A method for determining the hardenability of steel. The Jominy
test is covered by BS 4437:1987. A standard test piece 25mm x
100mm is heated to a pre-determined temperature and
quenched by a jet of water sprayed onto one end. When the
specimen is cold, hardness measurements are made at intervals
along the test piece from the quenched end and the results are
plotted on a standard chart from which is derived the
hardenability curve. BS 970 contains hardenability curves for
many of the steels in the Standard. Properly carried out, this
test will illustrate the effect of mass upon a chosen steel when
heat treated and indicate if the steel is of a shallow, medium or
deep hardening type.
Пpодаём базы данных по чёpным/цветным металлам
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