Steel alloys containing more than 11%
chromium produce a protective, sustainable surface scale when exposed to
high temperatures in oxidising atmospheres up to 1100°C. When nickel
and carbon are added to these alloys, a series of heat resisting alloys is
produced to perform in an array of high temperature (up to 200°C)
applications with wear. Where high impact is experienced Ni-hard cannot be
used so a cost effective solution is 11-16 % chrome steel casting if
required Mo & V can be used to increase wear resistance.
Increased nickel content progressively stabilises austenite in heat
resisting steels, from a duplex structure especially designed for sulfurous
environments, through alloys with measured ferrite/austenite ratios, to
fully austenitic alloys. By adjusting nickel, chromium and carbon content
and including additions of rare earth elements, Molybdenum and Vanadium,
plating can be manufactured to withstand high temperature thermal cycling,
carburising and high load environments.
In more severe applications, a series of grades with substantially
increased nickel contents are used . Generally, these super alloys contain
additions of one or a combination of Rare Earths, niobium, tungsten and
cobalt. This produces an alloy that is able to absorb considerable amounts
of carbon over long periods without significant embitterment.
We can provide castings as per customer requirements in various grades,
shapes and weight varying from 1 Kg. to 1000 Kg. per piece. We have mastered
Ni - Hard castings for various liners, bends and pump internals.
Ni - Hard is an extremely wear resistant material and in cast form is ideal
for use with abrasive products, giving a much more extended life when
compared with cast iron or mild steel when incorporated in pneumatic
conveying systems.
We can provide castings /plating in carbon steel to cast iron, chrome steel
to mangenese steel to stainless steel. We boast of our quality, delivery and
after sales service to our customers' utmost satisfaction.