Speciality Steel Bar

Usha Martin’s integrated steel plant near Jamshedpur has one million tonne capacity and is one of the India’s largest speciality steel plant in long product segment.

The speciality steel bars from Usha Martin find application in Automobiles, Heavy Earth Moving Equipments, Tractors, Railways, Aluminium Industry, and Oil & Gas Sector. Some of the components for which we supply steel are:

  • Crank shaft, connecting rod, transmission gears, crown wheel & pinion, front axle beams, rear axle shaft, steering knuckle, hubs(front/rear), spindle, and spring steel flats in automotive sector
  • Piston rods & pins for heavy earth moving equipment
  • Coil springs for Railways
  • Cathode and anode bars for aluminium industry
  • Flanges, gear, and shafts  for oil & gas sector
  • Ball bearings


Some typical steel grades manufactured by Usha Martin are as under:
–          Crank shaft (40Cr4C, 42CrMo4, 38MnSiVS5, 39Cr5, SAE1541B, 55C8, SMn443H, etc)
–          Connecting Rod (C70S6, S48C  etc.)
–          Front Axle beam (40Cr4, 41Cr4, SAE 4135, S58C etc.)
–          Stub Axle/steering knuckle(SAE1541, 40Cr4, SAE4135 etc.)
–          Rear Axle shafts (EN15A, SAE1541, SAE15B41H, SAE1547RH, 40Cr4B/C etc.)
–          Crown wheel / Pinion(SAE 8822, SAE815M17, 20MnCr5, 94B17, SAE4317HM2 etc.) and
–          Transmission gears (20MnCr5, SAE8620, 815M17 etc)
–          Coil Springs/Leaf Springs/Stabilizer bars (SUP7N, SUP9, SUP9A, SUP11A, SUP12V, SAE9254D, 52Cr4Mo2V etc.)
–          Steel for Hydraulic Cylinder Piston Rod (45C8 etc.)


The steel making route is Blast Furnace, Sponge Iron, Electric Arc Furnace, Ladle Refining Furnace, Vacuum Degassing, and Continuous Casting Machines supported by in-house ore beneficiation, Sinter, Coke-oven, Pellet, DRI, Power Plant, and Lime kilns.

The state of the art Continuous Casting Machines produce billets & blooms in sizes 300 x 360 mm, 200 x 240 mm, 200 x 200 mm, 150 x 150 mm, and 130 x 130 mm.

The Straight Length rolling facilities include two bar rolling mills where the rolled products in the size range of 25 mm to 180 mm diameter and Round Cornered Square (RCS) in the size range of 63 mm to 200 mm are produced.

The plant has an illustrious history of collaboration with well known companies like Ovako Steel (now SKF Steel) of Finland, Nikko Industries of Japan, Hamburger Stahlwerke GmbH of Germany, Daido Steel of Japan and recently Aichi Steel Corporation (a Toyota Group Company) of Japan.

The high quality steel has provided us a strong presence in automobile industry. Approvals from prominent organizations like Tata Motors, Caterpillar, Graziano, Arvin Meritor, Mahindra Forging, Bharat Forge, John Deere, Dana Corporation, TOYOTA Tsusho, Indian Railways etc. affirms the high quality steel products from Usha Martin.

Steel Process

Steel Making Process


Section & Size range

  • Bars (Round): 25 – 160 mm
  • Bars (RCS): 63 – 200 mm
  • Flats : Thickness (11-20 mm )
  • Hex : 23.5 A/F – 34.0 A/F
  • Rectangle : 120×130 mm or as per required profile

Categories of Steel

Usha Martin manufactures a wide variety of steel grades including

  • Carbon Steel for forging application
  • Low Alloy Steel for forging application‏
  • Cold Heading Quality Steel
  • Free & Semi free Cutting Steel
  • Spring Steel
  • Bearing Steel
  • Micro Alloyed Steel
  • Bright Bar Quality Steel
  • Steel for Cathode bar
  • Steel for Power Transmission Chains


  • Automatic ultrasonic testing machine for bars
  • MPI testing machine for surface defect detection
  • Blue fracture testing machine for Internal defects
  • LECO Analyser for carbon, sulphur, and gas (Hydrogen, Oxygen, Nitrogen) analysis
  • X Ray Fluorescent Analyser
  • Optical Emission Spectrometer for product composition
  • Impact/Jominy/Blue Fracture/Mobile Spectrometer

QA Certifications

The steel plant was the first steel plant in India to receive TPM certification from JIPM Japan. The robust production system of the facility is evident in key certifications such as :

  • ISO / TS    : 16949
  • ISO 9001  : 2008
  • ISO 14001 : 2004


For more details about speciality steel bar reach us at contact@ushamartin.co.in

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In no event shall Usha Martin Limited be liable for any loss or damage including, without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website.

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