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Copper Alloy C17510 vs C18000

Copper Alloy · grade comparison

Copper Alloy C17510 and C18000 are both copper alloy grades, both conductive cu alloy. C18000 is the stronger of the two: yield strength 585 MPa (84.8 ksi) against 170 MPa (24.7 ksi) for C17510, about 3.4 times as much; tensile strength follows at 690 MPa (100 ksi) vs 310 MPa (45 ksi). In exchange, C17510 is the more ductile: elongation 25% versus 12% for C18000, and C18000 is harder (200 HB vs 70 HB). C18000 runs hotter in service (400°C vs 200°C continuous) and C18000 conducts heat better (200 W/m·K vs 105 W/m·K). On the shop floor, C18000 machines more easily (fair vs poor), C17510 welds better (good vs fair), and C18000 sits in a lower cost tier (high, $$$$) than C17510 (specialty, $$$$$).

C17510Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

C18000Choose it when strength drives the design, or when the part sees heat.

C17510 vs C18000: properties

C17510C18000

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

53 GPa7.7 Msi
49 GPa7.1 Msi

Bulk Modulus

115 GPa16.7 Msi
133 GPa19.3 Msi

Poisson's Ratio

0.3
0.33

Tensile Strength (Ultimate)

310 MPa45 ksi
690 MPa100 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
585 MPa84.8 ksi

Elongation at Break

25%
12%

Reduction in Area

60%
—

Shear Strength

210 MPa30.5 ksi
415 MPa60.2 ksi

Fatigue Strength (Endurance Limit)

165 MPa23.9 ksi
235 MPa34.1 ksi

Fracture Toughness (K_IC)

95 MPa·√m86.5 ksi·√in
—

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
—

Hardness, Brinell

70 HB
200 HB

Hardness, Rockwell B

35 HRB
95 HRB

Hardness, Vickers

75 HV
210 HV

Same in both: Elastic (Young's) Modulus 131 GPa19 Msi

Physical

Density and transition temperatures.

Density

8.75 g/cm³0.32 lb/in³
8.78 g/cm³0.32 lb/in³

Melting Point (Solidus)

1,000°C1,832 °F
1,030°C1,886 °F

Liquidus Temperature

1,070°C1,958 °F
1,075°C1,967 °F

Thermal

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

Thermal Conductivity

105 W/m·K60.7 BTU/hr·ft·°F
200 W/m·K116 BTU/hr·ft·°F

Specific Heat Capacity

418 J/kg·K0.1 BTU/lb·°F
376 J/kg·K0.09 BTU/lb·°F

Max Service Temperature (continuous)

200°C392 °F
400°C752 °F

Latent Heat of Fusion

—
205 J/g88.1 BTU/lb

Same in both: Thermal Expansion (CTE, 20–100 °C) 17.6 µm/m·K9.8 µin/in·°F · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

22 % IACS
48 % IACS

Electrical Resistivity

7.8×10⁻⁸ Ω·m3.07 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)

-0.2 V
-0.25 V

Same in both: Corrosion Resistance 60 / 100

Manufacturability

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

Machinability

25 / 100
50 / 100

Machinability Rating (AISI 1212 = 100 %)

18%
—

Weldability

58 / 100
35 / 100

Formability (cold)

85 / 100
30 / 100

Castability

45 / 100
—

Brazeability / Solderability

70 / 100
80 / 100

Polishability

80 / 100
75 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

65 MJ/kg27,945 BTU/lb
56 MJ/kg24,076 BTU/lb

Embodied Carbon (primary production)

4.6 kg CO₂/kg
4 kg CO₂/kg

Embodied Water

250 L/kg30 gal/lb
300 L/kg35.9 gal/lb

Typical Recycled Content

25%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

35 kN·m/kg
79 kN·m/kg

Specific Stiffness (E / density)

15 MN·m/kg
14.9 MN·m/kg

Modulus of Resilience

110 kJ/m³
1,306 kJ/m³

Thermal Diffusivity

28.7 mm²/s
60.6 mm²/s

Thermal Shock Resistance Index

14
60

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 scaleC17510C18000

Manufacturing and finishing

CapabilityC17510C18000
Default conditionAH
Relative cost$$$$$ Specialty$$$$ High
Min. machined wall0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µm

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

C17510 vs C18000 — frequently asked

Is C18000 stronger than C17510?

Yes. C18000 has a typical yield strength of 585 MPa (84.8 ksi) against 170 MPa (24.7 ksi) for C17510 — about 3.4 times as much. Tensile strength is 690 MPa (100 ksi) vs 310 MPa (45 ksi).

Which is cheaper, C17510 or C18000?

C18000 is the lower-cost material: it sits in the high tier ($$$$) while C17510 is specialty ($$$$$). 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, C17510 or C18000?

C18000. Its machinability rates fair (50/100) against poor (25/100) for C17510; for welding the order is C17510 first (good, 58/100) then C18000 (fair, 35/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in C17510 and C18000 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.