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Home Material GB /T 1299-2014
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Grade 3Cr17Mo
China ISC T25303
Corresponding Standard GB /T 1299-2014
Tool and Mould Steels
Classification Tool Steel
3Cr17Mo Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.33 - - - - 15.5 - 0.8
Maximum Value 0.45 1 1.5 0.03 0.03 17.5 1 1.3
3Cr17Mo Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Delivery condition Annealing ≤285
Delivery condition Pre-Hard HRC
33~38
sample Quenching HRC
≥46
New and Old Grade Replacement List
Corresponding Standard Grade
GB /T 1299-2014
Grade
China ISC
GB /T 1299-2025
Grade
China ISC
1 Approximate Comparison Table Plastic Mold Steel
China United States International Organization for Standardization Germany
YB GB ISC ASTM/AISI ISO DIN EN/DIN W-Nr.
SM3Cr2Mo 3Cr2Mo T25303 P20 35CrMo2 40CrMnMo 7 1.2311
2 Approximate Comparison Table Plastic Mold Steel
China Japan United States International Organization for Standardization Germany Sweden
GB JIS ASTM ISO DIN EN/DIN W-Nr. SS
3Cr17Mo SUS 434 440 X38CrMo16 X6CrMo 17-1 1.4113 2325
3Cr17Mo Corresponding Standards(Same grade name, different standards)
1 GB /T 1299-2014
3Cr17Mo T25303
2 GB /T 1299-2025
3Cr17Mo T23910

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