MEI 63L
Overview
MEI-63L is the lead-free version of Yellow Brass certified to RoHS and drinking water standards (Pb £ 50 ppm). Identical mechanical and physical
properties to MEI-63 while meeting stringent environmental regulations. Ideal for food-contact and potable water applications.
| CHEMICAL COMPOSITION (wt. %) | ALLOY DESIGNATIONS | COIL / SHEET SPECIFICATIONS | |||
|---|---|---|---|---|---|
| Element | Composition (%) | Standard | Designation | Specification | Range |
| Cu | 62.00 – 64.00 | IS | IS 410 | Thickness (mm) | 0.04 – 3.0 |
| Fe | ≤0.01 | JIS | C2720 | Width (mm) | 6.00 – 406 |
| Pb | ≤0.005 [50 ppm max] | ISO | CuZn37 | Inner Dia. (mm) | 100/150/200/300 0/400/500 |
| Ni | ≤0.01 | ASTM | C27200 | Coil Wt. (kg/mm) | 1.0 – 4.0 |
| Zn | Rem. | BS | CZ108 | Sheet Length (m) | 0.50 – 4.00 |
| MECHANICAL PROPERTIES — typical values at 20°C | ||||||
|---|---|---|---|---|---|---|
| Temper | Code | HV | Tensile MPa | Yield MPa | Elong. % | Grain Size mm |
| Annealed | O | 60–75 | 285–340 | ≤170 | ≥45 | 0.035–0.100 |
| 1/4 Hard | H01 | 75–90 | 340–370 | ≥170 | ≥40 | 0.015–0.050 |
| 1/2 Hard | H02 | 95–125 | 390–450 | ≥220 | ≥28 | ≤0.015 |
| 3/4 Hard | H03 | 125–145 | 440–490 | ≥370 | ≥10 | ≤0.010 |
| Hard | H04 | 140–160 | 480–550 | ≥410 | ≥5 | ≤0.010 |
| Extra Hard | H06 | 160–185 | 540–630 | ≥460 | — | ≤0.005 |
| Spring Hard | H08 | ≥185 | ≥630 | ≥550 | — | ≤0.005 |
| 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) |
| 8.44 | 24 | 116 | 108 | 377 |
| FABRICATION PROPERTIES | |||
|---|---|---|---|
| Fabrication Property | Rating | Fabrication Property | Rating |
| Capacity for Cold Working | Excellent | Soft Soldering | Excellent |
| Machinability | Less suitable | Resistance Welding | Good |
| Electroplating | Excellent | Gas Shielded Arc Welding | Fair |
| Hot Dip Tinning | Excellent | Laser Welding | Fair |
| CORROSION RESISTANCE |
|---|
|
MEI-63L has the same corrosion behaviour as MEI-63 Yellow Brass. Good resistance to water, water vapor, saline solutions, organic liquids, land/sea/industrial atmosphere. Not resistant to acids or hydrous ammonia without stress relief. Fully RoHS and drinking water compliant.
|
| TYPICAL APPLICATIONS | |
|---|---|
| • Handicrafts and decorative goods | • Button industry components |
| • Food grade utensils and fittings | • Potable water contact applications |
| • Jewelry and metal goods | |