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304l Stainless Steel Bar Heat Resistance

Nov. 02, 2018

Heat resistance means that 304l Stainless Steel Bar can maintain its excellent physical and mechanical properties at high temperatures.

Carbon effect: Carbon is strongly formed and stabilized in austenitic stainless steel. Austenite is formed and the elements of the austenite region are enlarged. The ability of carbon to form austenite is about 30 times that of nickel. Carbon is a kind of interstitial element, which can significantly increase the strength of austenitic stainless steel by solid solution strengthening. Carbon also improves the stress and corrosion resistance of austenitic stainless steels in highly concentrated chlorides such as 42% MgCl2 boiling solutions.

However, in austenitic stainless steels, carbon is often considered a harmful element, mainly due to some conditions in the corrosion resistance of 304 Stainless Steel Bar Stock (such as welding or heating at 450~850 °C), carbon can be used in steel. Chromium forms a high chromium Cr23C6 type carbon compound, which leads to partial depletion of chromium, which reduces the corrosion resistance of steel, especially intergranular corrosion resistance. therefore. The newly developed chromium-nickel austenitic stainless steels since the 1960s are mostly ultra-low carbon with a carbon content of less than 0.03% or 0.02%. It can be known that as the carbon content decreases, the intergranular corrosion sensitivity of steel decreases, when the carbon content is lower than 0.02% has the most obvious effect, and some experimental pearls also pointed out that carbon also increases the tendency of pitting corrosion of chromium austenitic stainless steel.

304l Stainless Steel Bar

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