EN1A Steel
Technical Data

Low carbon, free-cutting steel renowned for its excellent machinability. Ideal for high-volume, repetition turned components like nuts, bolts, and fittings.

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Chemical Composition (%)

Note: High sulfur content ensures superior free-machining characteristics.

Element Content (%)
Carbon (C) 0.07 – 0.15
Manganese (Mn) 0.80 – 1.20
Silicon (Si) 0.10 max
Sulphur (S) 0.20 – 0.30
Phosphorus (P) 0.07 max

Mechanical Properties

Typical values for cold drawn / bright bar conditions

Tensile Strength

370 – 480 MPa

Yield Stress

240 MPa (min)

Elongation

6 – 10 %

Hardness

~170 HV

Heat Treatment Guidelines

General processes for EN1A free-cutting steel

Case Hardening (Carburizing)

  • Process: Can be case hardened to improve surface wear resistance for specific components.
  • Temperature: Carburize at 900°C - 950°C.
  • Note: Not recommended for applications where the hardened case is subjected to severe shock or impact.

General Thermal Treatments

  • Annealing/Normalizing: Used primarily to relieve internal machining stresses or to refine the microstructure.
  • Tempering: Can be tempered at 180°C - 210°C after hardening to reduce brittleness.
  • Welding is generally not recommended due to the high sulfur content, which causes hot tearing (weld ripping).

Common Industrial Applications

Where EN1A's rapid machining capabilities excel

Fasteners

High-volume production of nuts, bolts, and studs via CNC or automatic lathes.

Hydraulic Fittings

Brake hose ends, low-stress fluid connectors, and machined inserts.

Precision Components

Intricate parts for textile machinery, control linkages, and light-duty axles.

Enquiry for EN1A Steel

Contact us for quotes on bright bars 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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