Copper Alloy C51000-H02 vs C51000-H04
Copper Alloy · C51000 temper comparison
C51000-H02 and C51000-H04 are two conditions of the same copper alloy grade, C51000: H02 (half hard) versus H04 (full hard). The chemistry is identical, so every difference below comes from the condition. C51000-H04 is the stronger of the two: yield strength 515 MPa (74.7 ksi) against 415 MPa (60.2 ksi) for C51000-H02, about 24% more; tensile strength follows at 560 MPa (81.2 ksi) vs 480 MPa (69.6 ksi). In exchange, C51000-H02 is the more ductile: elongation 22% versus 12% for C51000-H04, and C51000-H04 is harder (180 HV vs 150 HV). C51000-H02 runs hotter in service (175°C vs 150°C continuous).
C51000-H02Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C51000-H04Choose it when strength drives the design.
C51000-H02 vs C51000-H04: 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, Vickers
Same in both: Elastic (Young's) Modulus 110 GPa16 Msi · Shear Modulus 41 GPa5.9 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.34 · Hardness, Brinell 80 HB
Physical
Density and transition temperatures.
Same in both: Density 8.86 g/cm³0.32 lb/in³ · Melting Point (Solidus) 954°C1,749 °F · Liquidus Temperature 1,049°C1,920 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 69 W/m·K39.9 BTU/hr·ft·°F · Specific Heat Capacity 380 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.8 µm/m·K9.9 µin/in·°F · Latent Heat of Fusion 200 J/g86 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 15 % IACS · Electrical Resistivity 1.15×10⁻⁷ Ω·m4.53 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V · Corrosion Resistance 68 / 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 %) 20% · Weldability 45 / 100 · Castability 30 / 100 · Brazeability / Solderability 90 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 68 MJ/kg29,235 BTU/lb · Embodied Carbon (primary production) 4.3 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.
C51000-H02 vs C51000-H04 — frequently asked
Is C51000-H04 stronger than C51000-H02?
Yes. C51000-H04 has a typical yield strength of 515 MPa (74.7 ksi) against 415 MPa (60.2 ksi) for C51000-H02 — about 24% more. Tensile strength is 560 MPa (81.2 ksi) vs 480 MPa (69.6 ksi).
Which condition does FabDigit quote by default, H02 or H04?
O is the default C51000 condition in the FabDigit quote flow (neither H02 nor H04). 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 C51000-H02 over C51000-H04?
Pick C51000-H02 when the part is bent, formed or impact-loaded, or when the part sees heat. Pick C51000-H04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C51000-H02 and C51000-H04 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.