Both of cast iron and cast steel are Fe-C alloys. As a result of the different web content of carbon, silicon, manganese, phosphorus, sulfur and various other chemical elements, they provide various metallographic structure as well as reveal several mechanical properties and also castabilities. It is usually considered that carbon web content over 2% is cast iron while contains in between 0.1– 0.5% carbon is as cast steel. Let's take a look at the distinction in between steel castings as well as iron castings according to its classification and applications.
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Gray cast iron. High carbon web content (2.7% ~ 4.0%). Gray cast iron is one of the most extensively utilized actors iron consisting of flake graphite (bookkeeping for greater than 80% of the total production of cast iron). Carbon is mainly in the type of flake graphite, grey colored, provides low melting factor (1145 ~ 1250 ℃) and also tiny shrinkage throughout solidification, near to carbon steel in compressive strength and also solidity, excellent shock absorption, utilized for making machine device bed, cyndrical tube, box and also other architectural components.
Vermicular cast iron. It obtained from grey cast iron after vermicular treatment. Its precipitated graphite is vermicular shaped, in between flake rock and also spheroid. Its chemical framework is similar to that of grey cast iron, its mechanical residential or commercial properties resemble that of actors iron, as well as its castabities are in between grey cast iron and also nodular cast iron.
Can be utilized in making cars components.
Ductile iron. The nodular graphite gotten by spheroidization and shot kind gray actors iron water is called ductile actors iron, which is a sort of high-strength actors iron with comprehensive residential or commercial properties near to that of steel as well as has a large application in industrial areas. It has greater strength, much better toughness and plasticity than ordinary gray actors iron.
Made use of in the manufacture of internal combustion engines, car components as well as farming machinery.
Cast steel is iron-carbon alloy with carbon web content listed below 2.11%. Cast steel has excellent extensive performance, weld-ability and workability, but it has bad shake-suction and spreading efficiency compared to cast iron. Cast steel can be divided into actors carbon steel, cast low alloy steel and also cast unique steel according to chemical element structure.
Cast carbon steel. Cast steel with carbon as the primary alloying aspect as well as a small amount of other elements. It can be split right into casting low carbon steel (consisting of carbon less than 0.2%), casting average carbon steel (including carbon 0.2% ~ 0.5%), casting high carbon steel (including carbon greater than 0.5%). Its strength and also solidity rise with the rise of carbon content. Cast carbon steel has a higher strength, plasticity and also durability, affordable, used in hefty machinery made use of to create a huge load of parts, such as rolling device frame, hydraulic press base; www.wldsteel.com manufacture of hefty effect bearing parts such as cushions, side structures, wheels as well as combinings on railway cars.
Cast low alloy steel. Cast steel having manganese, chromium, copper and also various other alloying components (overall less than 5%). It has greater effect toughness and can acquire far better mechanical residential properties through warmth therapy. Casting low alloy steel has much better performance than carbon steel, which can reduce the high quality of parts and also enhance the service life.
Casting special steel. Alloy cast steel fine-tuned for special demands. It normally consists of a high quantity of one or more alloying aspects to obtain a specific residential or commercial property. For example, high manganese steel including manganese 11% ~ 14% can endure influence wear, mainly used in mining machinery, building and construction machinery wear components; All kinds of stainless-steels with chromium or chrome-nickel as the main alloying element are utilized for parts that are corroded or operate at heat above 650 ℃, such as valve body, pump, container or vapor wind turbine covering of large ability power plant for chemical market.
As a whole, cast iron has reduced elongation, shrinkage as well as effect toughness than cast steel ， its compressive strength and also seismic resistance are likewise far better than cast steel ； Cast iron is often less expensive while raw steel is extra pricey deo to more material costs, power, and labor required to produce a final product. The primary advantage of cast steel is the style flexibility, which enables it's excellent for complicated forms and also hollow cross-section parts. They have their very own benefits as well as downsides, so which should be selected that depends the application as well as their physical properties.