Copper Alloy C10100-H03 vs C10100-O
Copper Alloy · C10100 temper comparison
C10100-H03 and C10100-O are two conditions of the same copper alloy grade, C10100: H03 (three-quarter hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. C10100-H03 is the stronger of the two: yield strength 275 MPa (39.9 ksi) against 69 MPa (10 ksi) for C10100-O, about 4.0 times as much; tensile strength follows at 315 MPa (45.7 ksi) vs 235 MPa (34.1 ksi). In exchange, C10100-O is the more ductile: elongation 45% versus 10% for C10100-H03, and C10100-H03 is harder (87 HB vs 45 HB). C10100-O runs hotter in service (200°C vs 150°C continuous). On the shop floor, C10100-H03 machines more easily (30 vs 18 out of 100) and C10100-O welds better (very good vs good).
C10100-H03Choose it when strength drives the design, or when the part is machined in volume.
C10100-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C10100-H03 vs C10100-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)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · 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) 1,083°C1,981 °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) 17.7 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -253°C-423 °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) -0.24 V · Corrosion Resistance 58 / 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 95 / 100 · Polishability 85 / 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 250 L/kg30 gal/lb · Typical Recycled Content 5%
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.
C10100-H03 vs C10100-O — frequently asked
Is C10100-H03 stronger than C10100-O?
Yes. C10100-H03 has a typical yield strength of 275 MPa (39.9 ksi) against 69 MPa (10 ksi) for C10100-O — about 4.0 times as much. Tensile strength is 315 MPa (45.7 ksi) vs 235 MPa (34.1 ksi).
Which condition does FabDigit quote by default, H03 or O?
O is the default C10100 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.
Which is easier to machine, C10100-H03 or C10100-O?
C10100-H03, by a small margin. Both rate poor for machinability — 30/100 against 18/100 for C10100-O; for welding the order is C10100-O first (very good, 70/100) then C10100-H03 (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C10100-H03 and C10100-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.