Silver Steel

Kormax supply only genuine english made silver steel of the highest quality. Silver steel is a versatile high carbon tool steel that is ground to very close tolerances. It is so called because of its highly polished appearance created by the extremely fine surface finish. The high carbon content of this BS1407 Silver Steel means that it can be hardened to give considerable wear resistance and the chromium content increases strength and hardenability. It is readily machinable as supplied in the spheroidised annealed condition.

Quality All The Way
All Kormax silver steel is manufactured according to
BS1407 with the addition of 0.35% to 0.45% chromium
for uniformity of machining and consistency of
microstructure in hardening and tempering. Our silver
steel manufacturer is Europe’s largest and one of the
oldest established, with experience in tools and tool
steels dating back 200 years.

Extensive Range of Diameters
Reduces machining costs considerably. By choosing the right size for a particular job, much preliminary machining can be eliminated.

Exceptional Surface Finish
Eliminates grinding or polishing. The exceptionally high surface finish of genuine STUBS Silver Steel can be utilised without the need for further expensive grinding or polishing.

Controlled Annealing
Maximum degree of spheroidisation. Easier, more uniform machining is possible giving greatly improved machined surface.

Hardening
For maximum hardness, (66 Rockwell ‘C’ or 850 DPN), heat to 770°C – 790°C (1420°F – 1450°F). Soak till uniform then quench in clean water or preferably 10% brine solution. The most satisfactory and efficient method is to heat in a salt bath and it is advisable that the temperature should be carefully controlled. The use of a pyrometer is suggested. If a muffle furnance is used the atmosphere should be slightly reducing to minimise scaling and to avoid soft spots.

Annealing
Heat slowly to 760°C – 780°C (1400°F – 1436°F). Soak for 1 hour per inch of section and cool slowly in the furnace.