Material Mastery By Temperature Control

The Urge to Substitution and the Use of Nominally Lower-alloyed Steels has - Prompted Full Advantage to be Taken of Control of Physical Properties by Specialized Heat-treatment......

Expediting The Refacing Of Engine Valves

r r HE use of portable, electric, hand tools was gradfally 1 increasing in popularity before the war, and there is no question that during the war enormous strides have been......