Copper Alloy CuAg0.04P
EN CuAg0.04P
CuAg0.04P (CR014A) is a phosphorus-deoxidised, silver-bearing copper rod grade that combines the weldability and brazeability of P-deoxidised copper with silver's resistance to softening at temperature.
Reference datasheet — CuAg0.04P is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the R240 condition
CuAg0.04P tempers and conditions
CuAg0.04P is supplied in 8 conditions, soft to hard. R240 is the default FabDigit quotes; the values on this page are for it.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As cast | Feedstock condition for rolling/extrusion mills; not a structural condition. | 55 | 160 | 35 | 42 HB | 95 % IACS |
Annealed / soft | Choose for maximum conductivity and deep forming/bending of rod, tube and profile. | 70 | 220 | 45 | 45 HB | 96 % IACS |
Thermomechanically controlled processed | Mill-standard supply when the customer will anneal or draw the material himself. | 100 | 220 | 35 | 57 HB | 95 % IACS |
Lightly drawn / quarter hard | Slight cold work for straightness and improved surface while keeping high ductility. | 150 | 240 | 28 | 68 HB | 95 % IACS |
R240Default Half hard, cold drawn | The usual stock condition for conductor rod, commutator and busbar machining — good strength with workable ductility. | 200 | 265 | 18 | 85 HB | 94 % IACS |
Drawn, medium hard | Intermediate step between half hard and hard for rod requiring higher proof stress. | 220 | 275 | 12 | 90 HB | 94 % IACS |
Hard drawn | Pick where the part must resist creep/softening in service, e.g. commutator segments and hard-drawn conductors. | 270 | 310 | 8 | 100 HB | 93 % IACS |
Extra hard drawn | Maximum cold-worked strength for small-section rod and wire; very low ductility. | 300 | 330 | 5 | 108 HB | 92 % IACS |
What is CuAg0.04P?
CuAg0.04P (CR014A) is a phosphorus-deoxidised, silver-bearing copper rod grade that combines the weldability and brazeability of P-deoxidised copper with silver's resistance to softening at temperature. It is chosen for welded and brazed conductor and heat-transfer parts, available cast and in drawn R200–R300 tempers, with 94 % IACS, 360 W/m·K, and in the default condition 265 MPa tensile, 200 MPa yield, 18 % elongation and 85 HB / 48 HRB to 250 °C. Phosphorus deoxidation costs some conductivity relative to CuAg0.04 or Cu-OF, and machinability remains low (score 28), so use the oxygen-free grades where maximum conductivity governs. CuAg0.04P has a density of 8.93 g/cm³ (0.323 lb/in³), heavier than 82% of copper alloy grades. It melts at 1,065°C (1,949 °F). CuAg0.04P has a yield strength of 200 MPa (29 ksi) and a tensile strength of 265 MPa (38.4 ksi) — weaker than 54% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 122 GPa (17.7 Msi).
What is CuAg0.04P used for?
- brazed electrical assemblies
- heat exchanger tube stock
- welded conductor components
Advantages
- Readily welded — 85/100, better than 95% of copper alloy grades
- Conducts heat well — 360 W/m·K (208 BTU/hr·ft·°F), better than 90% of copper alloy grades
- High electrical conductivity — 94 % IACS, better than 90% of copper alloy grades
- Forms and bends easily — 70/100, better than 80% of copper alloy grades
CuAg0.04P properties
Typical room-temperature values for CuAg0.04P-R240; bars are the position among copper alloy grades.
Physical3
CuAg0.04P has a density of 8.93 g/cm³ (0.323 lb/in³), heavier than 82% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical13
CuAg0.04P has a yield strength of 200 MPa (29 ksi) and a tensile strength of 265 MPa (38.4 ksi) — weaker than 54% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 122 GPa (17.7 Msi).
Thermal6
CuAg0.04P is rated for continuous service to 250°C (482 °F). It conducts heat at 360 W/m·K (208 BTU/hr·ft·°F), better than 90% of copper alloy grades. Thermal expansion is 17.5 µm/m·K (9.72 µin/in·°F).
Electrical3
CuAg0.04P conducts electricity at 94 % IACS, better than 90% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), better than 69% of copper alloy grades.
