EN47 Spring Steel

The EN47 spring steel is a high-carbon, cold-drawn, and oil-hardened steel widely used to manufacture springs and spring components. As a result of its strength, toughness, and durability, it is suitable for demanding applications involving heavy loads and repeated stress.

BS970 specifications refer to 50CrV4 and 51CrV4 steel. “EN47” indicates that it meets the European standard for spring steel—carbon-enhanced steel’s hardenability, strength, and toughness with small amounts of chromium and vanadium.

The high tensile strength of EN47 spring steel is one of its fundamental properties. As a result, it maintains its shape and performs reliably in various spring applications despite heavy loads. Moreover, the steel has good toughness, which allows it to absorb energy and resist fracture even under dynamic conditions.

EN47 spring steel is cold-drawn and oil-hardened to achieve the desired mechanical properties. During the cold-drawing process, steel is pulled through a die at room temperature, improving dimensional accuracy, surface finish, and strength. Cold-drawn steel undergoes an oil-hardening treatment, which involves heating it to a specific temperature and then quenching it in oil. Steel gains hardness and strength while maintaining its toughness through this process.

Due to its high strength, toughness, and hardness, EN47 spring steel is suitable for a wide range of spring applications. It is used to manufacture helical and flat springs, suspension springs, valve springs, clutch springs, and other mechanical springs. Even in high-stress environments, its excellent fatigue resistance ensures long-lasting performance.

Heat treatment can further enhance the mechanical properties of EN47 spring steel. Tempering and annealing can achieve specific hardness levels and desired spring characteristics. Following oil quenching, the steel is reheated to a lower temperature, followed by controlled cooling, to reduce internal stresses and improve toughness. The annealing process involves heating steel to a specific temperature and cooling it slowly to relieve stress and improve machinability.

EN47 spring steel is a high-carbon, cold-drawn, and oil-hardened steel known for its strength, toughness, and durability. Spring components and springs are widely used in various industrial applications. EN47 spring steel offers excellent mechanical properties and can withstand heavy loads and repeated stress.

Grade Introduction:

En47 Spring Steel is supplied in rolled form. Oil hardening and tempering are suitable for En47 spring steel. En47 spring steel in oil-hardened and tempered condition provides good wear and abrasion resistance. The alloy spring steel EN47 offers excellent toughness and shock resistance when hardened.

 We have added EN47 Spring Steel Round Bar to our range of spring steel bars. It is mainly used for tractors, heavy vehicles, larger plate springs, industrial production loads, and helical springs. It is also widely used in many general engineering applications. The hardened EN47 bar provides excellent shock resistance and toughness, making it an ideal alloy spring for parts exposed to shock, stress, and vibration.

In Addition To Other Grades:

MS, EN1a, EN3b, EN8, EN8d, EN9, EN19, EN24, EN31, EN32b, EN36c, EN41b, EN43b, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, 2714, SKD-11, P20, P20+s, P20+Ni, SCM 420, ASTM Sa-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.

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