Range of alloys

Moston 
designation

Chemical
Composition%

Mechanical
Properties

Properties
and Uses

Cu Sn 14

M-1

Cu 84,0-86,0
Sn 13,0-15,0

GC:
Rm* 290
Rp 0,2* 150
A5* 5
HB* 95

Pinions and wear resistant parts, high pressure bushings for use with hardened steel, elevator gears, piston rings

Cu Sn 12

M-2

Cu 84,0-88,5
Sn 11,0-13,0

GC:
Rm* 280
Rp 0,2* 140
A5* 8
HB* 90

Couplings, joint parts, worm gears,helicodial gears,nuts for the leading screw

Cu Sn 12 Ni

M-2 A

Cu 84,0-87,0
Sn 11,0-13,0
Ni 1,5-2,5

GC:
Rm*  300
Rp 0,2* 170
A5* 10
HB* 90

Worm gears, worm wheels, heavyload, relatively low speed bearing sconprise gears

Cu Sn 12 Pb

M-2 B

Cu 84,0-87,0
Sn 11,0-13,0
Pb 1,0-2,0

GC:
Rm*  280
Rp 0,2* 140
A5* 7
HB* 85

Automotive synchronizer rings, industrial gears

Cu Sn 10

M-3

Cu 88,0-90,0
Sn 9,0-11,0

G:
Rm*  270
Rp 0,2* 130
A5* 18
HB* 70

Bearings, bushings, gears, pistonrings, valve components, parts incontact with sea water, pump bodies

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