Sustainability4
Producing a kilogram of CuAg0.04P takes about 57 MJ of energy and emits 3.8 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 30%.
Manufacturability8
CuAg0.04P's machinability is poor (28/100, worse than 78% of copper alloy grades); weldability excellent (85/100); formability very good (70/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. CuAg0.04P is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CuAg0.04P
Is CuAg0.04P easy to machine?
Gummy like pure copper — use sharp positive-rake tools, high speed, low feed and generous flood coolant; expect ~20 % of AISI 1212, best results in R240/R290 temper.
Can CuAg0.04P be welded?
Excellent for TIG/MIG, resistance and oxy-fuel welding — phosphorus deoxidation removes hydrogen-embrittlement risk; preheat 150–400 °C on heavy sections because of high heat conduction.
Can CuAg0.04P be formed, bent or molded?
Cold heads, bends and swages readily in R200/R220; interstage anneal 400–600 °C, and note the silver raises the recrystallisation temperature ~100 °C above plain copper.
CuAg0.04P chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Agsilver counted in the copper content; raises softening temperature | 0.03 – 0.05 | 0.04 |
| Pdeoxidiser; low-P range keeps conductivity high | 0 – 0.01 | 0.01 |
| Biimpurity limit | ≤ 5×10⁻⁴ | |
| Pbimpurity limit | ≤ 0.01 | |
| CuCu + Ag ≥ 99.90 % | ≥ 99.9 (balance) |
What surface finishes work on CuAg0.04P?
Not anodisable; tin, silver or nickel plate for contacts, or polish/lacquer — bare surfaces oxidise and tarnish quickly.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Equivalent designations
Standards and trade names that resolve to Copper Alloy CuAg0.04P in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CR014A
How much does CuAg0.04P cost?
CuAg0.04P is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
CuAg0.04P — frequently asked
What is CuAg0.04P used for?
CuAg0.04P is typically used for brazed electrical assemblies, heat exchanger tube stock and welded conductor components. In short: weldable silver-bearing copper; no hydrogen embrittlement risk; 94 % IACS with 250 °C service.
What is the yield strength of CuAg0.04P?
CuAg0.04P has a typical yield strength of 200 MPa (29 ksi) and a tensile strength of 265 MPa (38.4 ksi) — weaker than 54% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is CuAg0.04P easy to machine?
Not especially — machinability is rated poor (28/100, worse than 78% of copper alloy grades). Gummy like pure copper — use sharp positive-rake tools, high speed, low feed and generous flood coolant; expect ~20 % of AISI 1212, best results in R240/R290 temper.
Can CuAg0.04P be welded?
Yes — weldability is rated excellent (85/100). Excellent for TIG/MIG, resistance and oxy-fuel welding — phosphorus deoxidation removes hydrogen-embrittlement risk; preheat 150–400 °C on heavy sections because of high heat conduction.
What surface finishes work on CuAg0.04P?
Not anodisable; tin, silver or nickel plate for contacts, or polish/lacquer — bare surfaces oxidise and tarnish quickly.
Can CuAg0.04P be formed, bent or molded?
Cold heads, bends and swages readily in R200/R220; interstage anneal 400–600 °C, and note the silver raises the recrystallisation temperature ~100 °C above plain copper.
What is the maximum service temperature of CuAg0.04P?
CuAg0.04P is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CuAg0.04P-R240 and CuAg0.04P Cast?
R240 is the default condition — the usual stock condition for conductor rod, commutator and busbar machining — good strength with workable ductility. Cast: feedstock condition for rolling/extrusion mills; not a structural condition. Yield strength is 200 MPa in R240 versus 55 MPa in Cast.
How much does CuAg0.04P cost?
CuAg0.04P is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 1976 — Copper and copper alloys: cast unwrought copper products (CR014A) — CEN (2012)
- EN 13601 — Copper rod, bar and wire for general electrical purposes — CEN (2021)
- EN 1412 — Copper and copper alloys: European numbering system — CEN (2016)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- CDA / copper.org alloy property data for deoxidised and silver-bearing coppers — Copper Development Association (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.