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What is SUS 304 steel? Components of the chicken intestine pipe with 304 stainless steel core
by Jany Jany123 Web DesignerStainless steel, also known as stainless steel or white steel, is a type of steel that contains more than 11% chromium. It is this that gives them a self-protecting film against corrosion. Nickel is known as the main factor that brings stability to the austenitic phase and excellent machinability for stainless steel. In which , what is 304 stainless steel ? Why are there so many outstanding features?
Let's learn and discover what is stainless steel and 304 stainless steel with Hai Duong Supplies? What advantages and disadvantages do they have when compared to other popular stainless steels?
1, What is 304 stainless steel?
What is 304 stainless steel? 304 stainless steel is a stainless steel with a minimum Nickel content of 8%. They are the most commonly used and consumed stainless steel materials worldwide today. Among the elements that make up austenitic, there are many elements that can replace Nickel to provide corrosion resistance.
For example: Chromium (this is the main element that creates corrosion resistance for stainless steel); Manganese (also contributes to the stabilization of the Austenitic phase); Nitrogen also contributes to hardness; Copper (Cu) also contributes to the stabilization of the Austenitic phase.
2, Is the price of 304 stainless steel high?
Depending on each specific product such as: 304 stainless steel box, 304 stainless steel sheet , decorative or industrial 304 round stainless steel pipe, the price varies in specific times. But the price of sus 304 stainless steel will always be higher than normal stainless steel.Because of the continuous increase in the price of Nickel, the stainless steel lines contain low Nickel content; Low and stable prices give real appeal. Inox 201 is a suitable choice, stainless steel mark is gradually gaining more and more markets. And is the main choice because stainless steel 201 has a lower price and is more stable because it uses Manganese to replace Nickel.
3, What is a quick comparison of 304 stainless steel and 201 stainless steel?
Thanks to the similar composition, stainless steel 201 has the same appearance and properties as 304 stainless steel. In stainless steel 201, people use Manganese as the main element to replace Nickel in the ratio 2:1. We can see according to the chemical composition as follows:
SUS201: 4.5% Nickel and 7.1% Manganese
SUS304: 8.1% Nickel and 1% Manganese
With a composition like this, it has contributed to making the raw material cost of stainless steel 201 very low and this is an advantage.
Comparison of durability and machinability
The specific gravity of SAE 201 stainless steel is lower but 10% higher in strength than that of SAE 304 stainless steel. Due to the same elongation, grade 201 exhibits similar properties to 304 stainless steel in bending, forming and laminating processes. But to some extent, 304 stainless steel is still more malleable; When laminated, it will be easier and faster than 201. This is due to the influence of the element Manganese on 201, making stainless steel 201 harder than 304.
Corrosion resistance
When comparing the chemical composition (TPHH) of stainless steel 201 and 304, we see that the content of 201 is about 2% lower than 304 stainless steel. Because of this, stainless steel 201 has a lower corrosion resistance than 304.
Surface pitting resistance is mainly determined by two elements Chrome and Sulfur (S). Chrome helps increase corrosion resistance, while sulfur reduces corrosion resistance. In TPHH, these 2 stainless steels have the same composition of Luu Huynh. Therefore, the surface pitting resistance of stainless steel 201 is lower than that of 304.
304: stainless steel 304
4Ni: 201 stainless steel (201 stainless steel contains only about 4% Nickel)
The results are as shown above after people sprayed with salt water for 575 hours. Because of this, we see that stainless steel 201 is not suitable for the marine industry.
Grade 304L stainless steel is weaker than 304. So, why would anyone want to use it?
The answer is that 304L stainless steel's lower carbon content reduces or eliminates the amount of carbide precipitation during welding . That allows this grade of steel to be used in the "welded" state, even in severely corrosive environments. It can be seen that, if your project requires the use of a lot of welds, 304L steel will be a right choice. If you want more structural strength use 304 stainless steel.
