Copper Alloy C48500-H04 vs C48500-M30
Copper Alloy · C48500 temper comparison
C48500-H04 and C48500-M30 are two conditions of the same copper alloy grade, C48500: H04 (full hard) versus M30 (as hot extruded). The chemistry is identical, so every difference below comes from the condition. C48500-H04 is the stronger of the two: yield strength 390 MPa (56.6 ksi) against 175 MPa (25.4 ksi) for C48500-M30, about 123% more; tensile strength follows at 540 MPa (78.3 ksi) vs 400 MPa (58 ksi). In exchange, C48500-M30 is the more ductile: elongation 35% versus 13% for C48500-H04, and C48500-H04 is harder (150 HB vs 95 HB). C48500-M30 runs hotter in service (200°C vs 150°C continuous).
C48500-H04Choose it when strength drives the design.
C48500-M30Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C48500-H04 vs C48500-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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 100 GPa14.5 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.41 g/cm³0.3 lb/in³ · Melting Point (Solidus) 875°C1,607 °F · Liquidus Temperature 885°C1,625 °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) 21.2 µm/m·K11.8 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 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
Formability (cold)
Same in both: Weldability 20 / 100 · Castability 55 / 100 · Brazeability / Solderability 85 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 65%
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.
C48500-H04 vs C48500-M30 — frequently asked
Is C48500-H04 stronger than C48500-M30?
Yes. C48500-H04 has a typical yield strength of 390 MPa (56.6 ksi) against 175 MPa (25.4 ksi) for C48500-M30 — about 123% more. Tensile strength is 540 MPa (78.3 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, H04 or M30?
H02 is the default C48500 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.
When should I choose C48500-H04 over C48500-M30?
Pick C48500-H04 when strength drives the design. Pick C48500-M30 when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C48500-H04 and C48500-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.