Looser Special Brass 22 (LSM 22) – CuZn37Mn3Al2PbSi DIN EN 12164/12167
Looser Special Brass 22 is a construction material with high static strength and good elongation. It is resistant to weather conditions. Suitable for increased demands on sliding loads.
Chemical composition (DIN EN 12164:2016-11)
| Element | Cu | Zn | Mn | Al | Pb | Si | Fe | Ni | Sn | Other |
|---|---|---|---|---|---|---|---|---|---|---|
| Min. [%] | 57 | - | 1,5 | 1,3 | 0,2 | 0,3 | - | - | - | - |
| Max. [%] | 59 | Rest | 3 | 2,3 | 0,8 | 1,3 | 1 | 1 | 0,4 | 0,3 |
Mechanical properties (DIN EN 12164:2016-11)
| Round bars | Ø 7 – 50 mm | Ø 55 – 80 mm | |
|---|---|---|---|
| Yield point Rp0,2 | [N/mm2] | ≥ 370 | ≥ 280 |
| Tensile strength Rm | [N/mm2] | ≥ 590 | ≥ 540 |
| Brinell hardness | [HB] | - | - |
| Elongation at fracture A | [%] | ≥ 10 | ≥ 15 |
Physical properties (Guideline values)
| Coefficient of thermal expansion | [10-6/K] | 20 | Electrical conductivity | [m/Wmm2] | 7,5 |
| Thermal conductivity | [W/mK] | 63 | Specific gravity | [kg/dm3] | 8,1 |
Standards
| DIN EN 12164/12167 | CuZn37Mn3Al2PbSi | ASTM | Alloy C 67400 |
| DIN 17660/17672 | CuZn40Al2 | BS 2874 | CZ 114 |
Material designation
| DIN EN 12164 | DIN 17660 | ||
|---|---|---|---|
| Abbreviated designation | Number | Abbreviated designation | Number |
| CuZn37Mn3Al2PbSi | CW713R | CuZn40Al2 | 2.0550 |
Forms of delivery
| Range [mm] | Tolerance [mm] | Manufacturing method | |
|---|---|---|---|
| Round bars | Ø 7 - 55 | h11 | drawn |
| Round bars | Ø 60 - 80 | ± 0,8 | pressed |
| Round bars | Ø 85 - 120 | ± 1,2 | pressed |
| Round bars | Ø 130 - 200 | ± 3 | pressed |
Example uses
Structural parts for machine and apparatus construction, statically highly stressed internal parts of hydraulic valves, spindles, screw connections, plain bearings.
Machinability
Looser Special Brass 22 is easy to machine. The feed and cutting speed settings should not be too low. The material is difficult to weld, difficult to hard solder and not suitable for soft soldering. However, it is suitable for thermal forming in the temperature range from 630-680°C.
Sliding partners
Mating steel surfaces must be hardened and ground. Good lubrication is required.
Looser Special Brass 22 – Availability
- Over 70 sizes of tubular and round bars are available from stock or at short notice.
- Ready-to-install parts in accordance with customer drawing.
We will be more than pleased to advise you.
Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
