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DIN 42CrMo4

AISI 4140

Fe 96.785 - 97.77 Si 0.15 - 0.30MN 0.75 - 1.0S 0.040P 0.035 Cr 0.80 - 1.10 C 0.380 - 0.430 Mo 0.15 - 0.25
Virat Special Steels 4140 Steel

Virat Special Steels is the biggest Supplier & Stockiest of 4140 Steel in India.
4140 Steel is a 1% chromium - molybdenum medium harden capability basic cause excessive tensile metal Its pre hardened and tempered & can be extra surface hardened by flame or induction hardening and by means of nitriding.

Steel Properties

4140 is a 1% chromium - molybdenum medium hardenability general purpose high tensile steel - usually provided hardened and tempered in the tensile range of 850 - 1000 Mpa (condition).4140 is currently out there with improved machinability, that greatly increases feeds or speeds, while also extending tool life while not adversely affecting mechanical properties.

Physical Properties
Thermal Conductivity at °C 20 350 700
W/(m*K) 42.0 42.2 42.4

This alloy finds many applications as forgings for the aerospace and oil and gas industries, along with myriad uses in the automotive, agricultural and defense industries, typical uses are forged gears and shafts, spindles, fixtures, jigs and collars.

Heat Treatment
Soft annealing °C Cooling Hardness HB
680-720 Furnace max. 241
Stress-relief annealing °C Cooling
550-600 Furnace