4, Practical application of stainless steel
Let's learn the practical application of the 2 most popular steel grades today:
What is the suitable application of stainless steel 201?
Home kitchen equipment or industrial catering companies: such as pans, pots => Suitable
Washing machine, dishwasher -> Not suitable, due to the possibility of crevice corrosion)
Food processing equipment -> Not for use in places with pH < 3.
Chemical industry, petroleum, nuclear energy -> Impossible
Interior decoration -> suitable
In the exterior -> Not suitable, if used, it must be maintained regularly.
How to identify standard 304 stainless steel products?
On the market, there are 3 popular types of stainless steel materials: 304 (18/10: in the composition contains 18% chromium and 10% nickel), stainless steel 201 (18/8) and stainless steel 430 (18/0) . In which sus 304 stainless steel has high gloss, is relatively clean, does not rust, so the price is quite high. Stainless steel 201 has a lower percentage of nickel in its composition, stainless steel 430 contains more iron and other impurities.
Therefore, stainless steel 201 and 430 are easy to rust, low strength, unsafe, their cost is also much lower than 304 steel.
However, due to the high cost and the majority of running after profit. Many products now appear on the market with materials made of stainless steel 201 and stainless steel 430.
So how to distinguish which products use 304 stainless steel? What products use other materials? It's really hard to tell with the naked eye. If you test with a magnet, you can easily distinguish 430 stainless steel from the rest due to its very high magnetic absorption.
However, stainless steel 304 or 201 if the process of processing stainless steel with great pressure at normal temperature is to shape. For example, stamping to make a stainless steel sink for example. Then a part of the material organization transforms into Martensite form. At that time, the phenomenon of word contamination will appear (Vietnamese professional noun is called Tu Hoa).
This phenomenon does not appear in 316 stainless steel. In some products such as medical instruments, it is required that no magnetization occurs on the instrument. After machining, it must be heat treated at 770°C to lose magnetism.
5, Refer to the product line of 304 stainless steel coated chicken intestine pipes of Hai Duong Supplies
Ensuring safety at work is always a top priority in enterprises. Unfortunate incidents such as construction accidents, electrical accidents can happen if you are not careful. Electrical accidents are most likely to happen because we use electricity every day. To protect life as well as protect the power line from external agents, Hai Duong Supplies offers you 304 stainless steel cored chicken intestine pipes (ống ruột gà lõi thép bọc Inox 304) .
What is stainless steel coated chicken intestine pipe?
English name: Flexible Steel Conduit
Flexible pipes, also known as chicken intestine pipes, include : stainless steel-coated steel -core chicken intestines, pvc-coated steel-cored chicken intestines, and pvc chicken intestines.
This is a super durable and aesthetic conduit used in luxurious places, requiring high durability such as conferences, party centers ...
Characteristics of chicken intestine pipes covered with plastic coated stainless steel mesh:
– Protect the conductor from impact from sharp impacts and the bite of some animals.
– The outer shell is waterproof, oil-proof, tough and high-corrosion resistant PVC.
- 304 stainless steel sheath for corrosion resistance and high heat resistance.
The tight, flexible connection between the joints allows the pipe to bend easily without being damaged or torn.
Application of chicken intestine pipe with steel core covered with plastic coated stainless steel mesh:
- Can be used in indoor and outdoor areas.
- 304 stainless steel core chicken intestine pipe is fire resistant, can be installed in high temperature areas and even in wet areas.
-Stainless steel coated chicken intestine is also used to thread electrical wires for equipment with high vibration and impact.
– Flexible conduit is also installed in places where rigid conduit cannot be bent.
Contact Hai Duong Supplies for the most detailed quotation and advice
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About Jany Jany123 
Web Designer
23 connections, 2 recommendations, 112 honor points.Joined APSense since, August 23rd, 2022, From Hà Nội, Vietnam.
Created on Sep 26th 2022 12:15. Viewed 176 times.
