Copper Alloy C22000-H03 vs C22000-M20
Copper Alloy · C22000 temper comparison
C22000-H03 and C22000-M20 are two conditions of the same copper alloy grade, C22000: H03 (three-quarter hard) versus M20 (as hot rolled). The chemistry is identical, so every difference below comes from the condition. C22000-H03 is the stronger of the two: yield strength 310 MPa (45 ksi) against 85 MPa (12.3 ksi) for C22000-M20, about 3.6 times as much; tensile strength follows at 370 MPa (53.7 ksi) vs 260 MPa (37.7 ksi). In exchange, C22000-M20 is the more ductile: elongation 45% versus 8% for C22000-H03, and C22000-H03 is harder (115 HB vs 52 HB). C22000-M20 runs hotter in service (250°C vs 190°C continuous).
C22000-H03Choose it when strength drives the design.
C22000-M20Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C22000-H03 vs C22000-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, Vickers
Same in both: Elastic (Young's) Modulus 115 GPa16.7 Msi · Shear Modulus 43 GPa6.2 Msi · Bulk Modulus 118 GPa17.1 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.8 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,020°C1,868 °F · Liquidus Temperature 1,045°C1,913 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 189 W/m·K109 BTU/hr·ft·°F · Specific Heat Capacity 376 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18.4 µm/m·K10.2 µin/in·°F · Latent Heat of Fusion 200 J/g86 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) -0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Brazeability / Solderability 92 / 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 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.
C22000-H03 vs C22000-M20 — frequently asked
Is C22000-H03 stronger than C22000-M20?
Yes. C22000-H03 has a typical yield strength of 310 MPa (45 ksi) against 85 MPa (12.3 ksi) for C22000-M20 — about 3.6 times as much. Tensile strength is 370 MPa (53.7 ksi) vs 260 MPa (37.7 ksi).
Which condition does FabDigit quote by default, H03 or M20?
O is the default C22000 condition in the FabDigit quote flow (neither H03 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.
Which welds better, C22000-H03 or C22000-M20?
C22000-M20. Its weldability rates good (55/100) against fair (50/100) for C22000-H03.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C22000-H03 and C22000-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.