Copper Alloy C62300-H04 vs C62300-M20
Copper Alloy · C62300 temper comparison
C62300-H04 and C62300-M20 are two conditions of the same copper alloy grade, C62300: H04 (full hard) versus M20 (as hot rolled). The chemistry is identical, so every difference below comes from the condition. C62300-H04 is the stronger of the two: yield strength 435 MPa (63.1 ksi) against 275 MPa (39.9 ksi) for C62300-M20, about 58% more; tensile strength follows at 655 MPa (95 ksi) vs 585 MPa (84.8 ksi). In exchange, C62300-M20 is the more ductile: elongation 22% versus 12% for C62300-H04, and C62300-H04 is harder (187 HB vs 155 HB). C62300-M20 runs hotter in service (300°C vs 250°C continuous).
C62300-H04Choose it when strength drives the design.
C62300-M20Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C62300-H04 vs C62300-M20: 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 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 118 GPa17.1 Msi · Poisson's Ratio 0.32 · Reduction in Area 30% · Charpy V-Notch Impact (RT) 35 J25.8 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 7.65 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,040°C1,904 °F · Liquidus Temperature 1,046°C1,915 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 39.8 W/m·K23 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.
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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.31 V · Corrosion Resistance 72 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 50% · Weldability 70 / 100 · Castability 60 / 100 · Brazeability / Solderability 45 / 100 · Polishability 75 / 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 260 L/kg31.2 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.
C62300-H04 vs C62300-M20 — frequently asked
Is C62300-H04 stronger than C62300-M20?
Yes. C62300-H04 has a typical yield strength of 435 MPa (63.1 ksi) against 275 MPa (39.9 ksi) for C62300-M20 — about 58% more. Tensile strength is 655 MPa (95 ksi) vs 585 MPa (84.8 ksi).
Which condition does FabDigit quote by default, H04 or M20?
M30 is the default C62300 condition in the FabDigit quote flow (neither H04 nor M20). 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 C62300-H04 over C62300-M20?
Pick C62300-H04 when strength drives the design. Pick C62300-M20 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 C62300-H04 and C62300-M20 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.