Range of

alloys

Moston 
designation

Chemical
Composition%

Mechanical
Properties

Properties
and Uses

Cu Zn 40 Al 1

M-22

Cu 57,5-60,0
Al 0,4-1,3
Mn 0,8-1,8
Zn bal.

G:
Rm* 500
Rp 0,2* 250
A5* 15
HB* 140

High strength components, valves, valve stems, fittings, marine fitings, Bearings for gear-box parts and pump parts

Cu Zn 40 Al 2

M-23

Cu 56,5-59,0
Al 1,3-2,3
Mn 1,4-2,6
Si 0,3-1,0
Zn bal.

G:
Rm* 470
Rp 0,2* 180
A5* 12
HB* 125

Good resistance to atmospheric corrosion, application for increased requirements on frictional stress. Cams, gears, wear plates, chain guides, shafts, bushings

Cu Zn 23 Al 6
Mn 4 Fe 3

M-24

Cu 63,0-65,0
Al 5,0-7,0
Mn 3,5-5,0
Fe 2,0-3,5
Zn bal.

G:
Rm* 750
Rp 0,2* 480
A5* 8
HB* 180

Gear elements, levers, shift forks, gear wheels & bevel gears, slow rotating worm wheel rims, parts subject to high strength requirements

GC
GZ 
G  

Continuous Casting
Centrifugal Casting
Sand Casting

Rm
Rp 0,2
A5
HB

Tensile strength in N/mm2
Yield stress in N/mm2
Elongation in %
Hardness Brinell

Range
of alloys

Moston 
designation

Chemical
Composition%

Mechanical
Properties

Properties and Uses