What is OCr19NilONbN stainless steel? 

OCr19NilONbN is a GB standard stainless steel grade, and its corresponding American grade is XM21. OCr19NilONbN adds N and Nb to 304 steel, so that it can increase the strength while suppressing the decline in elongation performance, and has the effect of reducing the thickness of the material, etc. and SUS304N1 same performance. The use of OCr19NilONbN stainless steel is the same as that of SUS304N1 steel.

What are the characteristics of OCr19NilONbN stainless steel?

OCr19NilONbN stainless steel is an alloy of chromium, nickel and iron used in many applications such as tank linings and cookware. Its low carbon content provides excellent performance at high temperatures, and it is known for its strength, corrosion resistance and heat resistance, and is used in a variety of industries from aerospace to automotive. making it ideal for multiple uses.

OCr19NilONbN stainless steel has good formability, weldability and good thermal conductivity, making it suitable for high temperature applications. The combination of chromium and nickel gives OCr19NilONbN stainless steel excellent resistance to general corrosion and stress corrosion cracking. With these properties, this type of stainless steel can be used with confidence in many different industries and for a long time.

What is the chemical composition of OCr19NilONbN stainless steel?

OCr19NilONbN stainless steel is a niobium-containing austenitic chromium-nickel-molybdenum stainless steel. The addition of niobium improves corrosion resistance in oxidizing and reducing media compared to other austenitic stainless steels such as 304 and 316L. The alloy has good ductility and can be cold worked by all standard methods. It cannot be hardened by heat treatment, but can be hardened by cold working.

The chemical composition of XM21 is as follows:

Carbon C: ≤0.08

Manganese Mn: ≤2.00

Silicon Si: ≤0.75

Chromium Cr: 18.0~20.0

Nickel Ni: 8.0~10.5

Phosphorus P: ≤0.045

Sulfur S: ≤0.03

Nitrogen N: 0.10~0.16

What are the physical properties of OCr19NilONbN stainless steel?

OCrNilONbN stainless steel is a high chromium, nickel-based austenitic alloy with excellent resistance to oxidation and corrosion. The addition of niobium improves microstructural stability and toughness, while rare earth metals increase resistance to pitting and crevice corrosion. The alloy has good weldability and formability and is suitable for use in high temperature environments.

The mechanical properties of XM21 stainless steel are as follows:

Tensile strength: ≥550 MPa

Yield strength: ≥275MPa

Elongation ≥ 35%

Reduction of area ≥ 50%

What are the physical characteristics of 304N stainless steel? 

Hardness: ≤217HB

Heat treatment specifications: solid solution 1010~1150 ℃ rapid cooling

Metallographic structure: the structure is characterized by austenite

Delivery state: generally delivered in heat treatment state

What is the welding of OCr19NilONbN stainless steel?

Welding of OCrNilONbN stainless steel can be done using any standard welding process. The most commonly used processes are shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). The weld metal has good corrosion resistance and mechanical properties. It is important to note that the weld metal may have a slightly different composition than the parent metal, which can affect its corrosion resistance.

How about the heat treatment of OCr19NilONbN stainless steel?

Heat treatment of OCrNilONbN stainless steels is very important to obtain the desired properties. The following parameters must be controlled during heat treatment:

-temperature

-time

-atmosphere

The most common heat treatment process for this type of stainless steel is annealing. This involves heating the material to a high temperature and then cooling it slowly. Other processes such as quenching and tempering can also be used to achieve the desired properties.

What are the applications of OCr19NilONbN stainless steel?

OCR19NilONbN stainless steel is an austenitic chromium-nickel-molybdenum alloy offering an excellent combination of corrosion resistance, pitting resistance and strength. High levels of chromium, nickel and molybdenum give the alloy excellent corrosion resistance in a wide variety of media, including chloride-containing environments. The addition of niobium increases the strength and toughness of the alloy and makes it resistant to sensitization during welding. OCR19NilONbN stainless steel is used in a variety of applications requiring excellent corrosion resistance and strength, such as chemical processing equipment, offshore oil and gas production equipment, flue gas desulfurization scrubbers, and paper mill digesters.

OCr19NilONbN is a stainless steel with excellent resistance to intergranular corrosion. It also has the following functions with its excellent weldability and formability:

- Car exhaust system

- chemical processing equipment

- Food processing equipment

- Generic containers and pipes

How to make OCr19NilONbN last longer? 

When stainless steel is processed as a building material, it will protect the surface from processing damage. Generally, a film such as a plastic skin is pasted on the surface of the stainless steel for protection. When our manufacturers ship out the products, they also add surface protection films to match the purpose. These films can be easily torn off, and there will be no blurred marks on the surface of the products. When packing the final products, try not to tear the protective film. For these protected products, it is best to work on a soft bench such as a wooden bench.

When the processed finished product is transported to the site, it must be bundled first. Bundling is generally carried out in the factory, and depending on the size, shape, and delivery method of the product, protective measures such as cardboard and plastic boards are implemented, and wooden frames are also used.