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Why hardenibility is not so high in plain carbon steels?
To harden a steel, it is heated to the austenitic region and then quenched to martensite. The rate at which the steel is quenched must be rapid enough to form martensite and not other microstructures (namely bainite, pearlite, or ferrite), which are not as hard. The cooling rate is a function of composition. Adding alloying elements to steel maintains hardenability at slower cooling rates, essentially shifting the TTT diagram. TTT diagram for steel in link below.
What chemical used to harden tool steel?
carbon,
What is the process of rapid cooling of heated metal?
Quenching , or quench hardeningis the process of rapidly cooling hot metal in a cold liquid. Its a process in which iron alloys and steel are hardened. This is done by heating the material to a certain temperature, and then cooling it rapidly in a cold liquid, usually water.
Difference between air hardening and stainless steel?
There isn't really a difference since a piece of steel can both stainless and air hardened. Stainless steel is a steel alloy with a minimum of 10% chromium content by mass. Metals can be hardened in a variety of ways. They may be work hardened, tempered, air or oil hardened, for example. Tempering, or the systematic heating, cooling and reheating of a material is one technique that might be used to harden steel.
What is cementite?
Cementite is a compound that is made of iron and carbon, and is sometimes referred to as iron carbide. Because it is a hard compound, it is often used to mix with steel and harden the steel.
Which item can be tempered is it steel or salt or water?
Steel can be tempered (hardened by heat treatment followed by quenching -cooling).
Why is saw blades made from steel?
Because it's strong, flexible, easily tempered to harden cutting area
What do you mean by quenching of steel?
quenching is rapid cooling of steel to be heat treated, there are basically four types of quenching: 1- by water. 2- by oil. 3- by air. 4- by furnace. water oil air furnace tensile stress 175*104 112*104 88*104 52*104 (N/mm2)
What is the best wear-resistant steel?
When it comes to wear-resistant steel, there are a range of options to choose from. Some steel will be better for certain applications than others. For example, for high-impact applications, Manganese steel can work harden from 220 to 550 Brinell. For high impact applications with some sliding abrasion, Endura steel is the best. It is very tough, very hard, very abrasion resistant, easy to process and weld, and is competitively priced.It can work harden from 470 to 560 Brinell. For more information about wear-resistant steel and other steel products,
How much steel required for square meter in roof slab?
for residential building 1 sqm steel required =8kgs
How do you remove a brass disc fitted into a steel plate by cooling or heating?
by heating
How much magnese is required to manufacture one tonneof steel?
nearly 10 kg of manganese is required to manufacture one tonne of steel
