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
    • StructuralRounds, 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 [email protected]

Carbon Steel Product Manufacturing & Supply Range

ProductCarbon Steel
ItemsPipe, Fittings, Flanges, Valves, Fasteners
Size6mm to 610mm, 1/2″ NB to 48″ NB
Pipe TypeSeamless, Welded, ERW, Fabricated
SpecificationsASTM, ASME, DIN, GOST, JIS
Common GradesASME SA 53 Grade B, ASME SA 106 Grade B, ASME SA 333 Grade 6, API 5L – PSL 1 Gr. A, B, X42, X46, X52, X56, X60, X65, X70, ASTM A179, ASTM A192, ASTM A210, ASTM A519
Fittings TypeButt Weld, Screwed & Socket Weld, Flanges, Black, Galvanised Fittings
Other FittingsElbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H)

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

Carbon Steel Pipes, as per ASTM/ASME Standards
ASTM A53/ASME SA53 Grade AASTM A53/ASME SA53 Grade BASTM A106/ASME SA106 Grade AASTM A106/ASME SA106 Grade B
ASTM A106/ASME SA106 Grade CASTM A179/ASME SA179ASTM A192/ASME SA192ASTM A210/ASME SA210 Grade A1
ASTM A210/ASME SA210 Grade CASTM A333/ASME SA333 Grade 1ASTM A333/ASME SA333 Grade 6ASTM A519 Grade 1010
ASTM A519 Grade 1020ASTM A519 Grade 1035ASTM A519 Grade 1045DIN 1629 St37.0
DIN 1629 St44.0DIN 1629 St52.0DIN 2391 St35.0DIN 2391 St45.0
DIN 2391 St52.0DIN 17175 St35.8DIN 17175 St45.8EN 10216-1 P235TR1
EN 10305-1 E235EN 10305-1 E355

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.

Carbon SteelStainless Steel
Vulnerable to rustResistant to rust
BrittleLess Brittle
Wear-resistantLess wear-resistant

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

Carbon SteelTypeStandardGradesSpecification
Medium-TempPipesA106A, B, CThis specification covers carbon steel pipe for high-temperature service.
FittingsA234WPA, WPB, WPCThis specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.
FlangesA105This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, Valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions.
ValvesA216WCBThis specification covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.
Bolts & NutsA193B7This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A1942HStandard specification for nuts in many different material types.
High-TempPipesA335P1, P11, P12, P22, P5, P9This specification covers seamless ferritic alloy-steel pipe for high-temperature service.
FittingsA234WP1, WP11, WP12, WP22, WP5, WP9This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.
FlangesA182F1, F11, F12, F22, F5, F9This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
ValvesA217WC1, WC6, WC9, C5, C12This specification covers steel castings, martensitic stainless steel and alloys steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service.
Bolts & NutsA193B7This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A1942HStandard specification for nuts in many different material types.
Low-TempPipesA3336, 3This specification covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
FittingsA420WPL6, WPL3Standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service.
FlangesA182F304, F316, F321, F347This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
ValvesA182F304, F316, F321, F347This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
Bolts & NutsA193B8This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A1948Standard specification for nuts in many different material types.

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

Steel TypeMaximum forging temperature (°F / °C)Burning temperature (°F / °C)
1.5% carbon1920 / 10492080 / 1140
1.1% carbon1980 / 10822140 / 1171
0.9% carbon2050 / 11212230 / 1221
0.5% carbon2280 / 12492460 / 1349
0.2% carbon2410 / 13212680 / 1471
3.0% nickel steel2280 / 12492500 / 1371
3.0% nickel–chromium steel2280 / 12492500 / 1371
5.0% nickel (case-hardening) steel2320 / 12712640 / 1449
Chromium–vanadium steel2280 / 12492460 / 1349
High-speed steel2370 / 12992520 / 1385
Stainless steel2340 / 12822520 / 1385
Austenitic chromium–nickel steel2370 / 12992590 / 1420
Silico-manganese spring steel2280 / 12492460 / 1350

[Source: From Web]

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