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Carbon, Alloy and Bearing Steel for Various Industries Application.

ISMT is an established market leader in the production of special engineering steels. We produce carbon, alloy and martensitic stainless steel bars with a special emphasis on ultra-clean steels, free machining steels, bearing steels, and on other specially engineered steel grades. With over 15 years of experience in the manufacture of special steels our strength lies in our ability to produce very clean steels consistently and cost effectively; to produce hard to manufacture free machining steels; to develop and custom produce steels that meet specific mechanical or metallurgical requirements; and to deliver small lots of steels.

Modern Equipment and Methods

We operate one of the most modern alloy steel plants in the country located at Jejuri, near Pune. All our steel is produced through the electric arc furnace (EAF) route, is ladle refined, vacuum degassed, continuous cast and rolled. These primary equipments are supplemented by best in class quality enhancing devices such as an automatic mould level controller, non-sinusoidal tundish oscillators, electro-magnetic stirrers etc., with the singular objective of producing the best steel

Carefully Chosen Inputs

The quality of inputs used for melting has a direct bearing on the quality of the output. For this reason, we melt a very carefully chosen mix of virgin metal (pig iron and DRI) and clean scrap so as to control the appearance of tramp elements. We have a trusted set of suppliers all of whom are periodically audited to ensure adherence to our standards. In addition, we test all incoming material for radiation and other hazardous contaminants

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Scrap / Metallics
Primary Melting
160/180/200/225 MM ROUNDS
50 MT ultra high power (36 MVA)electric arc furnace with eccentric bottom tapping system. Facility for continuous charging. Consists of auto melt control unit.
50 MT refining furnace.
Ladle with free board of 500 mm (8MVA-transformer capacity).
Auto feeding arrangement for ferro alloys and cored wire.
Five stage steam ejector.
Facility for addition under vacuum.
Auto feeding arrangement for ferro alloys and cored wire.
Two strand round caster.
In mould electro-magnetic stirring.
Double radius 12/18 m. PLC controlled spray-cooling zones.
Auto mould level controller(AMLC). Argon shrounding during casting. 
Walking hearth reheating furnace.
On line descaler.
Twelve strand, Two- high continuous rolling mill. 
Band saw machine.
Straightening machine
Vacuum emission spectrometer.
Carbon sulphur determinator.
Hydrogen, oxygen, nitrogen gas determinators.
Tensile testing machine.
Impact testing machine.
Hardness tester.
Magnetic crack detector.
Mobile spectrometer.
Metallurgical microscope. 
Electrically operated bogie hearth furnace for: annealing, normalising, spheroidised annealing. 
1.1Checking of charge mix as per standard.
2.1Addition of fluxes for early slag formation.
2.2Check for chemistry.
2.3Process observation and monitoring.
3.1Addition of fluxes for early slag formation of desired chemistry for achieving a high degree of cleanliness.
3.2Addition of alloying elements.
3.3Check for chemistry.
3.4Process observation and monitoring.
3.5Superheat control.
4.1Check for chemistry before trimming addition
4.2Process observation and monitoring.
5.1Check for as cast macro and chemistry.
5.2Control of parameters with respect to casting speed, mould oscillation ,EMS frequency and current and tundish temperature.
6.1Macro routine check.
7.1Monitoring of reheating furnace controls.
7.2Checking of dimension and surface quality during rolling.
8.1MPI/pickling and inspection, eddy current testing.
8.2Ultrasonic testing.
8.3Cut to length.
8.4Colour coding.
8.5Straightning of bars.
8.6Spark / spectral testing of the lot for mix-up detection by the mobile spectrometer / metascope.
8.7Bundling and tagging.
9.1Metallurgical tests like chemistry, macro, micro inclusions, grain size, decarb, step down, gas analysis, blue fracture, mechanical properties and other required test.
9.2Testing and certification as per technical delivery conditions.
10.1Monitoring of heat treatment cycle.
10.2Checking of hardness, micro structure and mechanical properties.
Installed Capacity350,00 MT/annum
Process RouteEAF - LRF - VD - CCM - RM
Heat size45 MT
ProductsAs Cast Rounds
Rolled Round Corned Square (RCS)
Bright Bars (Peeled / Turned) Cold Drawn / Cold Finished)
Size Range
    As Cast Rounds
    Rolled Rounds
    Round Corned Square(RCS)
160,180,200 And 225 mm dia.
25.4 to 115 mm dia for all application 125 to 170 mm dia for seamless tube industry
45 to 75 mm and 125 mm
Standard Hot Rolled Sizes

