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Copper Alloy Cu-OF1 vs CuAg0.07

Copper Alloy · grade comparison

Copper Alloy Cu-OF1 and CuAg0.07 are both copper alloy grades. Both yield at about 300 MPa — strength does not separate them. Cu-OF1 is the more ductile: elongation 12% versus 9% for CuAg0.07, and CuAg0.07 is harder (100 HB vs 95 HB). CuAg0.07 runs hotter in service (300°C vs 150°C continuous). On the shop floor, Cu-OF1 welds better (good vs fair).

Cu-OF1Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

CuAg0.07Choose it when the part sees heat.

Cu-OF1 vs CuAg0.07: properties

Cu-OF1CuAg0.07

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

125 GPa18.1 Msi
120 GPa17.4 Msi

Shear Modulus

46 GPa6.7 Msi
45 GPa6.5 Msi

Yield Strength (0.2% offset)

300 MPa43.5 ksi
310 MPa45 ksi

Elongation at Break

12%
9%

Reduction in Area

60%
55%

Hardness, Brinell

95 HB
100 HB

Hardness, Vickers

105 HV
108 HV

Charpy V-Notch Impact (RT)

—
60 J44.3 ft·lbf

Same in both: Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34 · Tensile Strength (Ultimate) 350 MPa50.8 ksi · Shear Strength 200 MPa29 ksi · Fatigue Strength (Endurance Limit) 110 MPa16 ksi · Hardness, Rockwell B 45 HRB

Physical

Density and transition temperatures.

Density

8.94 g/cm³0.32 lb/in³
8.91 g/cm³0.32 lb/in³

Melting Point (Solidus)

1,083°C1,981 °F
1,065°C1,949 °F

Same in both: Liquidus Temperature 1,083°C1,981 °F

Thermal

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

Thermal Expansion (CTE, 20–100 °C)

17 µm/m·K9.4 µin/in·°F
17.7 µm/m·K9.8 µin/in·°F

Max Service Temperature (continuous)

150°C302 °F
300°C572 °F

Min Service Temperature

-269°C-452 °F
-250°C-418 °F

Same in both: Thermal Conductivity 388 W/m·K224 BTU/hr·ft·°F · Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

100.2 % IACS
97 % IACS

Electrical Resistivity

1.72×10⁻⁸ Ω·m0.678 µΩ·in
1.78×10⁻⁸ Ω·m0.701 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.28 V
-0.2 V

Same in both: Corrosion Resistance 62 / 100

Manufacturability

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

Machinability

27 / 100
25 / 100

Machinability Rating (AISI 1212 = 100 %)

25%
20%

Weldability

68 / 100
45 / 100

Brazeability / Solderability

95 / 100
90 / 100

Polishability

85 / 100
70 / 100

Same in both: Formability (cold) 45 / 100 · Castability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

58 MJ/kg24,936 BTU/lb
57 MJ/kg24,506 BTU/lb

Embodied Carbon (primary production)

3.6 kg CO₂/kg
3.8 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

10%
20%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

14 MN·m/kg
13.5 MN·m/kg

Modulus of Resilience

360 kJ/m³
400 kJ/m³

Thermal Diffusivity

112.7 mm²/s
113.1 mm²/s

Same in both: Specific Strength (UTS / density) 39 kN·m/kg · Thermal Shock Resistance Index 64

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 scaleCu-OF1CuAg0.07

Manufacturing and finishing

CapabilityCu-OF1CuAg0.07
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.

Cu-OF1 vs CuAg0.07 — frequently asked

What is the difference between Cu-OF1 and CuAg0.07?

Copper Alloy Cu-OF1 and CuAg0.07 are both copper alloy grades. Both yield at about 300 MPa — strength does not separate them. Cu-OF1 is the more ductile: elongation 12% versus 9% for CuAg0.07, and CuAg0.07 is harder (100 HB vs 95 HB).

Which is cheaper, Cu-OF1 or CuAg0.07?

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 welds better, Cu-OF1 or CuAg0.07?

Cu-OF1. Its weldability rates good (68/100) against fair (45/100) for CuAg0.07.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Cu-OF1 and CuAg0.07 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.