Copper Alloy C11000-H04 vs C11000 Stress Relieved
Copper Alloy · C11000 temper comparison
C11000-H04 and C11000 Stress Relieved are two conditions of the same copper alloy grade, C11000: H04 (full hard) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. C11000-H04 is the stronger of the two: yield strength 310 MPa (45 ksi) against 265 MPa (38.4 ksi) for C11000 Stress Relieved, about 17% more; tensile strength follows at 345 MPa (50 ksi) vs 310 MPa (45 ksi). In exchange, C11000 Stress Relieved is the more ductile: elongation 12% versus 6% for C11000-H04, and C11000-H04 is harder (100 HB vs 90 HB). C11000-H04 is stiffer (128 GPa vs 115 GPa) and C11000 Stress Relieved runs hotter in service (150°C vs 120°C continuous).
C11000-H04Choose it when strength drives the design.
C11000 Stress RelievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C11000-H04 vs C11000 Stress Relieved: 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.
C11000-H04C11000 Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34 · Shear Strength 200 MPa29 ksi
Physical
Density and transition temperatures.
Same in both: Density 8.94 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,065°C1,949 °F · Liquidus Temperature 1,083°C1,981 °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 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17 µm/m·K9.4 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 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) -0.32 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: Castability 40 / 100 · Brazeability / Solderability 92 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 35%
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.
C11000-H04 vs C11000 Stress Relieved — frequently asked
Is C11000-H04 stronger than C11000 Stress Relieved?
Yes. C11000-H04 has a typical yield strength of 310 MPa (45 ksi) against 265 MPa (38.4 ksi) for C11000 Stress Relieved — about 17% more. Tensile strength is 345 MPa (50 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, H04 or Stress Relieved?
O is the default C11000 condition in the FabDigit quote flow (neither H04 nor Stress Relieved). 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, C11000-H04 or C11000 Stress Relieved?
C11000 Stress Relieved, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for C11000-H04.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C11000-H04 and C11000 Stress Relieved 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.