Copper Alloy C67600-H04 vs C67600-M30
Copper Alloy · C67600 temper comparison
C67600-H04 and C67600-M30 are two conditions of the same copper alloy grade, C67600: H04 (full hard) versus M30 (as hot extruded). The chemistry is identical, so every difference below comes from the condition. C67600-H04 is the stronger of the two: yield strength 415 MPa (60.2 ksi) against 200 MPa (29 ksi) for C67600-M30, about 108% more; tensile strength follows at 620 MPa (89.9 ksi) vs 470 MPa (68.2 ksi). In exchange, C67600-M30 is the more ductile: elongation 30% versus 14% for C67600-H04, and C67600-H04 is harder (175 HB vs 110 HB). C67600-M30 runs hotter in service (200°C vs 150°C continuous).
C67600-H04Choose it when strength drives the design.
C67600-M30Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C67600-H04 vs C67600-M30: 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 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.36 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 100 W/m·K57.8 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.2 µm/m·K11.8 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
Electrical Resistivity
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 25 / 100 · Castability 65 / 100 · Brazeability / Solderability 60 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 3.7 kg CO₂/kg · Embodied Water 320 L/kg38.3 gal/lb · Typical Recycled Content 55%
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.
C67600-H04 vs C67600-M30 — frequently asked
Is C67600-H04 stronger than C67600-M30?
Yes. C67600-H04 has a typical yield strength of 415 MPa (60.2 ksi) against 200 MPa (29 ksi) for C67600-M30 — about 108% more. Tensile strength is 620 MPa (89.9 ksi) vs 470 MPa (68.2 ksi).
Which condition does FabDigit quote by default, H04 or M30?
H02 is the default C67600 condition in the FabDigit quote flow (neither H04 nor M30). 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, C67600-H04 or C67600-M30?
C67600-H04, by a small margin. Both rate good for machinability — 62/100 against 55/100 for C67600-M30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C67600-H04 and C67600-M30 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.