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

TypeAlloyAlloy ComponentsHardness (HRC)Abrasion resistanceCorrosion resistance
KB100FeNi, C, B58 – 65xxx
KB109Fe-CrNi, Mo, Cu, C, B64 – 69xxxxxx
KB200Ni-CoCr, Mo, B48 – 56xxxxxx
KB300NiCr, Ni, Co, B, W60 – 66 (a)xxxxxxxx
KB350NiCr, Si, B, W60 – 66 (a)xxxxxxxxx
Suitability: (x good) to (xxxxx excellent).
(a) Hardness of matrix, tungsten carbides have a hardness of 89 HRC.

Base materials for liners

TypeYield point at 300°CApplication
KB25250 N/mm2Extrusion
KB37370 N/mm2Extrusion
KB63630 N/mm2Injection moulding
KB13130 N/mm2Extrusion
KB48480 N/mm2Extrusion, Injection
Other types on request