Copper Alloy C53400-H08 vs C53400-O60
Copper Alloy · C53400 temper comparison
C53400-H08 and C53400-O60 are two conditions of the same copper alloy grade, C53400: H08 (spring hard) versus O60 (soft annealed). The chemistry is identical, so every difference below comes from the condition. C53400-H08 is the stronger of the two: yield strength 545 MPa (79 ksi) against 145 MPa (21 ksi) for C53400-O60, about 3.8 times as much; tensile strength follows at 585 MPa (84.8 ksi) vs 320 MPa (46.4 ksi). In exchange, C53400-O60 is the more ductile: elongation 48% versus 3.5% for C53400-H08, and C53400-H08 is harder (180 HB vs 60 HB). C53400-O60 runs hotter in service (250°C vs 150°C continuous) and C53400-O60 conducts electricity better (20 % IACS vs 18 % IACS).
C53400-H08Choose it when strength drives the design.
C53400-O60Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C53400-H08 vs C53400-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
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 110 GPa16 Msi · Shear Modulus 41 GPa5.9 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 955°C1,751 °F · Liquidus Temperature 1,050°C1,922 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 84 W/m·K48.5 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.8 µm/m·K9.9 µin/in·°F · Latent Heat of Fusion 200 J/g86 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) -0.31 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: Castability 35 / 100 · Brazeability / Solderability 70 / 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) 4 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.
C53400-H08 vs C53400-O60 — frequently asked
Is C53400-H08 stronger than C53400-O60?
Yes. C53400-H08 has a typical yield strength of 545 MPa (79 ksi) against 145 MPa (21 ksi) for C53400-O60 — about 3.8 times as much. Tensile strength is 585 MPa (84.8 ksi) vs 320 MPa (46.4 ksi).
Which condition does FabDigit quote by default, H08 or O60?
H04 is the default C53400 condition in the FabDigit quote flow (neither H08 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, C53400-H08 or C53400-O60?
C53400-H08, by a small margin. Both rate very good for machinability — 75/100 against 70/100 for C53400-O60.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C53400-H08 and C53400-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.