1.4521 - aisi 444 pipe, wire, circle
Supplier — AvekGlob Company — offers at various prices from the manufacturer various bulk metal products — pipes, wires or wheels, which are made of AISI 444 stainless steel (1.4541). The supplier guarantees timely delivery of metal products to any address specified by the customer.
Stainless steel grade AISI 444 (1.4541) is a low-carbon chromium-containing steel of the ferritic double-stabilization class, which is distinguished by the presence of molybdenum. Due to alloying with molybdenum and a rather high content of chromium, steel has excellent corrosion properties with increased mechanical strength. Stabilization is performed using titanium and niobium. At the same time, the plasticity of the material increases. High corrosion resistance is maintained up to temperatures of 310… 320 0 С.
Urgency of application
The above properties make AISI 444 stainless steel (1.4541) the optimum material for the manufacture of heat exchangers, boilers and water heaters. This variety can also be used in pipes for tap water and in other similar applications (for example, in solar water heaters). It is characteristic that the water pipes made from the steel of the brands in question are approved for the transportation of drinking water by the relevant sanitary inspectorates of Germany and Switzerland.
The composition of steel grade AISI 444 (1.4541), according to the technical standards ASTM 444, includes the following elements (iron — base):
Carbon — no more than 0.025%;
Chrome — 17… 20%;
Molybdenum — 1.8… 2.5%;
Manganese — no more than 1%;
Titanium — up to 0,20%;
Niobium — 0.2… 0.8%;
Silicon — no more than 1%;
Phosphorus — not more than 0.045%;
Bound nitrogen is not more than 0.03%;
Sulfur — no more than 0,015%.
In the composition of steels, up to 1.0% nickel is allowed.
Physical and mechanical properties
Density, kg / m 3 — 7700;
Melting point, 0 C -1460;
The coefficient of thermal conductivity, in the temperature range 20… 100 0 С, W / mgrad — 23;
Specific heat capacity, J / kggrad — 480;
Modulus of elasticity, GPa — 200;
The coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 10;
The limit of time resistance, MPa — 520;
Yield strength, MPa — 280… 340;
Hardness according to Brinell, HB, no more than 200;
Relative elongation at tension,% — 23;
Technological features of processing and assortment
Stainless steel AISI 444 (1.4541) is available in a wide range of rolling profiles and forgings, while bulk rolling is available in both cold-drawn and annealed conditions. Steel is characterized by high ductility in the cold state, and low intensity of strain hardening. Weldability of steels is good, but in the weld zone, grain growth is possible, which is eliminated by subsequent annealing.
Supplier — the company AvekGlob — offers to buy a pipe, wire or a circle, which are made of stainless steel AISI 444 (1.4541) at a price formed on the basis of European and world standards of production. Buy these products can be wholesale and retail. For regular customers, there is a flexible system of discounts.