Copper Alloy C69430-H04 vs C69430-M30
Copper Alloy · C69430 temper comparison
C69430-H04 and C69430-M30 are two conditions of the same copper alloy grade, C69430: H04 (full hard) versus M30 (as hot extruded). The chemistry is identical, so every difference below comes from the condition. C69430-H04 is the stronger of the two: yield strength 415 MPa (60.2 ksi) against 240 MPa (34.8 ksi) for C69430-M30, about 73% more; tensile strength follows at 690 MPa (100 ksi) vs 515 MPa (74.7 ksi). In exchange, C69430-M30 is the more ductile: elongation 30% versus 18% for C69430-H04, and C69430-H04 is harder (190 HB vs 140 HB). C69430-M30 runs hotter in service (200°C vs 160°C continuous).
C69430-H04Choose it when strength drives the design.
C69430-M30Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C69430-H04 vs C69430-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
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 107 GPa15.5 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.3 g/cm³0.3 lb/in³ · Melting Point (Solidus) 820°C1,508 °F · Liquidus Temperature 916°C1,681 °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 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.2 µm/m·K11.2 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Min Service Temperature -196°C-321 °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) -0.26 V
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 80 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 3.8 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.
C69430-H04 vs C69430-M30 — frequently asked
Is C69430-H04 stronger than C69430-M30?
Yes. C69430-H04 has a typical yield strength of 415 MPa (60.2 ksi) against 240 MPa (34.8 ksi) for C69430-M30 — about 73% more. Tensile strength is 690 MPa (100 ksi) vs 515 MPa (74.7 ksi).
Which condition does FabDigit quote by default, H04 or M30?
M30 is the default C69430 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, C69430-H04 or C69430-M30?
C69430-H04, by a small margin. Both rate fair for machinability — 48/100 against 40/100 for C69430-M30; for welding the order is C69430-M30 first (very good, 75/100) then C69430-H04 (very good, 70/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C69430-H04 and C69430-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.