5Cr8MoVSi Hot-Work/Cold-Work Mold Steel

5Cr8MoVSi is a modified variant of A8 steel under the ASTM A681 standard; it belongs to the high-carbon, high-chromium, molybdenum-vanadium alloy steel family. This steel features excellent hardenability, toughness, and dimensional stability following heat treatment, enabling it to maintain superior operational performance even in a high-hardness state.
 
Applications of 5Cr8MoVSi Material:
Used for manufacturing punches and cold forging dies with a hardness of 55–60 HRC.
Suitable for the production of non-metallic cutting tools.
Ideal for applications requiring high wear resistance and high-precision machining.
 
5Cr8MoVSi Chemical Composition (Mass Fraction, %):
Carbon (C): 0.48–0.53
Silicon (Si): 0.75–1.05
Manganese (Mn): 0.35–0.50
Phosphorus (P): ≤0.030
Sulfur (S): ≤0.015
Chromium (Cr): 8.00–9.00
Molybdenum (Mo): 1.25–1.70
Vanadium (V): 0.30–0.55
 
5Cr8MoVSi Physical and Mechanical Properties:
Density: Refer to standard steel density
Typical Hardness: HBW ≤225
Combines high toughness with excellent wear resistance
Good dimensional stability during heat treatment
Excellent hardenability; suitable for large-section workpieces
 
 
5Cr8MoVSi is a tool steel characterized by excellent hardenability, high toughness, and dimensional stability during heat treatment. It is particularly well-suited for the manufacture of high-hardness cold-work dies, punches, and cutting tools for non-metallic materials. This material demonstrates exceptional service life and reliability in high-load and high-impact environments.