Copper Alloy C61000-H04 vs C61000-H06
Copper Alloy · C61000 temper comparison
C61000-H04 and C61000-H06 are two conditions of the same copper alloy grade, C61000: H04 (full hard) versus H06 (extra hard). The chemistry is identical, so every difference below comes from the condition. C61000-H06 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 320 MPa (46.4 ksi) for C61000-H04, about 19% more; tensile strength follows at 620 MPa (89.9 ksi) vs 585 MPa (84.8 ksi). In exchange, C61000-H04 is the more ductile: elongation 25% versus 15% for C61000-H06, and C61000-H06 is harder (175 HB vs 160 HB). C61000-H04 runs hotter in service (250°C vs 200°C continuous).
C61000-H04Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C61000-H06Choose it when strength drives the design.
C61000-H04 vs C61000-H06: 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
Compressive Strength
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 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 118 GPa17.1 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 7.58 g/cm³0.27 lb/in³ · Melting Point (Solidus) 1,046°C1,915 °F · Liquidus Temperature 1,054°C1,929 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 62.8 W/m·K36.3 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.2 µm/m·K9 µin/in·°F · Latent Heat of Fusion 220 J/g94.6 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 15 % IACS
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
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Castability 45 / 100 · Brazeability / Solderability 35 / 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 320 L/kg38.3 gal/lb · Typical Recycled Content 35%
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.
C61000-H04 vs C61000-H06 — frequently asked
Is C61000-H06 stronger than C61000-H04?
Yes. C61000-H06 has a typical yield strength of 380 MPa (55.1 ksi) against 320 MPa (46.4 ksi) for C61000-H04 — about 19% more. Tensile strength is 620 MPa (89.9 ksi) vs 585 MPa (84.8 ksi).
Which condition does FabDigit quote by default, H04 or H06?
H04 is the default C61000 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 welds better, C61000-H04 or C61000-H06?
C61000-H04. Its weldability rates very good (75/100) against very good (70/100) for C61000-H06.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C61000-H04 and C61000-H06 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.