Copper Alloy CuAg0.04-H01
Supply condition
EN CuAg0.04
H01 = quarter hard
Light cold work for strip and rod that must still be bent or formed but need more stiffness than soft temper.
Values for the H01 condition
Other CuAg0.04 tempers and conditions
CuAg0.04 is listed in 9 conditions; see the grade overview at CuAg0.04.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Thermomechanically controlled processed | Cast feedstock form (EN 1978/CR011A) for subsequent hot rolling or extrusion — not a service condition. | 60 | 180 | 35 | 42 HB | 99 % IACS |
Soft annealed | Choose for maximum conductivity, deep drawing, tight bending and magnet/enamelled wire drawing stock. | 65 | 225 | 45 | 45 HB | 101 % IACS |
As hot rolled | Mill-finish hot-worked bar, tube and busbar where softness and maximum conductivity matter more than strength. | 75 | 225 | 42 | 45 HB | 100 % IACS |
H01This page Quarter hard | Light cold work for strip and rod that must still be bent or formed but need more stiffness than soft temper. | 200 | 260 | 25 | 75 HB | 99 % IACS |
Half hard | Balanced strength/formability for busbar, terminals and commutator risers that see moderate soldering heat. | 250 | 300 | 14 | 90 HB | 98.5 % IACS |
Hot rolled | Low-temperature (≈200–250 °C) treatment that removes drawing stresses while the silver keeps most of the cold-worked strength — used for commutator segments and rotor bars. | 290 | 340 | 10 | 99 HB | 99 % IACS |
H04Default Full hard | Standard stocked condition for silver-copper rod/wire — keeps its cold-worked strength through soldering and 150–250 °C service. | 310 | 360 | 8 | 105 HB | 98 % IACS |
Extra hard | Extra-hard strip/wire where maximum as-drawn strength is needed and little further forming is done. | 345 | 385 | 5 | 112 HB | 97.5 % IACS |
Spring hard | Maximum strength strip/wire for springy contacts and fine wire; almost no residual ductility. | 370 | 410 | 3 | 118 HB | 97 % IACS |
What is CuAg0.04-H01?
CuAg0.04-H01 is CuAg0.04 supplied in the H01 condition — light cold work for strip and rod that must still be bent or formed but need more stiffness than soft temper. CuAg0.04-H01 has a yield strength of 200 MPa (29 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 54% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 120 GPa (17.4 Msi). CuAg0.04-H01 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F). H04 is the default condition FabDigit quotes; H01 is available on request or by drawing note.
Advantages
- Conducts heat well — 388 W/m·K (224.2 BTU/hr·ft·°F), better than 95% of copper alloy grades
- High electrical conductivity — 99 % IACS, better than 95% of copper alloy grades
- Forms and bends easily — 80/100, better than 83% of copper alloy grades
Limitations
- Difficult to machine — 22/100, worse than 94% of copper alloy grades
CuAg0.04-H01 properties
Typical room-temperature values for CuAg0.04-H01; 20 are specific to this condition. Other listed values are CuAg0.04 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
CuAg0.04-H01 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical13
CuAg0.04-H01 has a yield strength of 200 MPa (29 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 54% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 120 GPa (17.4 Msi).
Thermal6
CuAg0.04-H01 is rated for continuous service to 220°C (428 °F). It conducts heat at 388 W/m·K (224.2 BTU/hr·ft·°F), better than 95% of copper alloy grades. Thermal expansion is 17.1 µm/m·K (9.5 µin/in·°F).
Electrical3
CuAg0.04-H01 conducts electricity at 99 % IACS, better than 95% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 58% of copper alloy grades.
Sustainability4
Producing a kilogram of CuAg0.04-H01 takes about 57 MJ of energy and emits 3.9 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
CuAg0.04-H01's machinability is poor (22/100, worse than 94% of copper alloy grades); weldability fair (35/100); formability very good (80/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CuAg0.04-H01
Is CuAg0.04 easy to machine?
