Tool steel round steel

1. American Standard (ASTM):

- L3 Tool Steel:

- Chemical Composition: Carbon (C): 0.95 - 1.10%; Silicon (Si): 0.10 - 0.50%; Phosphorus (P): ≤0.03%; Sulfur (S): ≤0.03%; Manganese (Mn): 0.25 - 0.80%; Chromium (Cr): 1.30 - 1.70%; Vanadium (V): 0.10 - 0.30%; Nickel + Copper (Ni + Cu): ≤0.75%.

- Performance: It has good hardness and wear resistance, and is suitable for making tools and molds that require certain strength and wear resistance.

- Usage: Commonly used in the manufacturing of cutting tools, punches, and some medium-load molds.

- S7 Tool Steel:

- Chemical Composition: Carbon (C): 0.45 - 0.55%; Silicon (Si): 0.20 - 1.00%; Manganese (Mn): 0.2 - 0.9%; Phosphorus (P): <0.030%; Sulfur (S): <0.030%; Chromium (Cr): 3.00 - 3.50%; Molybdenum (Mo): 1.30 - 1.80%; Vanadium (V): <0.35%.

- Performance: It is characterized by high impact toughness, good wear resistance, and is easy to process and heat treat.

- Usage: Suitable for making tools such as punches, forging dies, hammers, chisels, and fixture molds. It is also applicable to hot and cold work impact tools and plastic molds.

- 4320H Tool Steel:

- Chemical Composition: It contains appropriate proportions of carbon, chromium, nickel, molybdenum, and other elements to ensure its performance. The specific composition may vary slightly depending on different manufacturers and standards.

- Performance: It has high strength, good toughness, excellent wear resistance, and good welding performance. It also has a relatively long service life.

- Usage: Widely used in large equipment installation in industries such as thermal power stations, hydropower stations, and bridge construction.

2. European Standard (EN):

- 35CrMo7 Tool Steel:

- Chemical Composition: Carbon (C): about 0.35%; Silicon (Si): within a certain range; Manganese (Mn): also within a specific range; Chromium (Cr): about 1.8%; Molybdenum (Mo): about 0.7% (specific values may vary slightly).

- Performance: It has good hardenability, high strength, and certain toughness, and can maintain good mechanical properties after heat treatment.

- Usage: Used in the manufacturing of mechanical parts, gears, shafts, and some high-load molds in the mechanical manufacturing industry.

- 16Mo3 Tool Steel:

- Chemical Composition: The carbon content is approximately 0.16%, and the molybdenum content is in the range of 0.25% - 0.35%.

- Performance: It has good weldability and is suitable for use in high-temperature working environments. It is widely used in the manufacturing of industrial boilers and stainless steel pressure vessels in the petroleum, natural gas, and chemical industries.

3. German Standard (DIN):

- 40CrMnNiMo8-6-4 Tool Steel:

- Chemical Composition: Carbon (C): 0.35 - 0.45%; Silicon (Si): 0.2 - 0.4%; Manganese (Mn): 1.3 - 1.6%; Nickel (Ni): 0.9 - 1.2%; Phosphorus (P): max 0.03%; Sulfur (S): max 0.03%; Chromium (Cr): 1.8 - 2.1%; Molybdenum (Mo): 0.15 - 0.25%.

- Performance: It has good machinability, suitable for texturing and fine polishing, has sufficient corrosion resistance, and is a vacuum degassed steel.

- Usage: Specifically used for injection molds.

- 50WCrV8 Tool Steel:

- Chemical Composition: Carbon (C): 0.45 - 0.55%; Silicon (Si): 0.70 - 1.00%; Manganese (Mn): 0.15 - 0.45%; Phosphorus (P): ≤0.03%; Sulfur (S): ≤0.03%; Chromium (Cr): 0.90 - 1.20%; Vanadium (V): 0.10 - 0.20%; Tungsten (W): 1.70 - 2.20%.

- Performance: It has good wear resistance and toughness, and is suitable for making tools and parts that require high strength and wear resistance.

- Usage: Used in the manufacturing of cutting tools, springs, and some high-load mechanical parts.

4. Russian Standard (GOST):

- Russian tool steels also have their own series of standards and grades, such as certain grades of high-speed tool steels and alloy tool steels. However, specific information may require further reference to relevant Russian standard materials or industry-specific data. Due to the limited information available in a general context, it is not possible to provide a detailed introduction for each specific Russian tool steel grade here. It should be noted that the above is only a brief introduction to some common tool steel round bars in different standards. The actual performance and usage of each grade of tool steel may vary depending on specific manufacturing processes, heat treatment methods, and application requirements.

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