Copper Alloy C46400-H02 vs C46400-O
Copper Alloy · C46400 temper comparison
C46400-H02 and C46400-O are two conditions of the same copper alloy grade, C46400: H02 (half hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. C46400-H02 is the stronger of the two: yield strength 235 MPa (34.1 ksi) against 172 MPa (24.9 ksi) for C46400-O, about 37% more; tensile strength follows at 450 MPa (65.3 ksi) vs 380 MPa (55.1 ksi). In exchange, C46400-O is the more ductile: elongation 48% versus 33% for C46400-H02, and C46400-H02 is harder (120 HB vs 95 HB). C46400-O runs hotter in service (200°C vs 175°C continuous).
C46400-H02Choose it when strength drives the design.
C46400-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C46400-H02 vs C46400-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
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 · Bulk Modulus 111 GPa16.1 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.
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 · Latent Heat of Fusion 168 J/g72.2 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 26 % IACS
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.
Formability (cold)
Same in both: Machinability 35 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 45 / 100 · Castability 45 / 100 · Brazeability / Solderability 90 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 60 MJ/kg25,795 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 50%
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-H02 vs C46400-O — frequently asked
Is C46400-H02 stronger than C46400-O?
Yes. C46400-H02 has a typical yield strength of 235 MPa (34.1 ksi) against 172 MPa (24.9 ksi) for C46400-O — about 37% more. Tensile strength is 450 MPa (65.3 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, H02 or O?
O is the default C46400 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 C46400-H02 over C46400-O?
Pick C46400-H02 when strength drives the design. Pick C46400-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 C46400-H02 and C46400-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.