Grade A194 Grade 7
Corresponding Standard ASTM A194/A194M-2023
Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
Classification Alloy Steel
A194 Grade 7 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.38 0.15 0.75 - - 0.8 0.15
Maximum Value 0.48 0.35 1 0.035 0.04 1.1 0.25
A194 Grade 7 Mechanical Properties
product Heat Treatment or Condition
Hardness
HBW
Finished Nuts Heat Treatment 248~327HBW
24~35HRC
Sample nut Heat Treatment ≥201HBW
≥94HRB
A194Grade7 Corresponding Standards(Same grade name, different standards)

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