EN8 Steel
Technical Data

Medium carbon steel grade with good tensile strength and wear resistance. Widely used for shafts, studs, bolts, gears and engineering components.

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Chemical Composition (%)

Element Content (%)
Carbon (C) 0.42 – 0.50
Silicon (Si) 0.10 – 0.40
Manganese (Mn) 0.50 – 0.80
Phosphorus (P) 0.045 max
Sulphur (S) 0.045 max

Mechanical Properties

Key mechanical characteristics of EN8 steel

Tensile Strength

600 – 800 MPa

Yield Strength

355 MPa (min)

Elongation

16 %

Hardness

197 – 241 HB

Heat Treatment & Tempering

General guidelines for forging and heat treatment processes

Forging & Annealing

  • Forging: Heat slowly to 1050°C - 1100°C. Do not forge below 850°C. Cool slowly in ash or sand after forging.
  • Annealing: Heat to 800°C - 840°C, allow to soak thoroughly. Cool naturally in the furnace.
  • Normalizing: Heat to 830°C - 860°C and cool in still air.

Hardening & Tempering

  • Hardening: Heat uniformly to 830°C - 860°C until heated through. Quench in water or oil.
  • Tempering: Heat to 550°C - 660°C depending on the required properties. Cool in still air.
  • Avoid tempering in the lower ranges if maximum impact strength is critical.

General Purpose Usecases

Common industrial applications for EN8 medium carbon steel

Gears & Pinions

Medium strength gears requiring good wear resistance.

Machinery Shafts

Transmission shafts, axles, and spindles for industrial machinery.

Bolts & Studs

High strength fasteners, studs, and bolts for structural applications.

Enquiry for EN8 Steel

Contact us for quotes and stock availability.

Our Address

1B-225 B.P. NIT Faridabad, Haryana, India - 121001

Phone Number

+91 9818700080

Email Address

praveensteel@gmail.com

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