Copper Alloy TAg0.1-M
Heat-treated state · default condition
M = thermomechanically controlled processed
Pick the soft annealed (O60) state for deep drawing, coil winding and subsequent cold work: 101% IACS and 48% elongation, at only 70 MPa yield.
Values for the M condition
Other TAg0.1 tempers and conditions
TAg0.1 is listed in 6 conditions; see the grade overview at TAg0.1.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot rolled / hot extruded | Pick for cost-driven large-section and profiled busbars: the hot rolled or extruded state gives 100.5% IACS and 45% elongation close to annealed, but the surface carries mill scale. | 65 | 220 | 45 | 42 HB | 100.5 % IACS |
MDefaultThis page Thermomechanically controlled processed | Pick the soft annealed (O60) state for deep drawing, coil winding and subsequent cold work: 101% IACS and 48% elongation, at only 70 MPa yield. | 70 | 235 | 48 | 45 HB | 101 % IACS |
Quarter hard | Choose quarter hard (about 11% cold work) for terminals and washers that need light bending plus some stiffness; 195 MPa yield with 30% elongation and 100% IACS. | 195 | 260 | 30 | 65 HB | 100 % IACS |
Half hard | Use half hard (about 21% cold work) for busbars, conductive strips and switch bridges that balance 250 MPa yield against 18% elongation. | 250 | 300 | 18 | 80 HB | 99.5 % IACS |
Hard drawn / hard rolled | Pick hard drawn or hard rolled stock (about 37% cold work) for commutator segments, rotor bars and contact wire; the silver addition retains 320 MPa yield after brazing or soldering heat cycles. | 320 | 365 | 8 | 100 HB | 98 % IACS |
Extra hard / spring | Choose the heavily cold worked H06–H08 strip or wire for springy conductive parts and fine contact wire needing maximum stiffness at 380 MPa yield; elongation falls to 3%. | 380 | 420 | 3 | 115 HB | 97 % IACS |
What is TAg0.1-M?
TAg0.1-M is TAg0.1 heat treated to M — pick the soft annealed (O60) state for deep drawing, coil winding and subsequent cold work: 101% IACS and 48% elongation, at only 70 MPa yield. TAg0.1-M has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 48% and the elastic modulus is 115 GPa (16.7 Msi). TAg0.1-M has a density of 8.9 g/cm³ (0.322 lb/in³), heavier than 77% of copper alloy grades. It melts at 1,070°C (1,958 °F).
Advantages
- High electrical conductivity — 101 % IACS, better than 98% of copper alloy grades
- Ductile — tolerates forming and impact — 48%, better than 97% of copper alloy grades
- Conducts heat well — 390 W/m·K (225.3 BTU/hr·ft·°F), better than 96% of copper alloy grades
- Forms and bends easily — 95/100, better than 94% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
Limitations
- Low strength — 70 MPa (10.2 ksi), worse than 93% of copper alloy grades
- Difficult to machine — 25/100, worse than 86% of copper alloy grades
TAg0.1-M properties
Typical room-temperature values for TAg0.1-M; 14 are specific to this condition. Other listed values are TAg0.1 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
TAg0.1-M has a density of 8.9 g/cm³ (0.322 lb/in³), heavier than 77% of copper alloy grades. It melts at 1,070°C (1,958 °F).
Mechanical12
TAg0.1-M has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 48% and the elastic modulus is 115 GPa (16.7 Msi).
Thermal6
TAg0.1-M is rated for continuous service to 300°C (572 °F). It conducts heat at 390 W/m·K (225.3 BTU/hr·ft·°F), better than 96% of copper alloy grades. Thermal expansion is 17.7 µm/m·K (9.83 µin/in·°F).
Electrical3
TAg0.1-M conducts electricity at 101 % IACS, better than 98% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of TAg0.1-M 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
TAg0.1-M's machinability is poor (25/100, worse than 86% of copper alloy grades); weldability fair (40/100); 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 TAg0.1-M
Is TAg0.1 easy to machine?
