so every difference below comes from the condition. C63000-H04 is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 310 MPa (45 ksi) for C63000-O60, about 77% more; tensile strength follows at 830 MPa (120 ksi) vs 655 MPa (95 ksi). In exchange, C63000-O60 is the more ductile: elongation 25% versus 10% for C63000-H04, and C63000-H04 is harder (220 HB vs 150 HB). C63000-O60 runs hotter in service (300°C vs 250°C continuous). On the shop floor, C63000-O60 welds better (very good vs good).
C63000-H04Choose it when strength drives the design.
C63000-O60Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C63000-H04 vs C63000-O60: 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)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.32
Physical
Density and transition temperatures.
Same in both: Density 7.58 g/cm³0.27 lb/in³ · Melting Point (Solidus) 1,043°C1,909 °F · Liquidus Temperature 1,054°C1,929 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 419 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.2 µm/m·K9 µin/in·°F · Latent Heat of Fusion 210 J/g90.3 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
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.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 35 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 3.9 kg CO₂/kg · Embodied Water 250 L/kg30 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.
C63000-H04 vs C63000-O60 — frequently asked
Is C63000-H04 stronger than C63000-O60?
Yes. C63000-H04 has a typical yield strength of 550 MPa (79.8 ksi) against 310 MPa (45 ksi) for C63000-O60 — about 77% more. Tensile strength is 830 MPa (120 ksi) vs 655 MPa (95 ksi).
Which condition does FabDigit quote by default, H04 or O60?
HR50 is the default C63000 condition in the FabDigit quote flow (neither H04 nor O60). 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 welds better, C63000-H04 or C63000-O60?
C63000-O60. Its weldability rates very good (70/100) against good (60/100) for C63000-H04.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C63000-H04 and C63000-O60 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.