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Chrome in heat-resistant steel

Ferritic steel

Chromium in the composition of heat-resistant ferritic steels significantly increases their oxidation resistance. However, the effect of Cr is less effective than that of molybdenum, titanium and vanadium. Ferritic steels containing chromium improve properties such as creep resistance, long-term strength, recrystallization temperature and self-diffusion activation energy. Also, chromium, when tempering deformed austenite, allows its crystal lattice distortions to be preserved. The effect of chromium on the heat resistance of ferritic steel also depends on the presence of other alloying elements.

Austenitic steel

Chromium changes the crystalline lattice of the y-solid solution. In particular the atomic bonding energy of austenitic steels increases and the heat resistance and recrystallization temperature improve. The maximum heat resistance was achieved with the introduction of 15% chromium. Strengthening of austenitic steels occurs due to the formation of carbon-carbide series of chromium, which are released in the y-solid solution during aging and hardening. However, the hardening level decreases in proportion to increasing operating temperature, due to coagulation of chromium carbides, due to the low resistance of chromium carbides to heating. Therefore, chromium alloying in austenitic steels is not the most effective way to increase their heat resistance.

Highly alloyed steel

Chromium can be used to modify the solubility of the 'y-phase in nickel, titanium and aluminum steel alloys. Thus, dispersion hardening of these alloys is achieved. However, this result is not always observed. Thus, in the case of using a significant amount of chromium for rolling high-alloyed heat-resistant steel, the formation of ferritic elements occurs, which dramatically reduces the heat-resistant properties of the alloy. Thanks to the optimization of production, high-alloys can be bought today at an optimal price.


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Auremo supplier's warehouse offers the widest selection of heat-resistant steel. Always in stock heat-resistant rolled steel, the price is due to the technological features of production without the inclusion of additional costs. Buy heat-resistant rolled steel, the price - the best from the supplier. We are waiting for your orders. We have the best price-quality ratio for the entire range of products. For communication experienced managers - will promptly help you to buy heat-resistant rolled products in bulk or in installments. Regular customers can buy heat-resistant steel with a discount discount, the price - the best in this segment of rolled products. Supplier Auremo is a recognized expert in the non-ferrous metals market. Thanks to the representative offices in Eastern Europe, we have the possibility of prompt interaction with trading partners.