20Mn2B Steel Chemical Composition
20Mn2B steel is an alloy steel formulated for primary forming into wrought products. 20Mn2B is the EN numerical designation for this material. 1.0530 is the EN chemical designation. It has a fairly low base cost among wrought alloy steels in the same category. In addition, it has a moderately low embodied energy and a very low tensile strength.
The properties of 20Mn2B steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 20Mn2B steel to: wrought alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means its 50% of the highest, and so on.
Physical Properties
The physical properties of 20Mn2B steel include high strength, low weight, durability, ductility and resistance to corrosion.
Mechanical Properties
The mechanical properties of 20Mn2B steel include yield strength, tensile strength, elongation, and hardness. Yield strength is the yield limit of 20Mn2B when yielding occurs, that is, the stress resisting micro-plastic deformation. Tensile strength refers to the maximum stress that 20Mn2B material can withstand while being stretched or pulled before breaking.
Elongation is the rate at which the material will elongate when stretched or pulled. Hardness is the resistance of 20Mn2B material to localized deformation induced by either mechanical or thermal means. Again, the data to calculate these values can be found in the materials database.
Heat Treatment
This alloy is generally used in the annealed or normalized and tempered condition. Annealing offers better ductility and mechanical properties than stress relieved conditions. It is often used in applications where the parts require greater ductility with good mechanical properties. It is also used in applications where mechanical properties need to remain good under extreme temperature conditions.
Steel Alloying Elements
20Mn2B alloy is an alloy steel formulated to achieve specific mechanical properties and hardness levels. The steel alloying elements are molybdenum, chromium, manganese, silicon and nickel.
Molybdenum
Molybdenum increases the strength of the steel at high temperatures. It also helps to improve the steels resistance to corrosion and wear. It increases the strength of the steel especially at temperatures of around 150°C (302°F).
Chromium
Chromium increases the toughness of the steel and increases its ability to withstand corrosion. It also increases the amount of carbon that can be added to the steel.
Manganese
Manganese is used in the steel to increase its ductility and to help with deoxidation. It also increases the strength of the steel when it is heated and quenched.
Silicon
Silicon helps to improve the steels strength and hardness while also increasing its resistance to wear.
Nickel
Nickel helps to increase the strength and hardness of the steel. It also helps the steel to remain ductile and prevents it from becoming brittle.
Applications and Uses
20Mn2B steel is used for a variety of different applications. It is commonly used for parts in the construction industry, engineering, automotive and commercial vehicle construction, and shipbuilding. It is also used for various other applications such as crankshafts, valve train components, and carburizing gears. The steel is also used for parts in the oil and gas industry such as pipes and pipe lines, blowout preventers, riser platforms, and wellheads.
Conclusion
20Mn2B steel is a versatile alloy steel. It can be used for a variety of applications, ranging from construction to automotive and commercial vehicle construction, engineering to shipbuilding. It has good strength and hardness, and is highly resistant to corrosion and wear. It also has good ductility and toughness, making it an ideal choice for use in a variety of applications.
