S7 Tool Steel Chemical Composition, Grades, Table and Online Pdf
S7 tool steel is a well-known and robust material distinguished for its outstanding hardness and outstanding impact resistance, as a result of which it is one of the most widely used in the industries. After carbon, the chemical composition generally includes chromium, manganese, silicon, vanadium, and small amounts of molybdenum, making it a solid candidate for the best mechanical strength. In accordance with the grading S7 tool steels characteristics, the classification is achieved by the specifying manufacturer using certain combinations of composition and heat treatment processes and has the effect of ensuring that the product is suitable for specific machine and tooling needs. In order to help both engineers and manufacturers make a correct choice of S7 grade for their applications a table being compiled to provide data on the chemical composition and mechanical properties for various S7 grades. The online sources table and chart that has more detailed information and PDFs of S7 tool steel further will make research and use of this outstanding steel easier and fun.
S7 Tool Steel Chemical Composition And Grade Table
S7 tool steel is a multifunctional material best known for its well-earned extreme toughness and high level of wear-resistance making it a favorite among various industrial applications. Generally speaking, it has high carbon concentration, chromium concentration, vanadium, and molybdenum, which point to the steel possibility. It is defined as ASTM (American Society of Mechanical Engineers) A681 Standard which corresponds to air-hardening, shock-resisting tool steel grade (S7). S7’s hardness range, 54-58 HRC, provides for machining ease and shape retention property. Its grade table is often found to be displaying its composition percentages, as well as recommended heat treatment processes, allowing for optimum long-term performance in harsh atmospheres.
| Elements | Carbon: | Chromium: | Molybdenum: | Manganese: | Vanadium: | Silicon: | Phosphorus: | Sulfur: | Iron, Fe |
|---|---|---|---|---|---|---|---|---|---|
| Min (%) | 0.45 | 3.1 | 1.3 | 0.5 | 0.2 | 0.2 | - | - | - |
| Max (%) | 0.55 | 3.4 | 1.6 | 0.7 | 0.3 | 0.4 | 0.025 max | 0.030 max | Balance |
Advantages and Disadvantages of S7 Tool Steel
Impact Resistance: Great mechanical strength and impact resistance, ideal for high-pressure applications.
Wear Resistance: Maintains hardness and abrasion resistance under high-stress conditions.
Machinability: Enables smooth cutting and precise part manufacturing.
Thermal Conductivity: Facilitates proper heat dissipation during operation.
Advantages:
Corrosion Resistance: Vulnerable to corrosion in specific environmental conditions, may require coatings or frequent maintenance.
Ductility: Lower ductility limits applications requiring complex forming and shock absorption.
Cost: Generally more expensive due to alloy composition and production requirements.
Heat Treatment Sensitivity: Requires precise heat treatment for desired mechanical properties.
Disadvantages:
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