EN8 Steel

EN8 steel is a widely used medium-carbon, unalloyed engineering steel known for its excellent balance of strength, toughness, and machinability. It is commonly utilized in general engineering applications where higher strength than mild steel is required, but without the additional cost of alloy steels such as EN19 or EN24. Due to its versatility and cost-effectiveness, EN8 remains a preferred choice across various industries.

Typically supplied in the normalized condition, EN8 offers good mechanical properties and can be further enhanced through heat treatment processes such as hardening and tempering. It can achieve hardness levels of 45–50 HRC, and even higher surface hardness (up to 55–60 HRC) through flame or induction hardening. This makes it suitable for components that require a wear-resistant surface combined with a tough core.

Tool Steel

EN8 also provides good machinability, allowing efficient manufacturing through turning, milling, drilling, and threading operations. While it is weldable, precautions such as preheating and post-weld stress relief are recommended due to its medium carbon content.

Thanks to its reliability, strength, and affordability, EN8 steel is extensively used in automotive, manufacturing, and heavy machinery sectors. It is ideal for producing shafts, gears, fasteners, and other mechanical components subjected to moderate stress and wear conditions.

Key Properties

  • Medium Strength & Toughness: Offers higher strength than mild steel, suitable for medium-duty engineering components.
  • Good Machinability: Easily machinable in normalized or annealed condition, enabling efficient production.
  • Heat Treatable: Can be hardened and tempered (45–50 HRC) or surface hardened up to 55–60 HRC for improved wear resistance.
  • Good Weldability (With Precautions): Weldable with preheating and stress relieving due to medium carbon content.
  • Moderate Wear Resistance: Suitable for components exposed to friction and medium wear conditions.
  • Cost-Effective: Provides a good balance of performance and affordability compared to alloy steels.

Common Applications

  • Transmission shafts and axle shafts
  • Gears, sprockets, and pinions
  • Bolts, studs, and fasteners
  • Connecting rods
  • Machine tool spindles
  • Crankshafts and camshafts
  • Keys, hubs, and couplings
  • Hand tools and automotive components
  • Rollers, pins, and general machinery parts

PUROHIT STEEL is a trusted name in the tool steel industry, with humble beginnings dating back to 1965 and over three decades of expertise in delivering high-quality materials and solutions. Today, the group operates multiple well-established units, maintaining a vast inventory ranging from hot work and cold work tool steels to specialized materials. Known for reliability and strong technical support, PUROHIT STEEL caters to the diverse requirements of small, medium, and large-scale industries. The company specializes in manufacturing moulds and tooling components using premium grades such as Grade O2/ 1.2842 which is ideal for applications including injection moulds (medium to large size), blow moulds, low-pressure die-casting dies, automotive moulds, tooling plates, extrusion dies, machine parts, shafts, and general tooling components. With a focus on quality, performance, and precision, PUROHIT STEEL continues to deliver durable and efficient tooling solutions.