Sudanese iron spear, 1930s, made and used by the Jur tribe of Sudan

Made:
1930-1938 in Sudan
maker:
Jur people

Selection of eight Iron hunting spears, two without shafts, made and used by the Jur tribe of Sudan, c.1930s.

Around 1000BC it was discovered that iron with a small amount of carbon could be hardened by quenching in water after heating.This was followed by a reheating process called tempering.However it was not until Henry Sorby (1826-1908) developed the metallographic technique for observing the microstructures of metals and alloys under the microscope, and also theories of thermodynamics were developed, which provided a scientific basis for the study of alloying, that the effects of carbon in steel were appreciated.The effects of quenching and tempering could also be explained.

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Details

Category:
Metallurgy
Object Number:
1932-439
type:
iron
credit:
Sudan Government
status:
Permanent collection

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