Copper Alloy C12000-H03 vs C12000-H10
Copper Alloy · C12000 temper comparison
C12000-H03 and C12000-H10 are two conditions of the same copper alloy grade, C12000: H03 (three-quarter hard) versus H10 (extra spring hard). The chemistry is identical, so every difference below comes from the condition. C12000-H10 is the stronger of the two: yield strength 360 MPa (52.2 ksi) against 275 MPa (39.9 ksi) for C12000-H03, about 31% more; tensile strength follows at 380 MPa (55.1 ksi) vs 310 MPa (45 ksi). In exchange, C12000-H03 is the more ductile: elongation 10% versus 3% for C12000-H10, and C12000-H10 is harder (110 HB vs 90 HB). C12000-H03 runs hotter in service (150°C vs 120°C continuous).
C12000-H03Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C12000-H10Choose it when strength drives the design.
C12000-H03 vs C12000-H10: 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.
Elastic (Young's) 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, Vickers
Same in both: Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.94 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,065°C1,949 °F · Liquidus Temperature 1,083°C1,981 °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 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.6 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -250°C-418 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.32 V · Corrosion Resistance 62 / 100
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 98 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 300 L/kg35.9 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.
C12000-H03 vs C12000-H10 — frequently asked
Is C12000-H10 stronger than C12000-H03?
Yes. C12000-H10 has a typical yield strength of 360 MPa (52.2 ksi) against 275 MPa (39.9 ksi) for C12000-H03 — about 31% more. Tensile strength is 380 MPa (55.1 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, H03 or H10?
O60 is the default C12000 condition in the FabDigit quote flow (neither H03 nor H10). 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, C12000-H03 or C12000-H10?
C12000-H03. Its weldability rates good (68/100) against good (60/100) for C12000-H10.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C12000-H03 and C12000-H10 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.