Copper Alloy C46400-H04 vs C46400-O60
Copper Alloy · C46400 temper comparison
C46400-H04 and C46400-O60 are two conditions of the same copper alloy grade, C46400: H04 (full hard) versus O60 (soft annealed). The chemistry is identical, so every difference below comes from the condition. C46400-H04 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 150 MPa (21.8 ksi) for C46400-O60, about 153% more; tensile strength follows at 550 MPa (79.8 ksi) vs 370 MPa (53.7 ksi). In exchange, C46400-O60 is the more ductile: elongation 50% versus 17% for C46400-H04, and C46400-H04 is harder (150 HB vs 78 HB). C46400-O60 runs hotter in service (200°C vs 150°C continuous). On the shop floor, C46400-O60 machines more easily (50 vs 38 out of 100).
C46400-H04Choose it when strength drives the design.
C46400-O60Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C46400-H04 vs C46400-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.
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
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 100 GPa14.5 Msi · Shear Modulus 37 GPa5.4 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.41 g/cm³0.3 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.
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 116 W/m·K67 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.2 µm/m·K11.8 µin/in·°F · 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) -0.3 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Same in both: Castability 45 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 300 L/kg35.9 gal/lb
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.
C46400-H04 vs C46400-O60 — frequently asked
Is C46400-H04 stronger than C46400-O60?
Yes. C46400-H04 has a typical yield strength of 380 MPa (55.1 ksi) against 150 MPa (21.8 ksi) for C46400-O60 — about 153% more. Tensile strength is 550 MPa (79.8 ksi) vs 370 MPa (53.7 ksi).
Which condition does FabDigit quote by default, H04 or O60?
O is the default C46400 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 is easier to machine, C46400-H04 or C46400-O60?
C46400-O60, by a small margin. Both rate fair for machinability — 50/100 against 38/100 for C46400-H04; for welding the order is C46400-O60 first (fair, 45/100) then C46400-H04 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C46400-H04 and C46400-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.