Accurate Metals and Alloys is a name that resonates with perfection and superior high-class quality when it comes to manufacturing as well as distributing the stainless steel 439 plates along with other different stainless steel products. The guidelines and the procedures for accomplishing a successful production and supply of the products are strictly adhered to without any exceptions.
The stainless steel plates belonging to the 439 grade are columbium stabilized ferritic alloy. The physical microstructure contributes to the ductility and the resistance the plates display against stress cracking. Chemically, the plates are comprised majorly of chromium, nickel, and iron, all of which contribute to the stability and the physical properties of the alloy. A distinct chemical addition is the incorporation of titanium, niobium, and molybdenum. Titanium is known to grant the plates additional protection against intergranular corrosion caused by the formation of carbide precipitation. The columbium stabilization of the alloys accounts for the strength they display at higher temperatures while retaining their stability. The integration of molybdenum on the other hand increases the resistance manifested by the plates in the presence of chloride ions.
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Composed of a number of properties, the 439-grade stainless steel plates are distinctly renowned for the developed corrosion resistance they exhibit. The resistance which the plates possess is not just around mildly corrosive environments such as water but is also useful in defending the plate against the damaging action of chloride ions. Along with chloride ions, oxygen in the environment can also prove to be fatal for the alloy plates, and therefore, to prevent undergoing oxidation, the plates come with resistance against oxidation itself. Weldability and formability are other two important features of the 439 plates that come in handy while operating in stressful conditions characterized by elevated temperatures.
The mechanical and chemical stability accompanied by the diverse range of properties, allow the stainless steel 439 plates to be employed in the automotive exhaust systems, catering equipment, tubular manifolds, rail cars, construction material, etc.
Keeping in mind the importance of good quality, the products we manufacture are subjected to inspections and tests that help us distinguish between the products which have retained their quality and one which has to be replaced by a good quality product. After satisfactorily testing all the products, the products which passed all the tests are shipped while the ones which proved to be defective are replaced by better quality products.
2B, 2D, BA NO (8), Cold rolled Plate (CR), Hot rolled Plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc.
|Tensile strength (annealed)||438 MPa||63500 psi|
|Yield strength (annealed/ @strain 0.200 %)||263 MPa||38100 psi|
|Modulus of elasticity||GPa||ksi|
|Poisson’s ratio||0.270 – 0.290||0.270 – 0.290|
|Elongation at break (In 2″, 50% cold worked)||2.80%||2.80%|
|Hardness, Rockwell B (annealed)||72.9||72.9|