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Martensite in AISI 4140 steel
Martensite in AISI 4140 steel
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The steel cable of a colliery winding tower
The steel cable of a colliery winding tower
An incandescent steel workpiece in a blacksmith's art
An incandescent steel workpiece in a blacksmith's art
Iron ore pellets used in the production of steel
Iron ore pellets used in the production of steel
A Bessemer converter in Sheffield, England
A Bessemer converter in Sheffield, England