Copper Alloy C49300-H01 vs C49300-O61
Copper Alloy · C49300 temper comparison
C49300-H01 and C49300-O61 are two conditions of the same copper alloy grade, C49300: H01 (quarter hard) versus O61 (annealed). The chemistry is identical, so every difference below comes from the condition. C49300-H01 is the stronger of the two: yield strength 240 MPa (34.8 ksi) against 120 MPa (17.4 ksi) for C49300-O61, about 100% more; tensile strength follows at 400 MPa (58 ksi) vs 340 MPa (49.3 ksi). In exchange, C49300-O61 is the more ductile: elongation 45% versus 25% for C49300-H01, and C49300-H01 is harder (105 HB vs 65 HB). C49300-O61 runs hotter in service (200°C vs 180°C continuous).
C49300-H01Choose it when strength drives the design.
C49300-O61Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C49300-H01 vs C49300-O61: 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)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 112 GPa16.2 Msi · Poisson's Ratio 0.34 · Charpy V-Notch Impact (RT) 30 J22.1 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 8.5 g/cm³0.31 lb/in³ · Melting Point (Solidus) 885°C1,625 °F · Liquidus Temperature 920°C1,688 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 110 W/m·K63.6 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.5 µm/m·K11.4 µin/in·°F · Latent Heat of Fusion 175 J/g75.2 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 6.6×10⁻⁸ Ω·m2.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 30 / 100 · Castability 55 / 100 · Brazeability / Solderability 88 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 45 MJ/kg19,347 BTU/lb · Embodied Carbon (primary production) 3.1 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.
C49300-H01 vs C49300-O61 — frequently asked
Is C49300-H01 stronger than C49300-O61?
Yes. C49300-H01 has a typical yield strength of 240 MPa (34.8 ksi) against 120 MPa (17.4 ksi) for C49300-O61 — about 100% more. Tensile strength is 400 MPa (58 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, H01 or O61?
H02 is the default C49300 condition in the FabDigit quote flow (neither H01 nor O61). 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, C49300-H01 or C49300-O61?
C49300-H01. Its machinability rates excellent (86/100) against very good (80/100) for C49300-O61.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C49300-H01 and C49300-O61 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.