Where is the best quality of 304 stainless steel strips?

Our company is located in Foshan, Guangdong, a famous stainless steel distribution center in the country, operating a number of enterprises: Foshan Zhuocheng Yongye Metal, Foshan Zhuocheng Stainless Steel Rolling Factory, Foshan Jiajiawang Hardware Products Factory, is a collection of production, sales integration of stainless steel enterprises, its own cold rolling, slitting, welded pipe, frosting, polishing and other stainless steel production lines.

Main business: stainless steel calendered coil, flat plate, pipe making materials, product materials, stainless steel pipes.

Our company can customize all kinds of stainless steel coils, flat plates, steel pipes, material 201, thickness and width of 8mm-1240mm, machinable surface frosting, wire drawing, polishing, BA, mirror, etc.

My username is Contact**.

It's hard to say, but generally speaking, imported ones are good. The quality of this thing for different industries will be different, if only the national standard, TISCO is good. But you also know that our country's brand-name products are genuine, if you want to be opportunistic, it is best to take the market, as long as the material is guaranteed, the thickness, it is necessary to calculate according to the theoretical amount, anyway, the thinner the negative difference, the more processing benefits can be reflected.

So *** bad must be combined with your use.

Generally speaking, it is Wenzhou and Jiangsu Didi District Didi!

304 is better, it is used more.

304 stainless steel.

It is the austenitic stainless steel with a large amount of application and the most widely used.

It is suitable for the manufacture of deep-drawn molded parts and acid pipes, containers, structural parts, various instrument bodies, etc., and can also manufacture non-magnetic, low-temperature set up and components.

304 is a versatile, widely used stainless steel material.

It is widely used in the manufacture of equipment and parts that require good comprehensive properties (corrosion resistance and formability). It can withstand general rust in construction and can resist the erosion of food processing media (but the wheel type contains concentrated acids and chlorides.

Corrosion may occur at high temperatures of the ingredients), and it is resistant to organic compounds, dyes, and a wide variety of inorganic compounds.

1. Austenitic stainless steel.

The matrix is dominated by an austenite structure (cy-phase) with a face-centered cubic crystal structure, which is non-magnetic, and is mainly strengthened by cold working (and may lead to a certain magnetism) of stainless steel. The American Iron and Steel Institute is numbered with the 200 and 300 series, such as the 304.

2. Martensitic stainless steel.

If it is a martensitic structure (body-centered cubic or cubic), it is magnetic, and its mechanical properties can be adjusted by heat treatment.

of stainless steel. The American Iron and Steel Institute is marked by numbers 410, 420 and 440. Martensite has an austenitic structure at high temperatures, and when cooled to room temperature at the appropriate rate, the austenite structure is able to transform into martensite (i.e., hardened).

Summary. Hello, dear, the content of my service for you is a little better than high-quality stainless steel. High-quality stainless steel is 321 material, which is different from 304 in that titanium is added, which has better resistance to grain boundary corrosion and high temperature strength than 304, which can effectively control chromium carbide.

It is more suitable for wear-resistant acid containers, transportation pipelines, etc., and is relatively expensive.

Which is better, high-quality stainless steel or 304.

Hello, dear, the content of my service for you is a little better than high-quality stainless steel. High-quality stainless steel is 321 material, which is different from 304 in that titanium is added, which has better resistance to grain boundary corrosion and high temperature strength than 304, which can effectively control chromium carbide. It is more suitable for wear-resistant acid containers, transportation pipelines, etc., and is relatively expensive.

Is the tea bar pot good quality?

Hello, I'll add to you that if you are using it to make food grade, then choose 304, and you can use 304 for the teapot handle. 304 has good anti-corrosion and anti-rust performance, good processing performance, and meets quality requirements, and 304 is good anti-corrosion performance, suitable for indoor food grade use.

Pro, if it is used for industrial use, it is better to have high-quality stainless steel. Food grade with 304 oh pro. Stable and safe, <>

Is the good quality of the tea bar pot harmful to the body?

Dear, long-term use will be harmful.

It is recommended that you use food-grade 304 stainless steel<>

316 stainless steel is even better.

