Grade 5Cr8MoVSi
China ISC T21355
Corresponding Standard GB /T 1299-2014
Tool and Mould Steels
Classification Tool Steel
5Cr8MoVSi Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo V
Minimum Value 0.48 0.75 0.35 - - 8 1.25 0.3
Maximum Value 0.53 1.05 0.5 0.03 0.015 9 1.7 0.55
5Cr8MoVSi Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤229
sample Quenching HRC
≥59
New and Old Grade Replacement List
Corresponding Standard Grade
GB /T 1299-2014
Grade
China ISC
GB /T 1299-2025
Grade
China ISC
5Cr8MoVSi Corresponding Standards(Same grade name, different standards)

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