Copper Alloy Cu-FRTP vs Cu-OF1
Copper Alloy · grade comparison
Copper Alloy Cu-FRTP and Cu-OF1 are both copper alloy grades. Both yield at about 305 MPa — strength does not separate them. Cu-OF1 is the more ductile: elongation 12% versus 8% for Cu-FRTP, and Cu-FRTP is harder (100 HB vs 95 HB). 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.
Cu-FRTP vs Cu-OF1: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34 · Shear Strength 200 MPa29 ksi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 8.94 g/cm³0.32 lb/in³ · Liquidus Temperature 1,083°C1,981 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Min Service Temperature
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17 µm/m·K9.4 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 150°C302 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 39 kN·m/kg
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.
Manufacturing and finishing
| Capability | Cu-FRTP | Cu-OF1 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
Cu-FRTP vs Cu-OF1 — frequently asked
What is the difference between Cu-FRTP and Cu-OF1?
Copper Alloy Cu-FRTP and Cu-OF1 are both copper alloy grades. Both yield at about 305 MPa — strength does not separate them. Cu-OF1 is the more ductile: elongation 12% versus 8% for Cu-FRTP, and Cu-FRTP is harder (100 HB vs 95 HB).
Which is cheaper, Cu-FRTP or Cu-OF1?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Cu-FRTP or Cu-OF1?
Cu-OF1. Its weldability rates good (68/100) against fair (35/100) for Cu-FRTP.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Cu-FRTP and Cu-OF1 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.