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Copper Alloy C11000 vs C82000

Copper Alloy · grade comparison

Copper Alloy C11000 and C82000 are both copper alloy grades. C82000 is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 69 MPa (10 ksi) for C11000, about 7.2 times as much; tensile strength follows at 655 MPa (95 ksi) vs 221 MPa (32.1 ksi). In exchange, C11000 is the more ductile: elongation 45% versus 5% for C82000, and C82000 is harder (210 HB vs 45 HB). C82000 is lighter (8.61 g/cm³ vs 8.94 g/cm³ for C11000) and C82000 is stiffer (138 GPa vs 117 GPa).

C11000Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

C82000Choose it when strength drives the design, or when weight is the constraint.

C11000 vs C82000: properties

C11000C82000

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

117 GPa17 Msi
138 GPa20 Msi

Shear Modulus

44 GPa6.4 Msi
53 GPa7.7 Msi

Bulk Modulus

140 GPa20.3 Msi
115 GPa16.7 Msi

Poisson's Ratio

0.34
0.3

Tensile Strength (Ultimate)

221 MPa32.1 ksi
655 MPa95 ksi

Yield Strength (0.2% offset)

69 MPa10 ksi
500 MPa72.5 ksi

Elongation at Break

45%
5%

Reduction in Area

75%
—

Shear Strength

152 MPa22 ksi
440 MPa63.8 ksi

Fatigue Strength (Endurance Limit)

76 MPa11 ksi
185 MPa26.8 ksi

Hardness, Brinell

45 HB
210 HB

Hardness, Vickers

50 HV
—

Compressive Strength

—
520 MPa75.4 ksi

Charpy V-Notch Impact (RT)

—
11 J8.1 ft·lbf

Hardness, Rockwell B

—
96 HRB

Hardness, Rockwell C

—
22 HRC

Physical

Density and transition temperatures.

Density

8.94 g/cm³0.32 lb/in³
8.61 g/cm³0.31 lb/in³

Melting Point (Solidus)

1,065°C1,949 °F
1,038°C1,900 °F

Liquidus Temperature

1,083°C1,981 °F
1,068°C1,954 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

391 W/m·K226 BTU/hr·ft·°F
190 W/m·K110 BTU/hr·ft·°F

Specific Heat Capacity

385 J/kg·K0.09 BTU/lb·°F
419 J/kg·K0.1 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

17 µm/m·K9.4 µin/in·°F
17.8 µm/m·K9.9 µin/in·°F

Max Service Temperature (continuous)

250°C482 °F
230°C446 °F

Same in both: Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

101 % IACS
48 % IACS

Electrical Resistivity

1.71×10⁻⁸ Ω·m0.673 µΩ·in
3.6×10⁻⁸ Ω·m1.42 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.32 V
-0.25 V

Corrosion Resistance

60 / 100
65 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Weldability

35 / 100
40 / 100

Formability (cold)

98 / 100
15 / 100

Castability

40 / 100
75 / 100

Brazeability / Solderability

92 / 100
60 / 100

Polishability

85 / 100
80 / 100

Same in both: Machinability 25 / 100 · Machinability Rating (AISI 1212 = 100 %) 20%

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

53 MJ/kg22,786 BTU/lb
95 MJ/kg40,843 BTU/lb

Embodied Carbon (primary production)

3.6 kg CO₂/kg
6.5 kg CO₂/kg

Embodied Water

260 L/kg31.2 gal/lb
350 L/kg41.9 gal/lb

Typical Recycled Content

35%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

25 kN·m/kg
76 kN·m/kg

Specific Stiffness (E / density)

13.1 MN·m/kg
16 MN·m/kg

Modulus of Resilience

20 kJ/m³
906 kJ/m³

Thermal Diffusivity

113.6 mm²/s
52.7 mm²/s

Thermal Shock Resistance Index

43
51

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.

501002005001,0007.588.599.5Density (g/cm³)Yield strength (MPa) — log scaleC11000C82000

Manufacturing and finishing

CapabilityC11000C82000
CNC machiningYes—
Sheet metalYes—
3D printingYes—
Default conditionO—
Relative cost$$$$ High$$$$ High
Min. machined wall0.8 mm—
Best machined surfaceRa 1.6 µm—
Chrome PlatingYes—
ElectropolishingYes—
Nickel PlatingYes—
PaintingYes—
Tin PlatingYes—

They share 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.

C11000 vs C82000 — frequently asked

Is C82000 stronger than C11000?

Yes. C82000 has a typical yield strength of 500 MPa (72.5 ksi) against 69 MPa (10 ksi) for C11000 — about 7.2 times as much. Tensile strength is 655 MPa (95 ksi) vs 221 MPa (32.1 ksi).

Which is cheaper, C11000 or C82000?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, C11000 or C82000?

C82000. Its weldability rates fair (40/100) against fair (35/100) for C11000.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C11000 and C82000 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.