1.From a corrosion point of view: 316 is more corrosion resistant.

The corrosion resistance of 304 stainless steel is fully in line with the food grade standard, and it is also a food grade stainless steel certified by the state.

The corrosion resistance of 316 stainless steel is stronger than that of 304 stainless steelIt can also be said that 316 stainless steel is a higher level of food grade stainless steel than 304 stainless steel, and it is no problem to choose 316 stainless steel for stainless steel products in daily life, and the sense of use will be better.

2.From the point of view: 316 stainless steel is more expensive.

316 stainless steel products are higher than 304 stainless steel products, but they also feel better to use.

Personally, I think that the use of stainless steel products is very demanding, you can choose 316 stainless steel products, and you can choose 304 stainless steel products if you don't have high requirements for its use experience.

Many stainless steel products in daily life are used for cooking and drinking, which directly affects our health. Today, the use of stainless steel has become very popular, including some areas that people have not considered, and there are also shades of stainless steel.

304 and 316 Knowledge Popularization:

Stainless steel

304 stainless steel is actually the type of stainless steel we use the most today. The common stainless steel bowls, stainless steel spoons, and stainless steel cups in our lives are almost all made of 304 stainless steel. As we all knowStainless steel is generally made of iron as the main component, and then add some metal elements such as carbon, nickel, and chromium.

The quality of stainless steel is generally determined by the content of these rare metals.

Stainless steel 304 must contain 18% chromium and 8% nickel to meet the standard, which is often referred to as food-grade stainless steel. This grade of stainless steel is more exposed to acids and alkalis, so it has good resistance to acids and alkalis, and it is dense and looks good when polished.

Stainless steel

Why is 316 stainless steel so much more expensive than 304 stainless steel? Those who don't know may have doubts. This is actually because of the fact that 316 stainless steel is compared to 304It contains a rare metal called molybdenum (Mo).

This metallic element makes 316 stainless steel more corrosion-resistant than 304. That's why it's used in food processing, machinery, heavy industry, etc., or in the manufacture of parts in high-temperature environments.

Personal advice:

If it is used in ordinary households, such as those pots and pans, you can use 304 to meet the use. If the economy is relatively wealthy, not bad money, the pursuit of better enjoyment requirements, directly buy 316 stainless steel products, after all, you get what you pay for.

Among the stainless steel models of the national standard, there is no 306 stainless steel...

The national standard stainless steel grades are grouped as follows:

200 series - chromium-nickel-manganese.

Austenitic stainless steel.

300 Series - Chromium-Nickel.

Austenitic stainless steel.

Model 301 – Good ductility for molded products. It can also be quickly hardened by machining. Good weldability. The wear resistance and fatigue strength are better than those of 304 stainless steel.

Model 302 - corrosion resistance is the same as 304, because the carbon content is relatively high, so the strength is better.

Model 303 – By adding a small amount of sulfur and phosphorus, it is easier to cut than 304.

Model 304—general model; i.e. 18-8 stainless steel. The GB grade is 0Cr18Ni9.

Model 309—Better temperature resistance than 304.

Type 316 - after 304, the second most widely used steel grade, mainly used in the food industry and surgical equipment, the addition of molybdenum element to obtain a special corrosion-resistant structure. Because it has better resistance to chloride corrosion than 304, it is also used as "marine steel". SS316 is commonly used in nuclear fuel** installations.

18 grade 10 stainless steel is also generally suitable for this application class. [1]

Model 321—Similar to 304 except that the addition of titanium reduces the risk of corrosion in the weld seam of the material.

400 Series – Ferritic and martensitic stainless steels.

Model 408—Good heat resistance, weak corrosion resistance, 11% CR, 8% NI.

Model 409 – the cheapest model (Anglo-American), commonly used as a car exhaust pipe, is a ferritic stainless steel (chromium steel).

Model 410 - martensitic (high-strength chromium steel), good wear resistance, poor corrosion resistance.

Model 416—Sulfur is added to improve the processability of the material.

