Heat resistant steels and alloys
Technical Characteristics
The main properties that distinguish heat-resistant grades from other alloys are their high resistance to creep and long-term strength. It is these qualities show how long the products are able to work in conditions of exposure to elevated temperatures. The most common in use is heat-resistant steel, where the main element is chromium. Also heat-resistant steel differs in the type of hardening, the method of alloying, and the number of elements. «Auremo» is a profitable supplier in the heat-resistant segment.
Production
Nickel-based alloys obtain enhanced heat resistance not only through multicomponent alloying, but also through subsequent heat treatment. Highly alloyed steels contain more than 10% of alloying elements. For example the alloy 20Х20Н14С2 has in its composition 12−15% nickel and 19−22% chromium. Manganese up to 1.5%, copper 0.3%, silicon 2−3%, carbon and titanium 0.2%, sulfur, and phosphorus are added to the blend as additives.
| Cu | Si | C | Mn | P | Cr | Ni | S | Ti | |
| ≤0,3 | 2−3 | ≤0,2 | ≤1,5 | ≤0,035 | 19−22 | 12−15 | ≤0,025 | ≤0,2 |
Heat-resistant grade 20Х25Н20С2 refers to highly alloyed iron-based alloys smelted in an induction furnace.
| Percentage composition according to GOST 5632−72 | |||||||||||||
| Grade | C | Si | Mo | V | Cr | Cu | Mn | Ni | Ti | W | S | P | Fe |
| 20Х25Н20С2 | ≤0,2 | 2−3 | ≤0,3 | ≤0,2 | 24−27 | ≤0,3 | ≤1,5 | 18−21 | ≤0,2 | ≤0,2 | 0,02 | 0,035 | Basis |
Stainless heat-resistant grade 12X25n16g7ar has in its composition of nickel 15−18%, chromium 23−26%.
Percentage composition of 12X25n16g7ar GOST 5632−72
| Mass fraction of components, % | |||||||||
| C | Si | Mn | Cr | Ni | N | B | S | P | Fe |
| ≤0,12 | ≤1,0 | 5,0−7,0 | 23−26 | 15−18 | 0,3−0,45 | ≤0,010 | ≤0,020 | ≤0,035 | Basis |
Applications
Unparalleled properties possessed by heat-resistant alloys have become one of the main reasons for their successful use in various fields of human activity. Jet technology would be unthinkable without special high-temperature alloys for gas turbine engines… Modern automotive engineering would be unthinkable without these high-temperature alloys. Chemical reactors, tanks, boilers and crucibles with high corrosion resistance are made of such alloys. Heat-resistant materials play the most important role not only in the structures of gas turbine engines, but also in the structures of nuclear boilers. Heat-resistant cladding is used to protect uranium rods from corrosion in nuclear reactors.
Supplier
Where can I buy heat-resistant steel? Supplier «Auremo» offers to buy heat resistant steel on favorable terms. Wholesale customers are offered a preferential price. Large selection at the warehouse of the supplier «Auremo», full compliance with GOST and international quality standards. Always in stock heat-resistant steel, the price — the best from the supplier. We are waiting for your orders.
Buy a bargain price.
Supplier «Auremo» offers on favorable terms to buy heat-resistant steel, the price — due to the technological features of production without the inclusion of additional costs. The company’s website displays the most up-to-date information. It is possible to buy products with non-standard parameters to order. The order price depends on the volume and additional terms of delivery. Supplier «Auremo» invites you to buy heat-resistant rolled products in bulk or in installments. We have the best price-quality ratio for the whole range of products. In this segment «Auremo» is a profitable supplier.
