Heat Resistant Relaxation Resistant Steel. History and interesting.

Are you interested in the history of heat-resistant relaxation-resistant steel? Supplier Avlob offers to buy heat-resistant, relaxation-resistant steel at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

Technical specifications

Heat-resistant alloys are considered, which retain at high temperatures for a given period of time sufficient mechanical strength and heat resistance. Resistant against scale and periodic fluctuations of external temperatures (relaxation-resistant) are the steels, which acquire the necessary resistance against surface chemical destruction by aggressive gaseous substances. Critical are temperatures that exceed 550… 600 ° C. Supplier Avlob offers to buy heat-resistant, relaxation-resistant steel at a bargain price. The price is the best in this segment of rental.

Heat resistance

Heat resistance is determined by such operational parameters as the creep limit and the ultimate strength limit. Heat resistance and relaxation resistance are established by the results of technological tests for short-term stretching, which is performed at the above temperatures. Heat resistance and relaxation resistance depends on the chemical composition of the steel and its structure. In particular, the considered group of steels must necessarily contain in its composition elements such as tungsten, titanium, molybdenum, cobalt, vanadium, niobium, and chromium. Sometimes manganese and nickel are also added to the composition, which gives the alloy an austenitic structure that positively influences the heat resistance index.

Stamps of heat-resistant and relaxation-resistant steels

In terms of the content of the basic alloying elements, the steel alloys are divided into low-, medium- and high-alloyed. In low-alloy steels of this class, the total presence of alloying elements can not be higher than 4… 5%. For medium-alloyed, this percentage increases to 9%, and for highly alloyed ones it reaches 20… 25%. After quenching and subsequent slow cooling in still air, the microstructure of heat-resistant and relaxation-resistant steels can be pearlitic, martensitic, martensitic-ferritic, ferritic, austenitic-martensitic, austenitic-ferritic and purely austenitic. In low-alloyed steels, perlite predominates in the structure, medium-alloyed perlite, martensite or martensite + perlite. Highly alloyed perlite alloys in their microstructure do not contain.

Delivery, price

Are you interested in the history of heat-resistant relaxation-resistant steel? To buy heat-resistant, relaxation-resistant steel at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. The supplier Avlob offers to buy heat-resistant, relaxation-resistant steel at the optimal price in bulk or at retail.