Shows the same built-up-edge and gumming behaviour as pure copper: sharp, high positive-rake edges, high speed with light feed and plenty of emulsion coolant. Machinability is roughly one quarter that of free-cutting brass, and hard tempers give a better surface finish than the soft temper.
Can TAg0.1 be welded?
Very high thermal conductivity demands high heat input or preheat; TIG/MIG with ERCu filler or resistance welding are preferred. Avoid reducing atmospheres and hydrogen-bearing processes on oxygen-containing lots to prevent hydrogen embrittlement, and note that the weld zone anneals and loses the work-hardening benefit of the silver addition.
Can TAg0.1 be formed, bent or molded?
Cold formability in the soft temper is outstanding (deep drawing, bending, coil winding); in hard tempers keep bend radius at 2t or more. Interanneal at 400–600 °C; stress-relief can be run at higher temperatures than pure copper without softening.
What surface finishes work on TAg0.1?
Not anodizable. Silver, tin or nickel plating is normal to improve contact resistance and oxidation resistance; chemical polishing plus passivation and clear lacquer also prevents tarnish.
TAg0.1 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 within the Cu+Ag total | 0.06 – 0.12 | 0.09 |
| Cu+Agminimum combined content specified in GB/T 5231 | ≥ 99.9 | 99.95 |
| Otough-pitch type; oxygen-free TAg0.1-01 has O ≤ 0.003 | ≤ 0.05 | 0.03 |
| Bi | ≤ 0 | — |
| Sb | ≤ 0.01 | — |
| As | ≤ 0.01 | — |
| Fe | ≤ 0.01 | — |
| Pb | ≤ 0.01 | — |
| S | ≤ 0.01 | — |
| Sn | ≤ 0 | — |
| Zn | ≤ 0.01 | — |
| Cu | balance | — |
TAg0.1-M — frequently asked
What is TAg0.1-M used for?
TAg0.1-M is typically used for commutator bars, motor windings and high-temperature electrical contacts. In short: softening-resistant conductor copper; full 101 % IACS conductivity; silver-addition cost premium.
What is the yield strength of TAg0.1-M?
TAg0.1-M has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 93% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is TAg0.1-M easy to machine?
Not especially — machinability is rated poor (25/100, worse than 86% of copper alloy grades). Shows the same built-up-edge and gumming behaviour as pure copper: sharp, high positive-rake edges, high speed with light feed and plenty of emulsion coolant. Machinability is roughly one quarter that of free-cutting brass, and hard tempers give a better surface finish than the soft temper.
Can TAg0.1-M be welded?
With care — weldability is rated fair (40/100). Very high thermal conductivity demands high heat input or preheat; TIG/MIG with ERCu filler or resistance welding are preferred. Avoid reducing atmospheres and hydrogen-bearing processes on oxygen-containing lots to prevent hydrogen embrittlement, and note that the weld zone anneals and loses the work-hardening benefit of the silver addition.
What surface finishes work on TAg0.1-M?
Not anodizable. Silver, tin or nickel plating is normal to improve contact resistance and oxidation resistance; chemical polishing plus passivation and clear lacquer also prevents tarnish.
Can TAg0.1-M be formed, bent or molded?
Cold formability in the soft temper is outstanding (deep drawing, bending, coil winding); in hard tempers keep bend radius at 2t or more. Interanneal at 400–600 °C; stress-relief can be run at higher temperatures than pure copper without softening.
What is the maximum service temperature of TAg0.1-M?
TAg0.1-M 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 TAg0.1-M and TAg0.1-T?
M is the default condition — pick the soft annealed (O60) state for deep drawing, coil winding and subsequent cold work: 101% IACS and 48% elongation, at only 70 MPa yield. T: choose the heavily cold worked H06–H08 strip or wire for springy conductive parts and fine contact wire needing maximum stiffness at 380 MPa yield; elongation falls to 3%. Yield strength is 70 MPa in M versus 380 MPa in T.
Sources
- ASTM B152/B152M Copper Sheet, Strip, Plate and Rolled Bar (incl. C11300) — ASTM International (2019)
- CDA Alloy Datasheet C11300 (Silver-bearing tough pitch copper) — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (Copper and Copper Alloys) — ASM International (2005)
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.