Special brass 23

Looser Special Brass 23 (LSM 23) – C/GZ-CuZn40Fe DIN 1709

Chemical composition (DIN 1709)

Element	Cu	Fe	Zn	Mn	Ni*	Sn	AI**	P**	Pb**	Si**
Min. [%]	56	0.2	8	-	-	-	-	-	-	-
Max. [%]	62	1.2	Rest	2.5	2	1	0.1	0.05	1	0.1

* count as Cu / ** other admixtures max 1,2%

Mechanical properties (DIN EN 1982:2017-11)

		Sand casting-G	Centrifugal casting-GZ
Yield point R_p0,2	[N/mm²]	≥ 130	≥ 110
Tensile strength R_m	[N/mm²]	≥ 300	≥ 220
Brinell hardness	[HB]	≥ 75	≥ 70
Elongation at fracture A	[%]	≥ 15	≥ 6
Bending fatigue strength* R_bw	[N/mm²]	± 155	≥ 75
Modulus of elasticity** E	[kN/mm²]	≥ 90	≥ 90

* Guideline value with 10⁸ load cycles and at 20°C / ** Guideline value

The sample bar is removed from the casting in the case of centrifugal castings and continuous castings. The sample position – e.g. lengthwise or crosswise sample – must be agreed between orderer and manufacturer: the values specified in the table apply only to wall thicknesses up to 50 mm for the blank casting. In the case of wall thicknesses over 50 mm, with the wall thickness of the blank casting being the decisive factor, it must be anticipated that the strength and hardness values are lower. This applies in particular to the yield point.
It must not be expected that the strength and hardness values are uniformly high at all points of the casting. In general, the values in the outer layers will be higher than in the core zone.

Physical properties (Guideline values)

Coefficient of thermal expansion	[10^-6/K]	18.5	Electrical conductivity	[m/Wmm²]	8.5
Thermal conductivity	[W/mK]	50	Specific gravity	[kg/dm³]	8.6

Material designation

DIN EN 1982			DIN 1709
Abbreviated designation	Number	Casting method	Abbreviated designation	Number
-	-	G	G-CuZn40Fe	2.0590.01
-	-	GZ	GZ-CuZn40Fe	2.0590.03

G = Sand casting; GZ = Centrifugal casting

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 23
PDF

Open >