Gummy and low-rated (~20 % of AISI 1212): use sharp positive-rake tools, high speed with low feed, generous soluble-oil coolant; hard temper machines better than annealed.
Can CuAg0.04 be welded?
Prefer GTAW/GMAW with high preheat and argon-helium shielding or resistance/friction welding; being oxygen-bearing tough pitch it must not be brazed or annealed in hydrogen-rich atmospheres (steam embrittlement).
Can CuAg0.04 be formed, bent or molded?
Excellent cold formability in O60 (deep drawing, riveting, tight bends); interstage anneals at 400–600 °C, and note the silver raises the recrystallisation temperature so anneals run hotter/longer than for Cu-ETP.
What surface finishes work on CuAg0.04?
Not anodisable — solders and brazes readily, takes tin, silver and nickel plating well; bright-polish then lacquer or allow controlled patina since bare surfaces oxidise/tarnish.
CuAg0.04 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 addition raising softening temperature; counted in the Cu+Ag total | 0.03 – 0.05 | 0.04 |
| Otough-pitch (oxygen-containing) grade; omit for the Cu-OF based CuAg0.04(OF) variants | 0.01 – 0.04 | 0.03 |
| Bi | ≤ 5×10⁻⁴ | — |
| Pb | ≤ 0.01 | — |
| Pkept low to preserve conductivity | ≤ 0 | — |
| Other impurities (total)Se+Te+Sb+As+Fe+Ni+Sn+Zn+S etc. | ≤ 0.03 | — |
| CuCu + Ag ≥ 99.90 % | balance | — |
CuAg0.04-H01 — frequently asked
What is CuAg0.04-H01 used for?
CuAg0.04-H01 is typically used for commutator bars, high-temperature electrical windings and resistance welding wheels. In short: softening-resistant tough-pitch copper; near-pure-copper conductivity; hotter service than Cu-ETP.
What is the yield strength of CuAg0.04-H01?
CuAg0.04-H01 has a typical yield strength of 200 MPa (29 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 54% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is CuAg0.04-H01 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 94% of copper alloy grades). Gummy and low-rated (~20 % of AISI 1212): use sharp positive-rake tools, high speed with low feed, generous soluble-oil coolant; hard temper machines better than annealed.
Can CuAg0.04-H01 be welded?
With care — weldability is rated fair (35/100). Prefer GTAW/GMAW with high preheat and argon-helium shielding or resistance/friction welding; being oxygen-bearing tough pitch it must not be brazed or annealed in hydrogen-rich atmospheres (steam embrittlement).
What surface finishes work on CuAg0.04-H01?
Not anodisable — solders and brazes readily, takes tin, silver and nickel plating well; bright-polish then lacquer or allow controlled patina since bare surfaces oxidise/tarnish.
Can CuAg0.04-H01 be formed, bent or molded?
Excellent cold formability in O60 (deep drawing, riveting, tight bends); interstage anneals at 400–600 °C, and note the silver raises the recrystallisation temperature so anneals run hotter/longer than for Cu-ETP.
What is the maximum service temperature of CuAg0.04-H01?
CuAg0.04-H01 is rated for continuous use to about 220°C (428 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CuAg0.04-H04 and CuAg0.04-M?
H04 is the default condition — standard stocked condition for silver-copper rod/wire — keeps its cold-worked strength through soldering and 150–250 °C service. M: cast feedstock form (EN 1978/CR011A) for subsequent hot rolling or extrusion — not a service condition. Yield strength is 310 MPa in H04 versus 60 MPa in M.
Sources
- EN 13601 — Copper and copper alloys: rod, bar and wire for electrical purposes — CEN (2021)
- EN 1977 / EN 1978 — Copper drawing stock and cathodes (CR/CW designations) — CEN (2013)
- ASTM B152/B152M — Copper Sheet, Strip, Plate and Rolled Bar (C10400/C10500/C10700) — ASTM (2019)
- CDA alloy datasheets C10400 / C10500 / C10700 (silver-bearing tough pitch copper) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.