Carbon Steel Suppliers, Manufacturers, Stockist in India – Buy Top Quality Carbon Steel Sheets, Plates, Coils, Pipe, Tubing, Wire, Fittings, Flanges and Round Bars

• Metallica is one of the biggest carbon steel manufacturer and stockholder in India, with over 250 customers in India and overseas. We are bulk buyers and exporters of carbon steel from factories in India (Jindal, MSL, ISMT) and overseas (China, Japan, Korea, Ukraine, Europe), and are able to give you the best price and quality just in time.
• We stock all major grades of carbon steel pipes such as ASME SA 53 Grade B, ASME SA 106 Grade B, ASME SA 333 Grade 6 and API 5L – PSL 1 Gr. A, B, X42, X46, X52, X56, X60, X65, X70, ASTM A179, ASTM A192, ASTM A210, ASTM A519
• We deal in other carbon steel products as well, like
  • Structural – Rounds, Plates, Sheets, Flats, Squares, Hexagons, Channels, Misc. Channels, I-Beams, Wide Flange Beams
  • Pipes & Fittings – Round Tubing, Square Tubing, Rectangle Tubing, Seamless Pipes, Welded Pipes, Galvanized Pipes, LSAW Pipes, Spiral Welded Pipes, Buttweld Fittings, Forged Fittings, Flanges, Nuts & Bolts, Fasteners
  • Hot Rolled – Plates, Abrasion Resistand Plate, Perforated Sheets, Round Bars, Flat Bars, Forgings
  • Cold Rolled – Sheets, Rounds, Flats, Squares, Hexagons, Precision Shafting
• Being one of the largest volume carbon steel products supplier, we can guarantee you the lowest prices. At Metallica Metals, we believe in selling in volume and increasing our customer base across the globe, enabling us to work on low margins. We have an extensive trader network across India and the Middle East, who buy from us on a regular basis. In addition to traders, we have many EPC contractors, companies and end users in various industries as our customers for carbon steel products.
• India’s Biggest Carbon Steel Products Supplier – Pipes, Fittings, Flanges, Fasteners. We are one of the biggest carbon steel pipes, fittings, flanges, valves and fastener suppliers and manufacturers in India. If you are looking for a supplier for carbon steel pipes and fittings at low prices, with best quality, please do contact us on sales@metallicametals.com

Carbon Steel Product Manufacturing & Supply Range

We Manufacture & Supply Complete Range of Carbon Steel Products

What is Carbon Steel?

Carbon steel is a steel with carbon content up to 2.1% by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: Steel is considered to be carbon steel when: no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; the specified minimum for copper does not exceed 0.40 percent; or the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60.
The term “carbon steel” may also be used in reference to steel which is not stainless steel; in this use carbon steel may include alloy steels.

As the carbon percentage content rises, steel has the ability to become harder and stronger through heat treating; however, it becomes less ductile. Regardless of the heat treatment, a higher carbon content reduces weldability. In carbon steels, the higher carbon content lowers the melting point.

Chemical & Mechanical Properties of Carbon Steel Pipes and Tubes

Difference Between Carbon Steel and Stainless Steel

Carbon steel and stainless steel have the same basic ingredients of iron and carbon. Their main difference is alloy content—carbon steel has under 10.5 percent alloy content, while stainless steel must contain 10.5 percent chromium or more. That essential difference is what gives carbon steel and stainless steel their distinct physical characteristics.

Types of Carbon Steel

1. Low carbon steel – Carbon content 0.55-1.05%
2. Medium carbon steel- Carbon content 0.25-10.6%
3. High carbon steel- Carbon content 0.9-2.5%
4. Super High carbon steel- Carbon content 2.5-3.0%

Commonly used Carbon Steel explained below:

1. Low Carbon Steel

• Plain carbon steels – very low content of alloying elements and small amounts of Mn.
• Most abundant grade of steel is low carbon steel – greatest quantity produced; least expensive.
• Not responsive to heat treatment; cold working needed to improve the strength.
• Good Weldability and machinability.
• High Strength, Low Alloy (HSLA) steels – alloying elements (like Cu, V, Ni and Mo) up to 10 wt %; have higher strengths and may be heat treated.

