Carbon Steel Sheet

Carbon Steel Sheet Storage

Carbon steel sheet is hard steel that can be used as raw material of knife and other hard products. Carbon steel is also used as a material such as spring steel, because the nature of the carbon steel is hard and can return again to the starting position when under pressure, but bad properties of carbon steel is easily broken if the pressure exceeds the limit of his strength.

Carbon steel product is easily corrode when store in badly environment, so to maintain of carbon steel sheet on storing can be oily the surface to prevent direct contact with the atmosphere. Without cover carbon steel surface with oil substance, will easily corrode and if too long on storage can make carbon steel damage even cannot use anymore.

Carbon steel in storage without proper per-treatment causes corroded

Product Specification of Carbon Sheet materials:

Chemical composition of carbon sheet with electro galvanized material thickness 1 mm

C = 0.12 %
Mn = 0.60 %
P = 0.45 %
S = 0.45 %
Tensile Strenght = 270 – 410 N/mm2
Yield Strength = 140 – 280 N/mm2
Weight = 1.61 lb/ft

Chemical composition of carbon sheet with hot dipped galvanized material thickness 1 mm

C = 0.18 %
Mn = 1.2 %
P = 0.12 %
S = 0.45 %
Tensile Strenght = 270 – 500 N/mm2
Yield Strength = 350 N/mm2
Weight = 1.61 lb/ft

Transportation of Carbon Sheet Material

Transportation is another problem for steel material that sometimes transportation is not prepare in perfect condition. Long transportation may affected by air humidity and rain. The problem transportation on rainy season make inside the covering of material very humid and this make carbon sheet material begin corroded like on the above picture.

Transportation Problem

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Carbon Steel

Carbon Steel Definition

It is important to clarify the meaning of carbon steel in the generic sense and in the more narrow context used in this report. The term steel is usually taken to mean an iron-based alloy containing carbon in amounts less than about 2%. Carbon steels (sometimes also termed plain carbon steels, ordinary steels, or straight carbon steels) can be defined as steels that contain only residual amounts of elements other than carbon, except those (such as silicon and aluminum) added for deoxidation and those (such as manganese and cerium) added to counteract certain deleterious effects of residual sulfur. However, silicon and manganese can be added in amounts greater than those required strictly to meet these criteria so that arbitrary upper limits for these elements have to be set; usually, 0.60% for silicon and 1.65% for manganese are accepted as the limits for carbon steel.

The carbon steels of interest in this report are those with carbon equal to or less than about 0.35% to facilitate welding. A further distinction can be made according to carbon content. Low-carbon steels (below 0.15% carbon) contain too little carbon to benefit from hardening and are frequently used in the hot-worked or - for maximum ductility - the annealed condition. Steels of less than 0.25% carbon (often referred to as mild steel) have somewhat higher strength near the upper carbon level.

Medium-carbon steels (0.25–0.55% carbon) are often heat-treated (quenched and tempered) to achieve yet higher strength, but it is mainly the compositions below 0.35% carbon that are relevant to this report. Carbon steel is one of the most widely used materials in the industry. This material is used not only in many of the water- and steam-pressure containing systems in power plants but also in the supports for these systems. Although this report concentrates primarily on the pressure containing applications of carbon steels, it can also be a useful tool for structural carbon steel fabrication issues.

As the description implies, the primary alloying element of these iron based materials is carbon. Because carbon is such a powerful alloying element in steel, there are significant differences in the strength, hardness, and ductility achievable with relatively small variations in the levels of carbon in the composition. However, other important factors - such as material fabrication, heat treatment, component fabrication, and fabrication processes - can result in significant changes to the properties of the carbon steel components. In some cases, requirements established by codes and standards must be supplemented to achieve adequate results when working with carbon steels. It is important for the utility engineer to have access to metallurgical and properties information to aid in making decisions for projects involving carbon steels. This report is intended to provide such information on the most common boiler and piping materials used in power plants. Not all carbon steels will be covered explicitly, but the user should be able to draw relevant information needed for any required decision. The difficulties on formulate a carbon steel material is on their mixing, certain technology use for this mixing in order can make homogenize composition.

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Mild Steel and Stainless Steel

Mild Steel and Stainless Steel Composition for Application

So many steel are used for spare part industry and for car. Each kind of steel should be used for certain purpose. Not only looking of steel become better to use, like stainless steel that is stand to corrode but stainless steel is bad to place on hot area. Stainless steel easily to deform cause of heat and stainless steel more elastic compare to carbon steel.

Stainless Steel actually an alloy steel that contain minimum 11.5 % of chromium, so stainless steel wiil stand to corrode. Stainless steel better use in humid environment because stainless steel will stand to this environment and stay along time without corrosion. Stainless steel have sufficient amount of chromium substance on the surface so that passive film of chromium oxide form on the surface which prevent to further corrosion.

Carbon steel is sometimes referred to as mild steel or plain carbon steel. American iron steel Institute defines that carbon steel have no more than 2% of carbon and no other appreciable alloying element. Carbon steel make up the the largest part of steel production and is used in vast of application.

Usually carbon steel are stiff and strong, this kind of steel suitable as engine material that is not easily to deform cause of engine heat. Carbon steel also exhibit of ferromagnetism, so carbon steel can be used as motors and electrical appliances. But carbon steel have poor resistance to corrode so this steel is not suitable placed on humid environment.

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Galvanized Manufacturers

Galvanized Metal and Galvanized Sheet Metal

Galvanizing process usually use hot dipped process, applying a thin layer of zinc metal directly in based metal. The metal itself can be in bar form or sheet. Cold roll sheet or metal is passing through the molten bath of zinc. Galvanizing steel forms in the metal surface and will bond to the metal and underlying steel sheet or plate, in the surface layer will creating a barrier that becomes part of the steel itself.

Hot dipped galvanized steel has good resistance to corrosion and offer low cost compare to other good steel like stainless steel who have properties stand to corrosion. Galvanized steel can be said have free maintenance, especially when rust resistance is required.

Many of Galvanized Steel Plate and Sheet can be produced from India or some others places like produce in Columbus Ohio.

Galvanized steel sheets manufacture
A1. Vasant Avenue, cooperative Housing, Ramkuvar Road Dahisar East, Mumbay – 400068 Mahashira.

Galvanized Plain Sheets
Fortran Steel Private Limited
No. B-51/W-20-21-5, MIDC, Taloja, Maharashtra

Worthington steel Industries, hot dipped galvanized steel suppliers headquarter in 200 Old Wilson Bridge Rd. Columbus Ohio.

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Carbon Fiber

Carbon Fiber Application

Carbon fiber or in other name is graphite fiber, often abbreviate CF, a material consisting of fiber about 5 to 10 micro meter in diameter and composed mostly of carbon atom.

Produce carbon fiber is by bonded carbon atoms together in crystal aligned parallel to the long axis of the fiber as a crystal alignment gives the fiber high strength to volume ratio. Several thousand carbon fibers are bundled together to form a tow, which may be used by itself or woven into a fabric.

The benefit of carbon fiber are as follows:
  • High stiffness
  • High tensile strength
  • Low weight
  • High chemical resistance
  • High temperature tolerance
  • Low thermal expansion
Carbon fiber is prefer use in aerospace, civil engineering, military and motorsports, competition sports. The price of carbon fiber relatively expensive compare to the similar product like glass fiber or plastic fibers.

When carbon fiber combined with other material like in composite, if combine with plastic resin and wound, it called as carbon fiber reinforced polymer.

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