Type 420 – "Cutting tool grade" martensitic steel, the earliest stainless steel similar to Brinell high-chromium steel. It is also used for surgical knives and can be made very bright.

Type 430 – ferritic stainless steel, decorative, e.g. for automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.

Model 440 – High strength cutting tool steel, slightly higher carbon content, high yield strength after proper heat treatment, hardness up to 58HRC, one of the hardest stainless steels. The most common example of an application is a "razor blade". There are three commonly used models:

440A, 440B, 440C, and 440F (easy to process).

500 Series – Heat-resistant chromium alloy steel.

600 Series – Martensitic precipitation hardening stainless steel.

Model 630 - the most commonly used precipitation hardening stainless steel model, also commonly called 17-4; 17%cr，4%ni。

304 and 316 are the classification of stainless steel, there is no difference in nature, they are all stainless steel, but there is still a difference in subdivision, the quality of 316 is higher than the quality of 304, 316 steel is added to MO on the basis of 304, this element greatly improves the corrosion and wear resistance of stainless steel. First of all, 304 stainless steel has good processing performance, high toughness, high density, polishing without bubbles, acid resistance, alkali resistance, etc., 304 stainless steel is widely used in industrial and home decoration industries and food and medical industries. The kitchen utensils we use in our daily life, such as pots and pans, and cups, are basically 304; 316 stainless steel corrosion resistance, atmospheric corrosion resistance and high temperature strength are better, 316 stainless steel is used in seawater equipment, chemicals, dyes, papermaking, oxalic acid, fertilizer and other production equipment, photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts, if used in the food field is a bit of a luxury.

Secondly, the density of 304 stainless steel is the density of stainless steel, and furthermore, we, as consumers, are more concerned about our own consumption in the market, whether it is spent 316 money to buy 304 appliances, or 304 money to buy 304 appliances? This is a question worth pondering. First, it can be distinguished by the grade, and the corresponding element formula of 304 stainless steel is 06CR19NI10; The corresponding elemental formula of 316 stainless steel is OCR17Ni12Mo2.

The second is that we can distinguish it by the stainless steel potion, and it will be natural to see it by dropping a drop, but this method is not very practical, you can't take the potion to buy tableware, and the potion is also corrosive to the tableware, or many pot friends say that you can use a magnet to suck it, 304 stainless steel magnets can't be sucked, this is also a method, but this method is a bit inaccurate, and the credibility is not high. In fact, when we buy tableware as consumers, we don't have to pay too much attention to whether it is 304 or 316, because the performance of 304 has been able to fully meet the performance of our tableware, so if you go to buy, as long as you can spend 304 ** to buy the tableware you want, it is worth it, if the manufacturer sells at a high price, then you have to think about it. I once bought a very good 304 stainless steel sink, and after a few years of use, it began to rust, and I seriously suspected that it was a quality problem.

In fact, such a view is very one-sided. Generally speaking, stainless steel is steel that is not easy to rust, and the principle is to add Ni elements, CR elements, MO elements and so on. The two main properties of stainless steel are stainless steel and acid and corrosion resistance, which are due to the formation of a very thin, strong and fine stable chromium-rich oxide film (passivation film) on its surface.

This kind of rust and acid corrosion resistance is also relative, the test shows that the corrosion resistance of steel in the atmosphere, water and other weak media and nitric acid and other oxidizing media, its corrosion resistance increases with the increase of chromium content in steel, when the chromium content reaches a certain percentage, the corrosion resistance of steel undergoes a sudden change, that is, from easy rust to not easy to rust, from non-corrosion resistance to corrosion resistance.

The quality of 316 stainless steel is a little better than that of 304 stainless steel, because 316 stainless steel is integrated with molybdenum metal on the basis of 304, which can further consolidate the molecular structure of stainless steel, make it more wear-resistant and oxidation-resistant, and at the same time greatly increase the corrosion resistance.

In addition, the biggest difference between 304 and 316 stainless steel is the application of the market, 304 stainless steel is usually used in daily life, kettles, chopsticks and so on. Although 316 stainless steel will be used in daily life, most of it is still used in medical or heavy industrial equipment.