Hexagon Bars

Ambica Steels is the largest producer of hexagon Stainless Steel bars in India. Ambica Steels produces these materials for a wide variety of applications and industrial sectors. These user segments are the benchmark for quality. Every part is continually and stringently checked for quality and certified. Ambica’s steels are melted, cast and formed with the perfection and care.

Due to its two-phase microstructure, Duplex steels are extremely tough to produce. It took Ambica Steels many years of constant trials & errors, before gaining a complete control over this steel. The dual phase structure demands a perfect balance in the chemistry of these steels. Duplex steels also show an irregular behavior when undergoing various hot working processes. But thanks to the strong determination of our Research & Development team, as Ambica Steels now enjoys the reputation of being one of the most reliable suppliers of Duplex materials in domestic as well as the international market.


When Harry Brearley, the English metallurgist first manufactured the stainless steel accidentally in 1913, he did not have imagined that one day it could be a necessity for the humankind. But, today it is! From our kitchen utensils to large-scale industrial applications, stainless steel has proved its mettle sector-wide. Its properties like light-weight, corrosion and erosion resistant and strength make it appealing to businesses.

Ambica Steels Ltd. is the leading Stainless Steel Hexagon Bars manufacturer in India. The company started off as a foundry from Danieli and today it is the leading producer of the hexagon bars. A typical stainless steel hexagon bar ranges from 12mm-45mm diameter. They are durable, heat resistant, low maintenance, impact resistant and flexible. Therefore, the bars have all the features that are vouched for by the industries. Ambica Steels Ltd. has earned a moniker for delivering unparalleled quality products that are free from brittle failures and corrosion and are highly ductile. Our products are shipped to over 56 countries in an array of steel grades.

Size range     12 mm – 46 mm (1/2 inch- 1 ¾ inch)
Size Tolerances     h10 and h11
Length     2 metres – 6 metres
Chamfering     Available in 30 to 60 degree through fully automatic both-end chamfering machine (Only in Hexagon bars)
Crack Test     Magnetic Particle Inspection (MPI)
Ultrasonic Test     100% tested through Digital Ultrasonic Flaw Detector, as per ASTM A-388, EN 10308
 (class 1 to 4), API 6A/ISO 10423:2003-PSL 3, SEP 1920:1984 (class A, B,C), MIL STD 2154
Length Tolerance     Available in special cut to length bars in tolerance –0/+10 mm (-0/+0.5 inch)
Surface Finish     Cold drawn condition and Belt polished condition
Heat Treatment     Solution Annealed, Annealed
Grades     AISI: 303, 304L, 316L, 316Ti, 321, 409, 410, 430F, 17-4 PH/630
  DIN: 1.4305, 1,4307, 1.4404, 1.4571, 1.4541, 1.4006, 1.4104, 1.4016, 1.4542

  We make customized HRAP stainless steel square bars to meet the clients’ industry-specific needs.
  Please find the specifications for it below.

Hot Rolled, Cold Rolled And Cold Drawn Steel

In the world of steel manufacturing process, the stainless steel undergoes a lot of processes starting with molding, rolling and ending with reshaping. In between, the tensile strength to the steel is imparted by passing it through different temperatures. It is the rolling of the steel where the metal stock is passed through the pair of rolls. The temperature at which the steel undergoes for rolling is determined as per the application for which it will be used. However, there are three types of processes under it –

Hot Rolling

Herein, the temperature of the metal should be greater than the recrystallization temperature, or it should be such that it can alter the grain structure.

Cold Rolling

This method is performed at the room temperature, and the temperature of the metal should be below the recrystallization temperature.

Cold Drawn

Similar to Cold Rolling, this process is too performed at room temperature, but in this process, the steel culminates into the wire like spokes of a wheel or paper clip.

As per the customer’s specifications, steel undergoes any of the aforementioned processes, and they are then transformed into requisite shapes such as the stainless steel hexagon bars.

The high-quality, sturdy stainless steel that our clients receive come straight from state-of-the-art three manufacturing facilities based in and around the capital city of India, New Delhi. Our production facilities are laden with modern, technologically-advanced and sophisticated equipment which are as follows:

  • Electric Melting Furnaces
  • Heat Treatment Furnaces
  • Ladle Refining Furnace
  • Argon Oxygen Decarburization Converter
  • Bloom Continuous Casing Machine, 2 stands, 9/16 meter radius
  • Bottom Pouring or Ingot Casting
  • Bar Hot Rolling Mill with 4 stands of 460 mm and 6 stands of 330 mm
  • Electro Magnetic Stirrer
  • Centerless Grinding
  • Polishing Machines For Smooth Steel Surface
  • Bar-to-Bar Drawing Machines
  • Schumag Combined Drawing & Polishing Machines
  • Avante-Garde Mechanical & Chemical Laboratory
  • Modernistic Finishing & Inspection Lines

All the processes are carried out under a single roof which ensures that the products are manufactured and delivered on time. We customize the work schedule of our employees to suit the customized requirements of our clients. Our Company adheres to strict quality check procedures, the inspection of which begins with the designing stage right up to the production. It is inspected whether the materials used are in conformity to the agreed specifications. Whether the heating and shaping treatments are done with utmost care?

