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Copper Alloy C17510 vs QCr0.5

Copper Alloy · grade comparison

Copper Alloy C17510 and QCr0.5 are both copper alloy grades. QCr0.5 is the stronger of the two: yield strength 315 MPa (45.7 ksi) against 170 MPa (24.7 ksi) for C17510, about 85% more; tensile strength follows at 420 MPa (60.9 ksi) vs 310 MPa (45 ksi). In exchange, C17510 is the more ductile: elongation 25% versus 22% for QCr0.5, and QCr0.5 is harder (125 HB vs 70 HB). C17510 is stiffer (131 GPa vs 117 GPa) and QCr0.5 runs hotter in service (400°C vs 200°C continuous). On the shop floor, QCr0.5 machines more easily (fair vs poor), C17510 welds better (good vs poor), and QCr0.5 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.

QCr0.5Choose it when strength drives the design, or when the part sees heat.

C17510 vs QCr0.5: properties

C17510QCr0.5

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

131 GPa19 Msi
117 GPa17 Msi

Shear Modulus

53 GPa7.7 Msi
44 GPa6.4 Msi

Bulk Modulus

115 GPa16.7 Msi
140 GPa20.3 Msi

Poisson's Ratio

0.3
0.33

Tensile Strength (Ultimate)

310 MPa45 ksi
420 MPa60.9 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
315 MPa45.7 ksi

Elongation at Break

25%
22%

Reduction in Area

60%
55%

Shear Strength

210 MPa30.5 ksi
270 MPa39.2 ksi

Fatigue Strength (Endurance Limit)

165 MPa23.9 ksi
150 MPa21.8 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
125 HB

Hardness, Rockwell B

35 HRB
72 HRB

Hardness, Vickers

75 HV
135 HV

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,000°C1,832 °F
1,070°C1,958 °F

Liquidus Temperature

1,070°C1,958 °F
1,080°C1,976 °F

Thermal

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

Thermal Conductivity

105 W/m·K60.7 BTU/hr·ft·°F
324 W/m·K187 BTU/hr·ft·°F

Specific Heat Capacity

418 J/kg·K0.1 BTU/lb·°F
385 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
82 % IACS

Electrical Resistivity

7.8×10⁻⁸ Ω·m3.07 µΩ·in
2.1×10⁻⁸ Ω·m0.827 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.2 V
-0.3 V

Corrosion Resistance

60 / 100
62 / 100

Manufacturability

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

Machinability

25 / 100
45 / 100

Machinability Rating (AISI 1212 = 100 %)

18%
25%

Weldability

58 / 100
30 / 100

Formability (cold)

85 / 100
45 / 100

Castability

45 / 100
40 / 100

Brazeability / Solderability

70 / 100
55 / 100

Polishability

80 / 100
70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

65 MJ/kg27,945 BTU/lb
55 MJ/kg23,646 BTU/lb

Embodied Carbon (primary production)

4.6 kg CO₂/kg
3.8 kg CO₂/kg

Embodied Water

250 L/kg30 gal/lb
320 L/kg38.3 gal/lb

Typical Recycled Content

25%
35%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

35 kN·m/kg
47 kN·m/kg

Specific Stiffness (E / density)

15 MN·m/kg
13.2 MN·m/kg

Modulus of Resilience

110 kJ/m³
424 kJ/m³

Thermal Diffusivity

28.7 mm²/s
94.7 mm²/s

Thermal Shock Resistance Index

14
66

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 scaleC17510QCr0.5

Manufacturing and finishing

CapabilityC17510QCr0.5
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 QCr0.5 — frequently asked

Is QCr0.5 stronger than C17510?

Yes. QCr0.5 has a typical yield strength of 315 MPa (45.7 ksi) against 170 MPa (24.7 ksi) for C17510 — about 85% more. Tensile strength is 420 MPa (60.9 ksi) vs 310 MPa (45 ksi).

Which is cheaper, C17510 or QCr0.5?

QCr0.5 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 QCr0.5?

QCr0.5. Its machinability rates fair (45/100) against poor (25/100) for C17510; for welding the order is C17510 first (good, 58/100) then QCr0.5 (poor, 30/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in C17510 and QCr0.5 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.