4145 alloy round bar
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ASTM 4137 Steel Round Bar
FORGING AISI 4137 grade alloy steel is forged at a temperature of around 2200ºF (1205ºC) and could be forged down to a temperature of approximately 1700ºF (925ºC). The alloy may be slow cooled after forging or transferred to a furnace held at what may be the finish forging temperature. Such a treatment would in fact amount to a type of annealing treatment.
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