cylinders-7MAXI MELT invested in metallurgical research and this allowed us to offer an exclusive range of bimetallic alloys that solve wear problems. The bimetallic alloys are produced in modern sophisticated centrifugal casting facilities.

CylindersThe advantage of our bimetallic alloys is the high and homogeneous hardness throughout the whole layer thickness which ranges from 1.5 to 2 mm thickness. The lifetime increase of the bimetallic cylinder against a nitrided cylinder may exceed 12 times or more. The price-quality-lifetime ratio is therefore very beneficial for the bimetallic cylinder.

We have five different alloy solutions listed in the table below. We qualified the quality of the different alloys according abrasion and or corrosion resistance to enable a quick selection.

Bimetallic Alloys

Type Alloy Alloy Components Hardness (HRC) Abrasion resistance Corrosion resistance
KB100 Fe Ni, C, B 58 – 65 xx x
KB109 Fe-Cr Ni, Mo, Cu, C, B 64 – 69 xxx xxx
KB200 Ni-Co Cr, Mo, B 48 – 56 x xxxxx
KB300 Ni Cr, Ni, Co, B, W 60 – 66 (a) xxxx xxxx
KB350 Ni Cr, Si, B, W 60 – 66 (a) xxxxx xxxx
Suitability: (x good) to (xxxxx excellent).
(a) Hardness of matrix, tungsten carbides have a hardness of 89 HRC.

Base materials for liners

Type Yield point at 300°C Application
KB25 250 N/mm2 Extrusion
KB37 370 N/mm2 Extrusion
KB63 630 N/mm2 Injection moulding
KB13 130 N/mm2 Extrusion
KB48 480 N/mm2 Extrusion, Injection
Other types on request