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the hardness of iron decreases with increase in brittleness in general..
however when the temp is increased, the elasticity increases and the brittleness reduces, it continues to show the increasing trend in hardness until a transition temperature, after which the hardness starts decreasing again.
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The main difference between cast-iron and steel?
Steel is an alloy of carbon and iron. If the percentage of carbon is more than 2% then it is called cast iron.
What is the effect carbon content on steel?
Carbon is primary hardening element in steel. Hardness and tensile strength increases as carbon content increases upto 0.85%. Ductility and weldability decreases as carbon content increases. If the solution of carbon and liquid iron is solidified slowly the carbon tends to separate out in the form of graphite flakes (Grey cast iron). It is easily machinable. If the same iron is cast and colled quickly, it is hard and has a higher tensile strength, is difficult to machine (white cast iron).
Is malleable iron a cast iron or wrought iron?
Malleable means can be hammered. Cast iron will crack or break into pieces; it's not malleable. The word wrought means hammered. You could have used a dictionary for definitions; this isn't really an engineering question. The cast iron with carbon content of less than 0.2% is called wrought iron or pure iron. Wrought iron is very soft, plastic and easily deformed, but its strength and hardness are lower, so not widely used. Malleable cast iron is produced from white cast iron, which is made from hot liquid iron with certain chemical components. The white cast iron needs to be treated by malleablizing, such as graphitizing or oxidation and decarbonization, then its metallographic structures or chemical components will be changed, so can become into malleable cast iron. +++ So yes, Malleable Iron is a Cast Iron, but a much less brittle species enabling it to be used almost as a grade of steel. It is an important mechanical-engineering material. ' Wrought Iron was the ancestor of Mild Steel but became obsolete and no longer made, by the early 20C. It was very uneconomical, as well as very labour-intensive in very unpleasant conditions to make; and its internal structure and inconsistent quality rendered it totally unsuitable for the new engineering demands developing rapidly from the 1850s onwards.
What is the Indian standard of SG 500 7 grade cast iron?
This is Speroidal Graphite iron casting. Mechanical Properties required are as followed, Tensile Strength ( MPa ) - Min. 500 Min. 0.2 % Proof Stress ( MPa) - Min. 320 Elongation ( % ) - Min. 7 Brinell Hardness (BHN ) - 160-240 Predominant Constituent of Matrix - Ferrite + Pearlite. Regards, Sujit Doijad 09762225010 s.doijad@rediffmail.com
Is cast iron different from iron?
cast iron consists of 2% - 4% of carbon in it. cast iron is pig iron remelted and thereby refined together with definite amount of limestone,steel scrap, and spoiled castings. it consists of small % of sulphur, silicon,phosphorus and manganese wrought iron is highly refined iron with a small amount of slag forged out into fibres. it consists of 99% iron. it is almost the purest form of iron. it is highly ductile,rusts extremely quickly, it cannot be heat treated
What is the carbon content in cast iron?
The carbon content in cast iron typically ranges from 2% to 4%. This high carbon content is what gives cast iron its characteristic hardness and brittleness compared to other types of iron.
What hardness does a mineral have if it scratched by glass but scratched an iron nail?
It would have to be 5.0 because glass has a hardness of 5.5 and an iron nail has the hardness of 4.5
What hardness does a mineral have if it is scratched by glass but scratches an iron nail?
The mineral would have a hardness between 5.5 to 6 on the Mohs scale. This suggests that it is harder than glass (hardness of 5.5) but softer than an iron nail (hardness of around 5.5 to 6).
What hardness does a mineral have if it does not scratch glass but it scratches an iron nail?
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. This is because glass has a hardness of around 5.5, while an iron nail has a hardness of approximately 4.5. Therefore, if a mineral can scratch an iron nail but not glass, it would fall within this hardness range.
What hardness does a mineral have if it does not scratch glass but scratches an iron nail?
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. It cannot scratch glass (hardness of about 5.5) but can scratch an iron nail (hardness of about 4). This places it in the range of minerals like orthoclase feldspar or apatite.
What hardness does a mineral have if it does not scratch glass but it scratches iron nail?
The hardness would be between 4.5 and 5.5 on the Mohs scale. I actually think it would be 4.5, but to be safe, I would put between 4.5 and 5.5. Hope that helps!
The hardness of iron?
It's actually a rather difficult question to answer as iron can be forged in a number of different ways, each giving a different hardness. I've attached a link to a site giving different hardness values for some treatments of grey iron.
Does aluminum has equivalent hardness of iron's hardness?
no, aluminum is softer.
Is brittleness a characteristic of a metals?
Brittleness is not a characteristic of most metals. Metals are usually ductile and malleable, meaning they can be bent and shaped without breaking. However, some metals, such as cast iron, can exhibit brittleness under certain conditions.
What is the mineral iron on Moh's Scale of Hardness?
What is Mohs hardness of Barium Sulfate
What is the hardness of a iron metal?
This Dick
The triangle describes the complex relationship between interest groups the government bureaucracy and Congres?
iron