If any internal defect is foreseen, we resort to ultrasonic inspection to rectify the same. The quality control measures help us in delivering what has been promised to the client. We have zero tolerance towards negligence and due to this, we have several happy clients.

The stainless steel bars are commonly used as a raw material by several industries. Gone are the days when the only application of stainless steel was found useful by the kitchen utensil manufacturers. Today, it is a billion-dollar industry, and it is making its presence felt worldwide. Each day, increasing number of sectors are realizing the importance of stainless steel. It is rightly called as the Green Metal because it is environment-friendly and can be recycled. The industries that it caters to include –

  • Pumps/Electric Motor Industry
  • Automobile Industry
  • Defence Sector
  • Railways
  • Health & Sports
  • Agriculture
  • Textile Industry
  • Decorative & Furniture
  • Food Processing Industry
  • Tools & Fixtures
  • Houses & Fittings
  • Mining
  • Miscellaneous

The stainless steel come in a variety of grades and our top-notch facilities are equipped with technologically advanced equipment. The sophisticated machines coupled with direct supervision help us to produce high-quality steel. We have developed a niche in this industry and our clients can ask for stainless steel in grades like Stainless Steel 303, Stainless Steel 304, Stainless Steel 316, Stainless Steel 420, Stainless Steel 431, and Stainless Steel 2205 and much more.

Grade Description
  303  303 grade represents the optimum in machining among the austenitic stainless steels. It is primarily used when production involves extensive machining. 303 is available in Improved Machining grade with machining characteristics significantly higher than that of the standard 303.
  304  304 grade is dual certified as grade 304 and 304L. Grade 304 is the standard “18/8” stainless. It has excellent forming and welding characteristics. Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components. 304 is available in Improved Machining grade with machinability significantly higher than that of the standard 304.
  316  316 grade is dual certified as grade 316 and 316L. 316 is the standard molybdenum-bearing stainless steel, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. 316 is available in Improved Machining grade with machinability significantly higher than that of the standard 316.
  420  420 grade can be hardened by quench-and-temper heat treatment. It contains a minimum of 12 per cent chromium, just sufficient to give corrosion resistance properties. It has good ductility in the annealed condition but is capable of being hardened up to Rockwell Hardness 50HRC, the highest hardness of the 12 per cent chromium grades. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished. 420 is available in Improved Machining grade with machinability significantly higher than that of the standard 420.
  431  431 grade is a heat treatable martensitic, nickel-bearing grade has the best corrosion resistance properties of all the martensitic grades. It has excellent tensile and torque strength, and good toughness, making it ideally suited to shafting and bolt applications. It can be hardened to approximately 40HRC. Because of its high yield strength, this grade is not readily cold worked and is therefore not recommended for use in operations such as cold heading, bending, deep drawing or spinning. 431 is available as in Improved Machining grade with machinability significantly higher than that of the standard 431.
  2205  2205 grade is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength.

Stainless steel is characterized by the features it possesses, and some of these are mentioned below –

  • Rust-free
  • High tensile strength at all temperatures
  • Steel development in the electric melting steel furnace
  • 100% pure stainless steel
  • Comprehensive and thorough inspection at multiple stages of production
  • Steel development in the controlled environment – melting, heating, and shaping
  • Assessing input materials as per client’s specifications
  • Monitor metallurgical operations
  • Ultrasonic flaw detector to identify an internal flaw
  • Improved Machining grades to ensure the level of hardness and high corrosion capabilities
  • Leveraging technological innovations to manufacture Avante-grade stainless steel bar
  • Statistical monitoring of the results

Founded by Mr. CP Gupta as a foundry in 1970, today Ambica Steels is one of the largest stainless steel conglomerates in India. Our commitment is to enrich the lives of the people through innovation. Towards this end, we continually strive to enhance our capabilities so that our clients benefit. We produce semi-finished and cold-finished stainless steel products. Our backbone is the strong and committed team of professionals who bring their expertise of the industry to one table. Currently, we manufacture the following products –

  • Bright Bars
  • Precision Round Bars
  • Hexagon & Square Bars
  • Flat Bars
  • Hot Rolled Bars
  • Forging Quality Ingots
  • Duplex Stainless Steel
  • Precipitation Hardening Steels (17-4 Stainless Steel)

Ambica Steels is an ISO 1400:2008 and ISO 9001 2010 certified organization. The industry has rewarded us with the following laurels and certifications for the efforts we have put in these four decades –

  • AD 2000 MERKBLATT W0
  • BS OHSAS 18001:2007
  • PED 97 23 EC
  • Z AMBICA 1326WL111860)

To know more about our Stainless Steel Bright Round Bars product and other stainless steel products, please enquire now.