Special brass 22

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 12164/12167)

Element	Cu	Zn	Mn	AI	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

Round bars		Ø 7 – 50 mm	Ø 55 – 80 mm
Yield point R_p0,2	[N/mm²]	≥ 370	≥ 280
Tensile strength R_m	[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	CuZn40AI2	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 Sondermessing 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.

Links

Additional information can be found in this Looser Bronzen catalogue or under download.

Material data sheet
Looser Sondermessing 22
PDF

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