![]() These can then be removed during the magnet cleaning operation. Depending upon their weight and specifically their weight ratio to magnetic attraction, these small particles will be held to the magnets during the production process. As a result of these properties, small particles (approx < 0.5mm dia sphere for example) can be attracted to powerful magnetic separators positioned in the product stream. Practical implications for removal of stainless steel particlesīoth 304 and 316 stainless steel possess paramagnetic characteristics. ![]() Within the allowed ranges of variation of Ni and Cr, significant differences in magnetic properties may be observed for a given alloy. To complicate matters further, the magnetic properties of these alloys depend on the alloy composition. It is also possible for austenite to spontaneously convert to martensite at low temperatures. These processes include cold working and welding. Any process which can change the crystal structure of stainless steel can cause austenite to be converted to the ferromagnetic martensite or ferrite forms of iron. However, this does not mean that you should expect to measure such a low susceptibility on any item of 304 or 316 stainless steel that you encounter. This corresponds to a somewhat larger magnetic susceptibility than we might expect for other nonmagnetic materials, but is still well below what might be considered magnetic. The presence of nickel in the stainless steel alloys stabilizes austenite against this phase transition as the alloy cools to room temperature. In other alloys of steel, this high-temperature phase of iron transforms to a magnetic phase when the metal cools. The different phases of solid iron correspond to different crystal structures. Transformation from non-magnetic to magnetic phasesĪs both 316 and 304 stainless steels are austenitic, when they cool, the iron remains in the form of austenite (gamma iron), a phase of iron which is nonmagnetic. It also contains a number of other elements in varying concentrations. The fact that it is also negligibly responsive to magnetic fields means that it can be used in applications where a non-magnetic metal is required. It also contains 18 – 20% chromium and 8-10.50% nickel, and lesser quantities of some other elements.ģ16 stainless steel is a molybdenum-alloyed steel. ![]() It is an austenite steel and is only slightly responsive to magnetic fields. It is the nickel which modifies the physical structure of the steel and makes it theoretically non-magnetic.ģ04 stainless steel contains chromium (min. However, the most common stainless steels are ‘austenitic’ – these have a higher chromium content and nickel is also added. A basic stainless steel has a ‘ferritic’ structure and is magnetic, formed from the addition of chromium – it can be hardened through the addition of carbon, making it ‘martensitic’. The magnetic properties of stainless steel are very dependent on the elements added into the alloy. There are several families of stainless steels with different physical properties. Magnetic and non-Magnetic Stainless Steel What is the difference between the magnetic properties of 304 and 316 stainless steel? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |