Copper Alloy CuAg0.07P-R200
Temper · default condition
EN CuAg0.07P
R200 = annealed (soft), Rm ≥ 200 MPa
Fully annealed condition for deep drawing, bending and forming of conductor parts before final brazing.
Values for the R200 condition
Other CuAg0.07P tempers and conditions
CuAg0.07P is listed in 8 conditions; see the grade overview at CuAg0.07P.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
R200DefaultThis page Annealed (soft), Rm ≥ 200 MPa | Fully annealed condition for deep drawing, bending and forming of conductor parts before final brazing. | 70 | 225 | 45 | 45 HB | 98 % IACS |
Thermomechanically controlled processed | Hot-worked mill product supplied without guaranteed mechanical values; used as feedstock for further drawing or forging. | 70 | 210 | 40 | 43 HB | 98 % IACS |
Light cold work (quarter hard), Rm ≥ 220 MPa | Lightly drawn/rolled strip and rod where mild stiffening is needed but bending is still required. | 150 | 240 | 30 | 62 HB | 97 % IACS |
Half hard, Rm ≥ 240 MPa | General-purpose semi-hard bar and strip for busbars and commutator segments that are still bent on assembly. | 200 | 265 | 15 | 76 HB | 97 % IACS |
Cold worked, Rm ≥ 250 MPa | Standard drawn rod/profile temper for machined contact and commutator parts. | 230 | 275 | 10 | 85 HB | 96.5 % IACS |
Hard, Rm ≥ 290 MPa | Hard strip/rod for commutator segments and springy contacts that must survive brazing without softening. | 280 | 320 | 5 | 95 HB | 96 % IACS |
Extra hard, Rm ≥ 300 MPa | Heavily drawn temper where maximum as-brazed strength and creep resistance are needed. | 300 | 330 | 4 | 102 HB | 96 % IACS |
Hard drawn wire/rod, Rm ≥ 360 MPa | Hard-drawn wire and small rod for windings, trolley wire and welding-machine conductors requiring softening resistance. | 350 | 385 | 2.5 | 112 HB | 95.5 % IACS |
What is CuAg0.07P-R200?
CuAg0.07P-R200 is CuAg0.07P in the R200 temper — fully annealed condition for deep drawing, bending and forming of conductor parts before final brazing. CuAg0.07P-R200 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 118 GPa (17.1 Msi). CuAg0.07P-R200 has a density of 8.9 g/cm³ (0.322 lb/in³), heavier than 77% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Advantages
- High electrical conductivity — 98 % IACS, better than 94% of copper alloy grades
- Forms and bends easily — 95/100, better than 94% of copper alloy grades
- Ductile — tolerates forming and impact — 45%, better than 91% of copper alloy grades
- Conducts heat well — 380 W/m·K (219.6 BTU/hr·ft·°F), better than 91% of copper alloy grades
- Readily welded — 72/100, better than 88% of copper alloy grades
Limitations
- Difficult to machine — 20/100, worse than 98% of copper alloy grades
- Low strength — 70 MPa (10.2 ksi), worse than 93% of copper alloy grades
CuAg0.07P-R200 properties
Typical room-temperature values for CuAg0.07P-R200; 12 are specific to this condition. Other listed values are CuAg0.07P reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
CuAg0.07P-R200 has a density of 8.9 g/cm³ (0.322 lb/in³), heavier than 77% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical13
CuAg0.07P-R200 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 118 GPa (17.1 Msi).
Thermal6
CuAg0.07P-R200 is rated for continuous service to 300°C (572 °F). It conducts heat at 380 W/m·K (219.6 BTU/hr·ft·°F), better than 91% of copper alloy grades. Thermal expansion is 17.7 µm/m·K (9.83 µin/in·°F).
Electrical3
CuAg0.07P-R200 conducts electricity at 98 % IACS, better than 94% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of CuAg0.07P-R200 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 30%.
Manufacturability7
CuAg0.07P-R200's machinability is poor (20/100, worse than 98% of copper alloy grades); weldability very good (72/100); formability excellent (95/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CuAg0.07P-R200
Is CuAg0.07P easy to machine?
Gummy like pure copper (≈20 % of AISI 1212) — use sharp positive-rake tools, high speed, generous soluble-oil coolant; cold-worked tempers cut noticeably cleaner than annealed.
Can CuAg0.07P be welded?
Readily TIG/MIG/resistance welded and phosphorus-deoxidised so it is immune to hydrogen embrittlement; preheat thick sections (high thermal conductivity) and expect local annealing to R200 in the HAZ.
Can CuAg0.07P be formed, bent or molded?
Excellent cold formability in R200 — deep drawing, coining and tight bends; interanneal at 400–600 °C, but note the silver raises the required anneal temperature versus plain Cu.
What surface finishes work on CuAg0.07P?
Not anodisable; solders and brazes very easily, takes bright tin, silver or nickel plating, and polishes to a high lustre — protect with lacquer or benzotriazole to prevent tarnish.
CuAg0.07P 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 raises the softening/recrystallisation temperature | 0.06 – 0.08 | 0.07 |
| Plow-P deoxidation; keeps conductivity high while removing oxygen | 0 – 0.01 | 0.01 |
| Biimpurity limit | ≤ 5×10⁻⁴ | — |
| Pbimpurity limit | ≤ 0.01 | — |
| CuCu + Ag ≥ 99.90 %, remainder impurities per EN 1976/EN 13601 | ≥ 99.9 (balance) | — |
CuAg0.07P-R200 — frequently asked
What is CuAg0.07P-R200 used for?
CuAg0.07P-R200 is typically used for brazed busbar joints, heat exchanger tubing and welded electrical hardware. In short: silver-bearing deoxidized copper; resists brazing-cycle softening; 98 % IACS conductor grade.
What is the yield strength of CuAg0.07P-R200?
CuAg0.07P-R200 has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is CuAg0.07P-R200 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 98% of copper alloy grades). Gummy like pure copper (≈20 % of AISI 1212) — use sharp positive-rake tools, high speed, generous soluble-oil coolant; cold-worked tempers cut noticeably cleaner than annealed.
Can CuAg0.07P-R200 be welded?
Yes — weldability is rated very good (72/100). Readily TIG/MIG/resistance welded and phosphorus-deoxidised so it is immune to hydrogen embrittlement; preheat thick sections (high thermal conductivity) and expect local annealing to R200 in the HAZ.
What surface finishes work on CuAg0.07P-R200?
Not anodisable; solders and brazes very easily, takes bright tin, silver or nickel plating, and polishes to a high lustre — protect with lacquer or benzotriazole to prevent tarnish.
Can CuAg0.07P-R200 be formed, bent or molded?
Excellent cold formability in R200 — deep drawing, coining and tight bends; interanneal at 400–600 °C, but note the silver raises the required anneal temperature versus plain Cu.
What is the maximum service temperature of CuAg0.07P-R200?
CuAg0.07P-R200 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CuAg0.07P-R200 and CuAg0.07P-R360?
R200 is the default condition — fully annealed condition for deep drawing, bending and forming of conductor parts before final brazing. R360: hard-drawn wire and small rod for windings, trolley wire and welding-machine conductors requiring softening resistance. Yield strength is 70 MPa in R200 versus 350 MPa in R360.
Sources
- EN 1976 — Copper and copper alloys: cast unwrought copper products (material designations CW014A–CW016A) — CEN (2012)
- EN 13601 — Copper rod, bar and wire for general electrical purposes (tempers R200–R360) — CEN (2021)
- EN 1652 / EN 13599 — Copper plate, sheet and strip for electrical purposes — CEN (2014)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- CDA alloy datasheets, silver-bearing coppers (C10400–C10700 analogues) — Copper Development Association (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.