Grade SUJ4
Corresponding Standard JIS G 4805-2019
High Carbon Chromium Bearing Steels
Classification Alloy Steel
Properties Hardness
SUJ4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.95 0.15 - - - 1.3 - - 0.1
Maximum Value 1.1 0.35 0.5 0.025 0.025 1.6 0.25 0.25 0.25
SUJ4 Mechanical Properties
Heat Treatment or Condition
Hardness
HBW
Spheroidizing Annealing ≥201
New and Old Grade Replacement List
Corresponding Standard Grade
JIS G 4805-2008
Grade
JIS G 4805-2019
Grade
SUJ4 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!