Copper Alloy C67300-H02 vs C67300-H04
Copper Alloy · C67300 temper comparison
C67300-H02 and C67300-H04 are two conditions of the same copper alloy grade, C67300: H02 (half hard) versus H04 (full hard). The chemistry is identical, so every difference below comes from the condition. C67300-H04 is the stronger of the two: yield strength 480 MPa (69.6 ksi) against 415 MPa (60.2 ksi) for C67300-H02, about 16% more; tensile strength follows at 700 MPa (102 ksi) vs 640 MPa (92.8 ksi). In exchange, C67300-H02 is the more ductile: elongation 18% versus 12% for C67300-H04, and C67300-H04 is harder (190 HB vs 170 HB).
C67300-H02Choose it when the part is bent, formed or impact-loaded.
C67300-H04Choose it when strength drives the design.
C67300-H02 vs C67300-H04: 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, Rockwell B
Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.19 g/cm³0.3 lb/in³ · Melting Point (Solidus) 855°C1,571 °F · Liquidus Temperature 880°C1,616 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 60 W/m·K34.7 BTU/hr·ft·°F · Specific Heat Capacity 375 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.3 µm/m·K11.3 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 12 % IACS · Electrical Resistivity 1.44×10⁻⁷ Ω·m5.67 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.
Formability (cold)
Same in both: Machinability 78 / 100 · Machinability Rating (AISI 1212 = 100 %) 250% · Weldability 18 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 52 MJ/kg22,356 BTU/lb · Embodied Carbon (primary production) 3.3 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 45%
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.
C67300-H02 vs C67300-H04 — frequently asked
Is C67300-H04 stronger than C67300-H02?
Yes. C67300-H04 has a typical yield strength of 480 MPa (69.6 ksi) against 415 MPa (60.2 ksi) for C67300-H02 — about 16% more. Tensile strength is 700 MPa (102 ksi) vs 640 MPa (92.8 ksi).
Which condition does FabDigit quote by default, H02 or H04?
M30 is the default C67300 condition in the FabDigit quote flow (neither H02 nor H04). 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.
When should I choose C67300-H02 over C67300-H04?
Pick C67300-H02 when the part is bent, formed or impact-loaded. Pick C67300-H04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C67300-H02 and C67300-H04 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.