MEI 110
Overview
MEI-110 (Cu-ETP) is the standard commercial wrought copper with 100% IACS electrical conductivity. The industry standard for sheet, strip, wire and rod
across electrical engineering, stamping, transformer coils and heat sink applications.
| CHEMICAL COMPOSITION (wt. %) | ALLOY DESIGNATIONS | COIL / SHEET SPECIFICATIONS | |||
|---|---|---|---|---|---|
| Element | Composition (%) | Standard | Designation | Specification | Range |
| Cu | ≥99.90 | IS | IS 191/1897 | Thickness (mm) | 0.04 – 3.0 |
| O | 0.005 – 0.040 | JIS | C1100 | Width (mm) | 6.00 – 406 |
| ISO | Cu ETP | Inner Dia. (mm) | 100/150/200/300/400/500 | ||
| ASTM | C11000 | Coil Wt. (kg/mm) | 1.0 – 4.0 | ||
| BS | C101 | Sheet Length (m) | 0.50 – 4.00 | ||
| MECHANICAL PROPERTIES — typical values at 20°C | ||||||
|---|---|---|---|---|---|---|
| Temper | Code | HV | Tensile MPa | Yield MPa | Elong. T<0.1 | Elong. T>0.1 |
| Annealed | O | 40–60 | 200–250 | ≤100 | ≥20 | ≥35 |
| 1/4 Hard | H01 | 55–75 | 220–260 | ≤140 | ≥10 | ≥15 |
| 1/2 Hard | H02 | 70–90 | 240–290 | ≥180 | ≥5 | ≥10 |
| Hard | H04 | 90–110 | 290–360 | ≥250 | ≥2 | ≥4 |
| Extra Hard | H06 | ≥110 | ≥360 | ≥320 | — | — |
| PHYSICAL PROPERTIES — annealed temper at 20°C | ||||
|---|---|---|---|---|
| Density (g/cm³) | Elec. Conductivity (% IACS) | Thermal Conductivity (W/m·K) | Modulus of Elasticity (GPa) | Specific Heat (J/kg·K) |
| 8.94 | 100 | 388 | 127 | 385 |
| FABRICATION PROPERTIES | |||
|---|---|---|---|
| Fabrication Property | Rating | Fabrication Property | Rating |
| Capacity for Cold Working | Excellent | Soft Soldering | Excellent |
| Machinability | Less suitable | Resistance Welding | Less suitable |
| Electroplating | Excellent | Gas Shielded Arc Welding | Less suitable |
| Hot Dip Tinning | Excellent | Laser Welding | Less suitable |
| CORROSION RESISTANCE |
|---|
|
MEI-110 is generally less subject to corrosion than other engineering metals. Resistant to industrial atmosphere, industrial and drinking water (max flow 4.5–6.0 ft/s), pure water vapour, non-oxidizing acids, alkalis (except ammonia/cyanide compounds) and neutral saline solutions. Not resistant to oxidizing acids, hydrous ammonia, halogenated gases or seawater at high flow rates.
|
| TYPICAL APPLICATIONS | |
|---|---|
| • General electrical applications and stamped parts | • Transformer coils and cable strips |
| • Heat sinks and thermal management components | • Busbars and electrical connectors |