Copper Alloy Cu-DLP vs Cu-ETP1
Copper Alloy · grade comparison
Copper Alloy Cu-DLP and Cu-ETP1 are both copper alloy grades. Cu-DLP is the stronger of the two: yield strength 100 MPa (14.5 ksi) against 70 MPa (10.2 ksi) for Cu-ETP1, about 43% more; tensile strength follows at 235 MPa (34.1 ksi) vs 220 MPa (31.9 ksi). Cu-DLP is harder — 52 HB against 45 HB for Cu-ETP1 — which matters for wear surfaces and threads. Cu-ETP1 conducts heat better (394 W/m·K vs 350 W/m·K). On the shop floor, Cu-DLP welds better (very good vs fair).
Cu-DLPChoose it when strength drives the design, or when surface hardness matters.
Cu-DLP vs Cu-ETP1: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Reduction in Area
Charpy V-Notch Impact (RT)
Same in both: Elastic (Young's) Modulus 117 GPa17 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.34 · Shear Strength 150 MPa21.8 ksi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: Liquidus Temperature 1,083°C1,981 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -250°C-418 °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.
Weldability
Brazeability / Solderability
Polishability
Same in both: Machinability 30 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Formability (cold) 95 / 100 · Castability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Carbon (primary production) 3.6 kg CO₂/kg
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 13.1 MN·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-DLP | Cu-ETP1 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Copper Plating, Electroless Nickel (EN), Gold Plating, Silver Plating.
Cu-DLP vs Cu-ETP1 — frequently asked
Is Cu-DLP stronger than Cu-ETP1?
Yes. Cu-DLP has a typical yield strength of 100 MPa (14.5 ksi) against 70 MPa (10.2 ksi) for Cu-ETP1 — about 43% more. Tensile strength is 235 MPa (34.1 ksi) vs 220 MPa (31.9 ksi).
Which is cheaper, Cu-DLP or Cu-ETP1?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Cu-DLP or Cu-ETP1?
Cu-DLP. Its weldability rates very good (70/100) against fair (50/100) for Cu-ETP1.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Cu-DLP and Cu-ETP1 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.