How can you tell between austenitic stainless steel and ferritic stainless steel?

Ferritic stainless steel is magnetic and can be absorbed with magnets; Austenitic stainless steel is non-magnetic due to its high nickel content, and it cannot be absorbed with magnetstones, and it is also more expensive. Therefore, generally speaking, the quality of stainless steel that cannot be sucked by magnets is better. Hope it helps.

If you don't look at the grade, one is to use a slice of steel and observe it under a microscope, where F is the body-centered cubic lattice structure, and A is the face-centered cubic lattice; The second is to carry out a hardness test, and the hardness of A is a little higher than that of F. By the way, F is a gap solid solution formed by C dissolved in -Fe, the lattice gap is small, the carbon dissolving ability is poor, and at 727 c = it drops at room temperature, because the carbon dissolving ability of F is poor, the amount of carbon dissolved is small, so the mechanical properties are similar to pure iron, the plasticity and toughness are good, and the strength and hardness are low; A is a solid solution formed by carbon dissolved in -fe, the lattice gap is large, the ability to dissolve carbon is strong, 727, c=, 1148, c= has high strength, hardness, and good plasticity, that is, the comprehensive mechanical properties are good, and it is an ideal material for pressure processing at high temperature of most steels.

This is directly based on the brand, more contact, more use, you know which is A stainless steel, which is F stainless steel, which is M stainless steel.

Summary. Austenitic stainless steel: Austenitic stainless steel is the most important class of stainless steels, accounting for 70% of the total amount of stainless steel.

According to the alloying method, austenitic stainless steel can be divided into two categories: chromium-nickel steel and iron-chromium-manganese steel. The former uses nickel as the austenitizing element and is the main body of austenitic steel; The latter is a nickel-saving steel grade that replaces expensive nickel with manganese and nitrogen. In general, austenitic steel has good corrosion resistance and good comprehensive mechanical properties and process properties.

Ferritic stainless steel: ferritic stainless steel contains 11%-30% chromium, basically nickel-free, nickel-saving steel, and the organizational structure is mainly ferrite in the use state. Ferritic stainless steel has high strength, low tendency to cold work hardening, and excellent resistance to local corrosion such as chloride stress corrosion, pitting corrosion, crevice corrosion, etc., but is sensitive to intergranular corrosion and poor low-temperature toughness.

Hello, austenitic stainless steel and ferritic stainless steel, austenitic stainless steel is good.

Austenitic stainless steel: Austenitic stainless steel is the most important class of stainless steels, accounting for 70% of the total amount of stainless steel. According to the alloying method, austenitic stainless steel can be divided into two categories: chromium-nickel steel and iron-chromium-manganese steel.

The former uses nickel as the austenitizing element and is the main body of austenitic steel; The latter is a nickel-saving steel grade that replaces expensive nickel with manganese and nitrogen. In general, austenitic steel has good corrosion resistance and good comprehensive mechanical properties and process properties. Ferritic stainless steel:

Ferritic stainless steel contains 11%-30% chromium, basically nickel-free, is nickel-saving steel, and the organizational structure is mainly ferrite in the use state. Ferritic stainless steel has high strength, low tendency to cold work hardening, and excellent resistance to local corrosion such as chloride stress corrosion, pitting corrosion, crevice corrosion, etc., but is sensitive to intergranular corrosion and poor low-temperature toughness.

Summary. 1.Both ferritic and austenitic stainless steels have been carefully crafted to withstand high temperatures, harsh environments, and chemical corrosion, making them safe materials.

2.However, ferritic stainless steels are safer than austenitic stainless steels due to their higher toughness, greater impact resistance, and better ability to withstand pressure. 3.

In addition, ferritic stainless steel also has higher corrosion and wear resistance, so it is also more safe and reliable in some special environments. 4.Overall, ferritic stainless steel is safer than austenitic stainless steel because it has higher toughness, impact resistance, and corrosion resistance, is better able to withstand pressure, and is suitable for use in harsh environments.

Can you tell us more about that?

1.Both ferritic and austenitic stainless steels have been carefully crafted to withstand high temperatures, harsh environments, and chemical corrosion, making them safe materials. 2.

However, ferritic stainless steels are safer than austenitic stainless steels due to their higher toughness, greater impact resistance, and better ability to withstand pressure. 3.In addition, ferritic stainless steel also has higher corrosion and wear resistance, so it is also more safe and reliable in some special environments.

4.Overall, ferritic stainless steel is safer than austenitic stainless steel because it has higher toughness, impact resistance, and corrosion resistance, is better able to withstand pressure, and is suitable for use in harsh environments.

Austenitic stainless steel is 304.

Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. Has a stable austenitic structure. Austenitic chromium-nickel stainless steels include the well-known 18Cr-8Ni steel and the high Cr-Ni series steel developed by adding Cr and Ni content and adding elements such as Mo, Cu, Si, Nb, and Ti.

Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but the strength is low, it is impossible to strengthen it by phase change, and can only be strengthened by cold working, such as adding S, CA, SE, TE and other elements, it has good machinability. In addition to being resistant to corrosion by oxidizing acid media, this type of steel can also resist the corrosion of sulfuric acid, phosphoric acid, formic acid, acetic acid, urea, etc. if it contains elements such as MO and Cu. If the carbon content in this type of steel is less than 0.03% or contains Ti and Ni, its resistance to intergranular corrosion can be significantly improved.

The high-silicon austenitic stainless steel has good corrosion resistance to concentrated nitric acid. Due to its comprehensive and good comprehensive properties, austenitic stainless steel has gained a wide range of applications in various industries.

Some countries have also developed nickel-free ferritic stainless steels.

The microstructure of this type of stainless steel is composed of a crystalline called ferrite in metallurgy, so it is named ferritic stainless steel.

Sumitomo Japan. Nickel-free ferritic stainless steels with no chromium of 17 or less are developed by Metals & Metals to outperform commonly used nickel-chromium stainless steels in terms of processability and surface quality. Because it contains copper, it greatly improves the corrosion resistance of the balance and rot front cleaning, and is suitable for manufacturing products such as bathtubs, automobile lining plates, window frames, etc., which require beautiful and corrosion resistance.

Austenite is a laminar microstructure of steel, and martensitic is the name of a structure of ferrous metal materials.

Austenite Martensite distinctions are as follows:

Composition. 1. Austenite is generally composed of equiaxed polygonal grains with twin crystals in the grains.

2. There are two types of martensitic tissue. Medium and low carbon steel quenching to obtain lath-shaped martensite, which is composed of many thin slats of roughly the same size and approximately parallel arrangement, and the angle between each bundle of slats is relatively large; High-carbon steel is quenched to obtain acicular martensite, which is in the form of bamboo leaves or convex lenses.