2. Medium Carbon Steel

• Carbon content in the range of 0.3 – 0.6%.
• Can be heat treated – austenitizing, quenching and then tempering.
• Most often used in tempered condition – tempered martensite.
• Medium carbon steels have low hardenability.
• Addition of Cr, Ni, Mo improves the heat treating capacity.
• Heat treated alloys are stronger but have lower ductility.
• Typical applications – Railway wheels and tracks, gears, crankshafts.

3. High Carbon Steel

• High carbon steels – Carbon content 0.6 – 1.4%.
• High C content provides high hardness and strength.
• Hardest and least ductile.
• Used in hardened and tempered condition.
• Strong carbide formers like Cr, V, W are added as alloying elements to from carbides of these metals.
• Used as tool and die steels owing to the high hardness and wear resistance property.

4. Super High Carbon Steel

• Approximately 1.25–2.0% carbon content.
• Steels that can be tempered to great hardness.
• Used for special purposes like (non-industrial-purpose) knives, axles or punches.
• Most steels with more than 2.5% carbon content are made using powder metallurgy.

Application of Carbon Steel

Carbon steel is used in boilers, pressure vessels, heat exchangers, piping, and other moderate-temperature service systems in which good strength and ductility are desired. Significant other factors include cost, availability, and the ease of fabrication.

Effects of Alloying Elements on Steel

•Manganese – strength and hardness; decreases ductility and weldability; effects hardenability of steel.
•Phosphorus – increases strength and hardness and decreases ductility and notch impact toughness of steel.
•Sulfur decreases ductility and notch impact toughness Weldability decreases. Found in the form of sulfide inclusions.
•Silicon – one of the principal deoxidizers used in steel making. In low-carbon steels, silicon is generally detrimental to surface quality.
•Copper – detrimental to hot-working steels; beneficial to corrosion resistance (Cu>0.20%).
•Nickel – ferrite strengthener; increases the hardenability and impact strength of steels.
•Molybdenum –  increases the hardenability; enhances the creep resistance of low-alloy steels.

Standard and Code Specification of Carbon Steel

Frequently Used ASTM Grades of Carbon Steel

Heat Treatment

The purpose of heat treating carbon steel is to change the mechanical properties of steel, usually ductility, hardness, yield strength, or impact resistance. Note that the electrical and thermal conductivity are only slightly altered. As with most strengthening techniques for steel, Young’s modulus (elasticity) is unaffected. All treatments of steel trade ductility for increased strength and vice versa. Iron has a higher solubility for carbon in the austenite phase; therefore all heat treatments, except spheroidizing and process annealing, start by heating the steel to a temperature at which the austenitic phase can exist. The steel is then quenched (heat drawn out) at a moderate to low rate allowing carbon to diffuse out of the austenite forming iron-carbide (cementite) and leaving ferrite, or at a high rate, trapping the carbon within the iron thus forming martensite. The rate at which the steel is cooled through the eutectoid temperature (about 727°C) affects the rate at which carbon diffuses out of austenite and forms cementite. Generally speaking, cooling swiftly will leave iron carbide finely dispersed and produce a fine grained pearlite and cooling slowly will give a coarser pearlite. Cooling a hypoeutectoid steel (less than 0.77 wt% C) results in a lamellar-pearlitic structure of iron carbide layers with α-ferrite (nearly pure iron) between. If it is hypereutectoid steel (more than 0.77 wt% C) then the structure is full pearlite with small grains (larger than the pearlite lamella) of cementite formed on the grain boundaries. A eutectoid steel (0.77% carbon) will have a pearlite structure throughout the grains with no cementite at the boundaries. The relative amounts of constituents are found using the lever rule. The following is a list of the types of heat treatments possible:

1. Spheroidizing
2. Full annealing
3. Process annealing
4. Isothermal annealing
5. Normalizing
6. Quenching
7. Martempering (Marquenching)
8. Tempering
9. Austempering

[Source: From Web]

Forging Temperature of Steel

[Source: From Web]

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