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Copper Alloy C11000 vs C82700

Copper Alloy · grade comparison

Copper Alloy C11000 and C82700 are both copper alloy grades. C82700 is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 69 MPa (10 ksi) for C11000, about 14 times as much; tensile strength follows at 1,105 MPa (160 ksi) vs 221 MPa (32.1 ksi). In exchange, C11000 is the more ductile: elongation 45% versus 1.5% for C82700, and C82700 is harder (370 HB vs 45 HB). C82700 is lighter (8.26 g/cm³ vs 8.94 g/cm³ for C11000) and C82700 is stiffer (128 GPa vs 117 GPa). On the shop floor, C82700 machines more easily (fair vs poor).

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

C82700Choose it when strength drives the design, or when weight is the constraint.

C11000 vs C82700: properties

C11000C82700

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

117 GPa17 Msi
128 GPa18.6 Msi

Shear Modulus

44 GPa6.4 Msi
50 GPa7.3 Msi

Bulk Modulus

140 GPa20.3 Msi
110 GPa16 Msi

Poisson's Ratio

0.34
0.3

Tensile Strength (Ultimate)

221 MPa32.1 ksi
1,105 MPa160 ksi

Yield Strength (0.2% offset)

69 MPa10 ksi
1,000 MPa145 ksi

Elongation at Break

45%
1.5%

Reduction in Area

75%
—

Shear Strength

152 MPa22 ksi
690 MPa100 ksi

Fatigue Strength (Endurance Limit)

76 MPa11 ksi
240 MPa34.8 ksi

Hardness, Brinell

45 HB
370 HB

Hardness, Vickers

50 HV
390 HV

Compressive Strength

—
1,150 MPa167 ksi

Charpy V-Notch Impact (RT)

—
4 J3 ft·lbf

Hardness, Rockwell C

—
40 HRC

Physical

Density and transition temperatures.

Density

8.94 g/cm³0.32 lb/in³
8.26 g/cm³0.3 lb/in³

Melting Point (Solidus)

1,065°C1,949 °F
866°C1,591 °F

Liquidus Temperature

1,083°C1,981 °F
980°C1,796 °F

Thermal

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

Thermal Conductivity

391 W/m·K226 BTU/hr·ft·°F
105 W/m·K60.7 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
17.5 µm/m·K9.7 µin/in·°F

Latent Heat of Fusion

205 J/g88.1 BTU/lb
200 J/g86 BTU/lb

Max Service Temperature (continuous)

250°C482 °F
220°C428 °F

Same in both: Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

101 % IACS
21 % IACS

Electrical Resistivity

1.71×10⁻⁸ Ω·m0.673 µΩ·in
8.2×10⁻⁸ Ω·m3.23 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.32 V
-0.2 V

Corrosion Resistance

60 / 100
65 / 100

Manufacturability

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

Machinability

25 / 100
40 / 100

Formability (cold)

98 / 100
10 / 100

Castability

40 / 100
75 / 100

Brazeability / Solderability

92 / 100
55 / 100

Polishability

85 / 100
80 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Weldability 35 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

53 MJ/kg22,786 BTU/lb
110 MJ/kg47,292 BTU/lb

Embodied Carbon (primary production)

3.6 kg CO₂/kg
8 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
134 kN·m/kg

Specific Stiffness (E / density)

13.1 MN·m/kg
15.5 MN·m/kg

Modulus of Resilience

20 kJ/m³
3,906 kJ/m³

Thermal Diffusivity

113.6 mm²/s
30.3 mm²/s

Thermal Shock Resistance Index

43
52

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 scaleC11000C82700

Manufacturing and finishing

CapabilityC11000C82700
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 C82700 — frequently asked

Is C82700 stronger than C11000?

Yes. C82700 has a typical yield strength of 1,000 MPa (145 ksi) against 69 MPa (10 ksi) for C11000 — about 14 times as much. Tensile strength is 1,105 MPa (160 ksi) vs 221 MPa (32.1 ksi).

Which is cheaper, C11000 or C82700?

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 is easier to machine, C11000 or C82700?

C82700. Its machinability rates fair (40/100) against poor (25/100) for C11000.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C11000 and C82700 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.