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Home Material GB /T 1299-2025
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Grade 3Cr17Mo
China ISC T23910
Corresponding Standard GB /T 1299-2025
Tool and Mould Steels
Classification Tool Steel
Properties Corrosion Resistance
3Cr17Mo Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.33 - - - - 15.5 - - 0.8
Maximum Value 0.45 1 1.5 0.025 0.02 17.5 1 0.25 1.3
• Smelting method: Vacuum degassing
3Cr17Mo Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
condition of delivery Annealing ≤285
condition of delivery Pre-hardening HRC: 33~38
Specimen Quenching at 1000-1040°C, oil cooling 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
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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