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H13 Steel: Chemical Composition, Mechanical Properties, and Main Applications
H13 is a type of hot work die steel that belongs to the category of alloy tool steels. It is created by adding various alloying elements to carbon steel, enhancing its performance for high-temperature applications. The term "joint steel" refers to a group of specialized steels used in different industrial tools and molds. This group includes measuring tool steels, impact-resistant tool steels, cold work die steels, hot work die steels, non-magnetic die steels, and plastic die steels.
H13 is specifically classified as a hot work die steel, following the Chinese standard GB/T 1299-2000. Its unified digital code is A20502, and it is also known as 4Cr5MoSiV1. This steel is widely used in the manufacturing of molds and dies due to its excellent thermal stability and mechanical strength.
Chemical composition (in percentage):
- Carbon (C): 0.32–0.45
- Silicon (Si): 0.80–1.20
- Manganese (Mn): 0.20–0.50
- Chromium (Cr): 4.75–5.50
- Molybdenum (Mo): 1.10–1.75
- Vanadium (V): 0.80–1.20
- Phosphorus (P): ≤0.030
- Sulfur (S): ≤0.030
Heat treatment process:
- Delivery condition: Brinell hardness HBW10/3000 ≤ 235
- Quenching: Preheat at 790°C ±15°C, then heat to 1000°C (salt bath) or 1010°C (furnace atmosphere), hold for 5–15 minutes, air cool.
- Tempering: At 550°C ±6°C.
- Annealing and hot working are also commonly applied.
H13 is a high-performance hot work die steel developed in the United States, known for its air hardening properties. Its performance and applications are similar to those of 4Cr5MoSiV steel. However, due to its higher vanadium content, H13 exhibits better high-temperature strength and toughness, especially at 600°C. This makes it an ideal choice for hot forging, die casting, and other high-temperature forming processes.
H13 steel is one of the most popular grades in the field of hot work die steels, valued for its durability, wear resistance, and ability to maintain shape under extreme conditions. Whether used in the automotive, aerospace, or general manufacturing industries, H13 offers reliable performance and long service life.
Editor: Hardware Business Network Information Center
Source: http://news.chinawj.com.cn
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