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Contact SupplierWe are offering steel round bar
•4140/1.7225 alloy steel is a chromium/molybdenum medium-carbon steel.
•4140/1.7225 alloy steeloffers medium to high hardenability and good fatigue properties.
•4140/1.7225 alloy steel has a machinability rating of 50% to 55% of a 1212 carbon steel.
•4140/1.7225 alloy steelis sold in the annealed condition. Typical annealed hardness is bhn 217/229 rc 17/18. Or in the pre-hardened condition bhn 262/321 rc 26.6/34.3 with a higher surface hardness and lower center hardness.
•4140/1.7225 alloy steelis capable of meeting astm-a322.
•typical applications:
base plates
tool holders
molds
support plates
fixtures
punch holders
•chemical composition:
carbon: 0.38~0.45%
silicon: 0.17~0.37%
manganese: 0.50~0.80%
chromium: 0.90~1.20%
molybdenum: 0.15~0.25%