AISI 4340
AISI 4340 steel round bar


AISI 4340 steel is a low alloy steel which contains at least 0.7 Cr%, 1.65 Ni%, and 0.2% Mo as strengthening alloy elements as per ASTM A29.As a heat treatable steel,AISI 4340 has a very good balance of strength, toughness and wear-resistance,and can attain high strength while retaining good fatigue strength which makes it ideal for all highly stressed parts in the most severe conditions.It may be used in both high a
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