1.8159 (51CrV4) Spring Steel Strip

1.8159 (51CrV4) spring steel strip has good elasticity and fatigue resistance when quenched and tempered. It has high hardenability, and the addition of vanadium helps to refine the steel’s grain, reduce overheating sensitivity, and improve strength and toughness.

This alloy construction steel is ideal for parts exposed to stress and shock, such as crankshafts and steering knuckles. It is also suitable for quality wrenches and cradles.

Strength

This chromium-vanadium alloy steel is often used in springs and high-stress components, such as the retractor springs of automobile seat belt systems. Its elasticity is critical to the functionality of these dynamically loaded parts, allowing them to absorb and re-exert loads without permanently deforming. The tensile strength and yield strength of 51CrV4 allow it to withstand heavy loads, making it an ideal material for springs that need to withstand significant forces over long periods.

DIN 1.8159, also known by the standards and names 51CrV4, 50CrVA, CSN 15261 and 58CV4 is an impressively strong material that offers an ideal balance of strength, toughness and resistance to fatigue. The high yield and tensile strengths of the alloy make it resistant to plastic deformation under cyclic 51CrV4 spring steel strip stress, minimizing wear and tear. This makes the material a reliable choice for manufacturing and maintaining industrial machinery, household appliances and more.

Despite its remarkable strength, 51CrV4 is easy to work with, allowing it to be formed and bent into complex shapes without damaging the integrity of the metal. It is also relatively easy to weld, making it a popular choice for producing parts like car suspension springs. When properly heat treated, it has excellent ductility and resilience, enabling the production of springs with a smooth surface. For the best results, it is recommended to temper the steel immediately after quenching whilst tools are still hand warm.

Toughness

51CrV4 steel is a quenched and tempered alloy construction grade used to manufacture springs and spring components. Its high strength allows it to withstand large stresses and strains. In addition to its high strength, it has excellent toughness and resistance to fatigue.

This alloy is available in a range of forms, including hot-rolled bars, drawn bars, wires and spring strips. It also comes in a range of sizes, from 8mm up to 250mm in diameter. The grade is suitable for use in a wide variety of applications, from automotive and aerospace to engineering and manufacturing industries.

The alloy is made from a combination of carbon and chromium-vanadium, which helps to improve its hardenability and processing properties. The added vanadium refines the grain structure, reduces overheating sensitivity and enhances strength and toughness. It is commonly used in automobiles and machinery for axles, crankshafts, knuckles, connecting rods and large plate springs.

1.8159 is easy to work, with good cold forming and bending capabilities. It can be welded, but with precautions due to its high chromium content. Preheating and post-weld heat treatment are recommended to ensure optimum results. This grade should be quenched in oil or water for maximum durability. It should Tinplate Steel Coil / Sheet be tempered immediately after quenching whilst tools are still hand warm, re-heating to the tempering temperature and soaking for one hour per 25 millimetre of total thickness (2 hours minimum). Cooling must be done in air.

Corrosion Resistance

In the world of materials, DIN 1.8159 (commonly referred to as 51CrV4 or AISI 6150) stands out for its unique combination of qualities. It is a chromium-vanadium alloy steel that is incredibly strong and durable, while also being capable of taking on a great deal of stress without losing its shape.

This material is known to have excellent corrosion resistance, especially in its hardened and tempered condition. It is also easy to weld, though special care must be taken because it can be prone to corrosion pitting. Nevertheless, it is important to note that this material will require preheating and post-weld heat treatment to ensure the integrity of its mechanical properties.

To test the corrosion resistance of this particular alloy, Ventura Alloy and Steel arranged for several disc springs to be exposed in an outdoor courtyard for 21 months. The results were remarkable, with the disc springs showing very little signs of wear and tear in their entirety. The reason for this is that the material is extremely tough and resistant to impact. This quality makes it a suitable material for the manufacture of high-quality wrenches and cradles. It is also an ideal choice for a wide range of other applications that will be subject to high loads and stress, such as camshafts, racks, pinions and gears.

Maintenance

This type of steel is often used for automobile suspensions because it can withstand heavy loads and shocks. It also has a high yield strength, so it is less likely to deform under stress. Additionally, this type of steel is easier to weld than other types of metals. It is suitable for a wide range of applications, including camshafts, racks, and pinions. In addition, it can be rolled to create quality wrenches and scissors.

The chromium-vanadium alloyed 51CrV4 spring steel is also commonly found in industrial machinery components. It is particularly useful for springs in road and rail freight vehicles because it can withstand both dynamic and fatigue loading. It is a low-cost, reliable material that can be forged to form intricate shapes and sizes.

To improve the fatigue resistance of this steel, boron, niobium, and molybdenum are added to it. This helps to refine the grain structure, reduce overheating sensitivity, and increase strength and toughness. However, this alloy should be carefully controlled to ensure that the amount of non-metallic inclusions is within a safe range.

In order to obtain the best performance from this material, it must be hardened with a good heat treatment process. The hardenability is very high, and its hot working performance, comprehensive mechanical properties, and decarburization resistance are also good. It can be used to make important large springs with a large section, such as steam turbine main steam valve spring, gland spring, boiler safety valve spring, and 400t boiler disc valve spring.