H13 Tool Steel Chemical Composition & Properties, Grades, Charts and Online Pdf

H13 tool steel is a multi-purpose material which is coveted by the manufacturing industries because of its outstanding desirable attributes of hardness, toughness, heat resistance and wear resistance. Its chemical compound often comes with 0.40% carbon, 1.00% chromium, 5.25% molybdenum, 1.35% vanadium, and some elusive elements such as silicon, manganese, and sulfur in additions. This alloying provides the metal with impromptu features like high hardness, good thermal conductivity and thermal deformation infancy. H13 assorted the grades for particular purposes which have the specified characteristics with respectively heat treatments. The table, charts and online resources give detailed information about the steel's composition, properties, and heat treatment processes as well as application procedures which can help the engineer and the manufacturers to use it efficiently.

H13 Tool Steel Chemical Composition And Grade Table

H13 tool steel is a highly versatile material utilized not only in manufacturing processes but also known for its excellent combination of properties. Its chemical contents are carbon (0.32-0.45%), manganese (0.40-1.00%), vanadium (0.80-1.20%), molybdenum (4.75-5.50%), silicon (1.10-1.75%), phosphorus and sulfur. It could be classified as per the AISA/SAE structure with grade H13. This steel grade possesses an impressive level of toughness, wear-resistance, as well as heat-resistance, which renders it very suitable for the manufacturing process such as forging, extrusion, plastic mould tools, and hot forging tooling.

H13 Tool Steel Composition Table
Elements Chromium, Cr Molybdenum, Mo Silicon, Si Vanadium, V Carbon, C Manganese, Mn Phosphorus, P Sulfur, S Nickel, Ni Copper, Cu Iron, Fe
Min (%) 4.75 1.1 0.8 0.8 0.32 0.2 - - - - -
Max (%) 5.5 1.75 1.2 1.2 0.45 0.5 0.03 0.03 0.3 0.25 Balance

Advantages and Disadvantages of H13 Tool Steel


  • Excellent Hot Hardness: Maintains hardness and strength at elevated temperatures.

  • Good Toughness: Provides adequate resistance against chipping and cracking under impact.

  • Versatile: Suitable for forging, die casting, and various tooling operations.

  • Good Machinability: Can be machined with relative ease compared to other high-alloy steels.


  • Prone to Decarburization: Requires protection during heat treatment to prevent surface oxidation.

  • High Working Temperatures: Tools may require more frequent reconditioning at high operating temperatures.

  • Expensive: Higher cost compared to lower alloy steels due to alloying components.

  • Complex Heat Treatment: Requires meticulous attention to detail and significant experience.

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