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Copper Alloy C26000 vs C36000

Copper Alloy · grade comparison

Copper Alloy C26000 and C36000 are both copper alloy grades. C36000 is the stronger of the two: yield strength 310 MPa (45 ksi) against 105 MPa (15.2 ksi) for C26000, about 195% more; tensile strength follows at 385 MPa (55.8 ksi) vs 325 MPa (47.1 ksi). In exchange, C26000 is the more ductile: elongation 62% versus 22% for C36000, and C36000 is harder (115 HB vs 55 HB). C26000 is stiffer (110 GPa vs 97 GPa). On the shop floor, C36000 machines more easily (excellent vs poor), C26000 welds better (fair vs poor), and C36000 sits in a lower cost tier (premium, $$$) than C26000 (high, $$$$).

C26000Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

C36000Choose it when strength drives the design, or when the part is machined in volume.

C26000 vs C36000: properties

C26000C36000

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

110 GPa16 Msi
97 GPa14.1 Msi

Shear Modulus

41 GPa5.9 Msi
37 GPa5.4 Msi

Bulk Modulus

115 GPa16.7 Msi
105 GPa15.2 Msi

Poisson's Ratio

0.35
0.31

Tensile Strength (Ultimate)

325 MPa47.1 ksi
385 MPa55.8 ksi

Yield Strength (0.2% offset)

105 MPa15.2 ksi
310 MPa45 ksi

Elongation at Break

62%
22%

Shear Strength

234 MPa33.9 ksi
250 MPa36.3 ksi

Fatigue Strength (Endurance Limit)

97 MPa14.1 ksi
140 MPa20.3 ksi

Hardness, Brinell

55 HB
115 HB

Hardness, Vickers

60 HV
120 HV

Reduction in Area

—
42%

Charpy V-Notch Impact (RT)

—
12 J8.9 ft·lbf

Hardness, Rockwell B

—
78 HRB

Physical

Density and transition temperatures.

Density

8.53 g/cm³0.31 lb/in³
8.5 g/cm³0.31 lb/in³

Melting Point (Solidus)

915°C1,679 °F
885°C1,625 °F

Liquidus Temperature

955°C1,751 °F
900°C1,652 °F

Thermal

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

Thermal Conductivity

121 W/m·K69.9 BTU/hr·ft·°F
115 W/m·K66.4 BTU/hr·ft·°F

Specific Heat Capacity

375 J/kg·K0.09 BTU/lb·°F
380 J/kg·K0.09 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

19.9 µm/m·K11.1 µin/in·°F
20.5 µm/m·K11.4 µin/in·°F

Latent Heat of Fusion

165 J/g70.9 BTU/lb
160 J/g68.8 BTU/lb

Same in both: Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

28 % IACS
26 % IACS

Electrical Resistivity

6.2×10⁻⁸ Ω·m2.44 µΩ·in
6.6×10⁻⁸ Ω·m2.6 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.28 V
-0.25 V

Corrosion Resistance

50 / 100
53 / 100

Manufacturability

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

Machinability

30 / 100
100 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
300%

Weldability

40 / 100
20 / 100

Formability (cold)

98 / 100
25 / 100

Castability

25 / 100
55 / 100

Brazeability / Solderability

90 / 100
85 / 100

Polishability

85 / 100
80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

55 MJ/kg23,646 BTU/lb
58 MJ/kg24,936 BTU/lb

Embodied Carbon (primary production)

3.5 kg CO₂/kg
3.8 kg CO₂/kg

Embodied Water

250 L/kg30 gal/lb
220 L/kg26.4 gal/lb

Typical Recycled Content

45%
80%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

38 kN·m/kg
45 kN·m/kg

Specific Stiffness (E / density)

12.9 MN·m/kg
11.4 MN·m/kg

Modulus of Resilience

50 kJ/m³
495 kJ/m³

Thermal Diffusivity

37.8 mm²/s
35.6 mm²/s

Thermal Shock Resistance Index

18
22

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 scaleC26000C36000

Manufacturing and finishing

CapabilityC26000C36000
Sheet metalYes—
Default conditionOH02
Relative cost$$$$ High$$$ Premium
Min. machined wall0.8 mm0.5 mm
Best machined surfaceRa 1.6 µmRa 0.8 µm

Both are offered for CNC machining. Both take the same 9 finishes: Chrome Plating, Copper Plating, Electroless Nickel (EN), Electropolishing, Gold Plating, Nickel Plating, Painting, Silver Plating, Tin Plating.

C26000 vs C36000 — frequently asked

Is C36000 stronger than C26000?

Yes. C36000 has a typical yield strength of 310 MPa (45 ksi) against 105 MPa (15.2 ksi) for C26000 — about 195% more. Tensile strength is 385 MPa (55.8 ksi) vs 325 MPa (47.1 ksi).

Which is cheaper, C26000 or C36000?

C36000 is the lower-cost material: it sits in the premium tier ($$$) while C26000 is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, C26000 or C36000?

C36000. Its machinability rates excellent (100/100) against poor (30/100) for C26000; for welding the order is C26000 first (fair, 40/100) then C36000 (poor, 20/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in C26000 and C36000 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.