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Copper Alloy C17510 vs C70250

Copper Alloy · grade comparison

Copper Alloy C17510 and C70250 are both copper alloy grades. C70250 is the stronger of the two: yield strength 640 MPa (92.8 ksi) against 170 MPa (24.7 ksi) for C17510, about 3.8 times as much; tensile strength follows at 700 MPa (102 ksi) vs 310 MPa (45 ksi). In exchange, C17510 is the more ductile: elongation 25% versus 9% for C70250, and C70250 is harder (200 HV vs 75 HV). C70250 conducts heat better (155 W/m·K vs 105 W/m·K). On the shop floor, C70250 machines more easily (fair vs poor), C17510 welds better (good vs fair), and C70250 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.

C70250Choose it when strength drives the design, or when the part is machined in volume.

C17510 vs C70250: properties

C17510C70250

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

53 GPa7.7 Msi
50 GPa7.3 Msi

Tensile Strength (Ultimate)

310 MPa45 ksi
700 MPa102 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
640 MPa92.8 ksi

Elongation at Break

25%
9%

Reduction in Area

60%
—

Shear Strength

210 MPa30.5 ksi
425 MPa61.6 ksi

Fatigue Strength (Endurance Limit)

165 MPa23.9 ksi
285 MPa41.3 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
—

Hardness, Rockwell B

35 HRB
96 HRB

Hardness, Vickers

75 HV
200 HV

Same in both: Elastic (Young's) Modulus 131 GPa19 Msi · Bulk Modulus 115 GPa16.7 Msi · Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,000°C1,832 °F
1,065°C1,949 °F

Liquidus Temperature

1,070°C1,958 °F
1,095°C2,003 °F

Thermal

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

Thermal Conductivity

105 W/m·K60.7 BTU/hr·ft·°F
155 W/m·K89.6 BTU/hr·ft·°F

Specific Heat Capacity

418 J/kg·K0.1 BTU/lb·°F
377 J/kg·K0.09 BTU/lb·°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 · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

22 % IACS
40 % IACS

Electrical Resistivity

7.8×10⁻⁸ Ω·m3.07 µΩ·in
4.31×10⁻⁸ Ω·m1.7 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

60 / 100
62 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.2 V

Manufacturability

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

Machinability

25 / 100
35 / 100

Machinability Rating (AISI 1212 = 100 %)

18%
30%

Weldability

58 / 100
35 / 100

Formability (cold)

85 / 100
65 / 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
58 MJ/kg24,936 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
1,563 kJ/m³

Thermal Diffusivity

28.7 mm²/s
46.6 mm²/s

Thermal Shock Resistance Index

14
47

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 scaleC17510C70250

Manufacturing and finishing

CapabilityC17510C70250
CNC machiningYes—
Sheet metalYes—
Default conditionA—
Relative cost$$$$$ Specialty$$$$ 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.

C17510 vs C70250 — frequently asked

Is C70250 stronger than C17510?

Yes. C70250 has a typical yield strength of 640 MPa (92.8 ksi) against 170 MPa (24.7 ksi) for C17510 — about 3.8 times as much. Tensile strength is 700 MPa (102 ksi) vs 310 MPa (45 ksi).

Which is cheaper, C17510 or C70250?

C70250 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 C70250?

C70250. Its machinability rates fair (35/100) against poor (25/100) for C17510; for welding the order is C17510 first (good, 58/100) then C70250 (fair, 35/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in C17510 and C70250 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.