170MM AND AS CAST - 160,180,200& 225MM
45,50,52,55,60,63,65,70,75 MM AND 125 MM

   Additional size/ shapes upon specific request/agreement.
Supply LengthsStandard 3 to 6 m with 10% shorts down to 1 m or user defined.
Straightness Tolerance
   Hot Rolled
   Hot Rolled and Machine Straightened
   Cast Product
3.0 mm per meter
1.5 mm per meter
5.0 mm per meter
Length Tolerance for fixed Length Supply+ 50, -0.00mm
Condition of EndsStandard Gas Cut / Hot Sheared (as per customer requirements)
Standard Size Tolerance for Hot Rolled Bars / Billets
Nominal Size (mm RCS)
OverUpto and
on size
89114+1.6, -01.20
Nominal Size (mm RCS)
OverUpto and
on size
89100+2.4, -01.80
Tolerance on weight Kg per meter shall be +4%, -0%
For cast rounds size tolerance shall be +3mm and Ovality 2.5% of dia.
Alternative tolerance upon specific request / agreement.
Grades (lllustrative)
Plain Carbon SteelsSAE 1008,SAE 1010, SAE 1012, SAE 1019, SAE 1026, SAE 1035, SAE 1035, SAE 1040, SAE 1045,
SAE 1518, 070M20, 080M40, 080M46, 070M55, CK35, CK45, CK55, CK60 etc.., and equivalent.
Case Hardening Steels665M23, 635M15, 637M17, 815M17, 820M17, 822M17, SAE8617, SAE8620, 15Cr3, 16MiCr5,
20MnCr5, 15CrNi6, SCM415, SCM420, SCM421 etc., and equivalent.
Spring Steels55Si7, 60Si7, 37MnSi5, 50CrV4, 38xc, 50Cr4V2, 51CrMov4, 52Cr4Mo2v etc.,and equivalent.
Free Cutting SteelsSAE 1117,SAE 1137, SAE 1140, SAE 1141, 216M36, SAE 1144, EN-8M, EN-1A etc., and equivalent.
Ball Bearing SteelsSAE 52100, 103Cr2, 100Cr6, SUJ2 etc., and equivalent.
Micro Alloyed SteelsHMnV, 38MnSiVS5, 49MnVS3, C7056 etc., and equivalent.
Other Alloy SteelsSAE 4130, SAE 4135, SAE 4140, SAE 4340, 817M40, 34Cr4, 37Cr4, 41Cr4, 25CrMo4, 42CrMo4, 40NiCrMo4,
40NiCrMo15, SCM435, SCM435, SCM440, SA182-F11, SA 182-F12, SA 181F11, T-5, T-9, T-23, T-91 etc., and equivalent.
Ferritic Stainless SteelsAISI-410, AISI-420
Tool SteelsH-11 and H-13
Control ChemistryTramp Elements(max.)
Carbon03 pointsTin0.02%
Manganese05 pointsCopper0.15%
Sulphur10 pointsNickel0.20%
Chromium05 pointsMolybdenum0.05%
Molybdenum05 pointsBoron4 ppm max
Grain Size GuaranteeASTM 5 to 8Alternative grain size upon specific request / agreement.
Inclusion Rating Guarantee
Carbon & Alloy SteelsThin series ABCD - 2max. Thick series ABCD - 1,5 max or as per cusotmer requirements.
SAE 52100Thin and Thick series A - 1.0 max., B - 0.5 max., c - nil, D - 0.5 max.
Resulphurised SteelsThin and Thick series A - 3.0 max., BCD - 2.0 max.
 Alternative inclusion rating upon specification request / agreement.
Oxygen Level
Carbon   Alloy Steels25 ppm max.
Bearing Steels15 ppm max.
 Alternative Oxygen level upon specification request / agreement.
Hydrogen Level2 ppm max.
Nitrogen Level80 ppm max.
Titanium Level30 ppm max. in Ball Bearing Steel.
Calcium Level10 ppm max. in Ball Bearing Steel.
NDT FacilitiesUltrasonic testing, Spark, Spectral, Mobile spectrometer, MPL testing
Finish Supply ConditionAs RolledBright Bars
Spheroidised AnealedGround
Quench & Tempered