Characteristics and Functions of Shock Resistant Tool SteelSeptember 8, 2022
Shock-resistant steels are a subset of tool steels with extremely high impact toughness, poor abrasion resistance, and the ability to achieve reasonably high hardness (HRC 58/60). According to the AISI categorisation system, shock-resistant steels are classified as Group S. Chromium-tungsten, silicon-molybdenum, and silicon-manganese alloying give great shock resistance and hardenability. Manganese, silicon, chromium, tungsten, and molybdenum are the main alloying elements of shock-resistant steels, commonly known as group S steels. For the appropriate hardness, low carbon content is required (approximately 0.5 per cent carbon). Steels of types S1, S5, and S6 are oil quenched, whereas steels of type S2 are water quenched. Group S steels are typically utilised for chisels, rivet sets, punches, springs, forging dies and punches, and other applications requiring great toughness and shock resistance.
Shock-resisting Steel Properties
The qualities of the material are said to be intense, which indicates that they are not reliant on the total mass quantity and can change from one location to another within the system at any given time. The study of the structures of materials and the relationships between those structures and the qualities of those materials is the fundamental activity of materials science (mechanical, electrical etc.). After materials scientists have understood the structure-property connection, they are in a position to investigate the relative effectiveness of material when applied to a certain setting. The chemical elements that make up material and how it was transformed into its final form are the primary factors that determine the structure of a material and, by extension, its attributes.
Shock-resisting Steel Mechanical Properties
Materials are regularly selected for various applications because they possess desired combinations of mechanical qualities. For structural applications, material qualities are extremely important, and engineers are required to consider them.
Steel’s Shock-Resistant Strength
According to the theory of the mechanics of materials, the capacity of a material to sustain an applied force without breaking down or undergoing plastic deformation is what constitutes its strength. The concept of material strength considers the connection between the external loads placed on a material and the subsequent deformation or change in dimensions that the material experiences. The ability of a material to bear an applied load without giving way or undergoing plastic deformation is what we mean when we talk about the material’s strength.
Shock-Resistant Steel Yield Strength
The yield strength of shock-resistant steel—AISI S5—varies depending on the heat treatment procedure, although it is typically in the range of 1500 MPa. The yield point is the point on a stress-strain curve that shows the limit of elastic behaviour and the beginning of the plastic activity. This point is sometimes referred to as the transition point. Yield strength, also known as yield stress, is a material property defined as the stress at which a material begins to deform plastically. On the other hand, the yield point is the point at which nonlinear (elastic and plastic) deformation begins. Before reaching its yield point, the material will deform elastically, meaning that it will change shape but then go back to its previous form once the applied stress is released. After the yield point has been exceeded, some portion of the deformation will be irreversible and permanent. The phrase “yield point phenomena” refers to a behaviour that may be seen in some steels and other materials. The yield strength of low-strength aluminium can be as low as 35 MPa, whereas the yield strength of very high-strength steel can be higher than 1400 MPa.
Use punches and dies constructed from shock-resistant tool steels to get the best results. Contact Gunna Engineering if you need punches and dies made from shock-resistant tool steels. Our company has been making punches, dies, and blades for a wide range of businesses for over 25 years.
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