Stands for American Iron and Steel Institute. The institute serves as the voice of the North American steel industry. AISI numbers are used to categorize metals by alloy type and carbon content, and they do it with four digits. The first two digits of an AISI number refer to the alloy type, and the second two digits refer to carbon content.
If you are looking for more details, kindly visit HWHG.
A metal made by combining two or more metallic elements. An alloy typically possesses qualities different from those of the components used to create it.
Stands for American Society for Metals. ASM International is the world’s largest association of metal material engineers and scientists. The association engages and connects materials professionals and their organizations to the resources necessary to solve problems, improve outcomes, and advance society.
Stands for American Society for Testing and Materials. ASTM International is a not-for-profit organization that develops standards for materials, products, systems, and services. Metal with an ASTM designation meets the international standards for quality and regulations.
This process levels coil into a flat sheet or blank. The service provides better length and width tolerances than sheared product, and it can improve diagonal tolerances as well.
Cutting metals can leave behind burrs, which are unwanted raised edges or protrusions. Deburring is the process of removing these burrs with a tool.
Drawing is a metalworking process that uses tensile forces to stretch metal. As the metal is drawn, it stretches thinner, into a desired shape and thickness.
Drawing is usually done at room temperature, classifying it as a cold working process. However, it may be performed at elevated temperatures during special applications like on large wires, rods, or hollow sections in order to reduce forces.
A metal fabricating term that refers to the degree to which a material can be bent, stretched, or compressed before rupturing. A metal’s elongation is a point between tensile strength and yield strength, and it is typically expressed as a percentage of the original length.
The thickness of sheet metal in the USA is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal.
A heat number is an identification number that is stamped on a material plate to prove it meets industry quality standards which require materials to be tested by the manufacturer. The heat lot or heat number is used to identify production runs for quality control purposes.
Edge rolling is the process of adding finishing edges to metal. It forms the edge of a strip to the desired shape beyond that of a standard slit edge.
Stands for Military Standard. This classification establishes uniform engineering and technical requirements for military-unique or substantially modified commercial processes, procedures, practices, and methods. In order to qualify, materials have undergone rugged, exact testing, equal to the exigencies of combat use.
Normalization is a heat treatment that relieves stress on steel to improve ductility and toughness in steel that may harden after the cold working process. During normalization, steel is warmed to a temperature just above its upper critical point. Normalized heat treatment facilitates a more uniform final product.
The Rockwell Scale indicates the hardness of materials. Rockwell hardness numbers are most often used to describe the hardness of metals, although they are also used for some plastics. The Rockwell scale is based on measuring the depth of the indentation made by pressing a diamond point into a material.
Stands for Society of Automotive Engineers. SAE International is a global association of engineers and related technical experts in the aerospace, automotive, and commercial-vehicle industries. Materials meeting SAE standards are internationally recognized for safety, quality, and effectiveness.
Slitting is a precise shearing process, but instead of making cuts at the end of a workpiece like shearing, slitting cuts a wide coil of metal into a number of narrower coils as the main coil is moved through the slitter. During the slitting process, the metal coil passes lengthwise through the slitter’s circular blades.
Temper refers to reheating hardened, normalized, or mechanically worked steel to a temperature below the critical range to soften it and improve impact strength. Tempering results in greater toughness by decreasing an alloy’s hardness.
The maximum stress a material will withstand before fracturing or breaking. The ultimate tensile strength is calculated from the maximum load applied during the test, divided by the original cross-sectional area.
Stands for the Unified Numbering System for Metals and Alloys. UNS designation provides a means of correlating internationally used metal and alloy numbering systems currently administered by societies, trade associations, and those individual users and producers of metals and alloys. This system is meant to avoid the confusion caused by using more than one identification number for the same metal or alloy, and the opposite situation of having the same number assigned to two or more different metals or alloys.
The amount of stress a material can withstand before causing permanent deformity.
As an importer, your first step to success is to choose the right products for resale.
In most cases, choose products that you would buy or know a lot about.
Take the stainless steel coil as an example, there are various types of stainless steel for uses in different applications. So, there are different specific requirements for detailed situations.
Know more about the types and grades of stainless steel later in this article.
And also read about the finish treatment of stainless steel.
You’d better know all the details. The reason is obvious because your products will affect your marketing, your profit margins, etc.
Make sure there’s a market for your products. Besides, you should know roughly the cost and profits.
We suggest you go with:
Attention:
You’d better not pursue ‘cheap’ products with excellent quality because there is no ‘perfect product’.
Austenitic stainless steel remains the most common types of stainless steels. They have much more nickel content compared with other types of stainless steels.
As well, they also contain higher amounts of molybdenum, nitrogen and chromium among the members in the stainless steel family.
Austenitic stainless steels get their fame by their excellent weld-ability and malleability.
That’s why you can easily find them in the products for kitchen cutlery and storage components.
Also, the materials receive a bunch of credit for their outstanding strength capabilities. Plus, they have great anti-corrosion performance, which enables their versatile applications in an environment with corrosive elements. Typically, 304 stainless steel and 316 stainless steel as you might have heard.
To talk about the downside of austenitic stainless steels is their expensive price. Meanwhile, the prices come with excellent quality.
Fortunately, you can always find a competitive price if you buy stainless steel coil from China, as we talked earlier.
This type of stainless steel comes with low but still some amounts of carbon.
The carbon in ferritic stainless steel does not exceed 0.10% in most cases though.
The material mainly consists of chromium while other elements are common to see as additions such as molybdenum. Unlike most Austenitic stainless steel, Ferritic stainless steel is magnetic.
If you want to learn more, please visit our website Stainless Steel Coil Supplier.
Still, you can find their footprints in many applications thanks to their resistance to stress corrosion cracking.
As a result, many manufacturers use them for kitchen cookware, car components, and other industrial products. Situations with potentials to contact with corrosive matters.
430 stainless steel and 434 stainless steel are the common members of the Ferritic stainless steel family.
And it’s not very difficult to buy stainless steel coil from China with these 2 types of materials.
Duplex stainless steel is a species stronger than ferritic stainless steel and austenitic stainless steel.
But the material contains less nickel than the Austenitic ones. That’s why Duplex stainless steel remains less expensive compared with its Austenitic counterpart.
Due to its resistance to corrosive saltwater even over a long time, you can find them heavily used in the underwater oil industry.
Besides, because of their strong malleability and weldability, Duplex stainless steels are often shaped into various components.
S stainless steel and S stainless steel are both typical Duplex stainless steels.
Martensitic stainless steel is similar to Ferritic stainless steel in the structure.
But the carbon amount makes it different.
The percentages of carbon element in martensitic stainless steel hover around 1%. Correspondingly, the amount in Ferritic stainless steel stays below 0.10%.
And the amount of carbon matters indeed, as it allows the material to have great extents by the hardening process.
The footprint of Martensitic stainless steel lies in applications with the needs for high strength.
However, the anti-corrosion performance of Martensitic stainless steel remains average, compared with Austenitic stainless steel with high nickel particularly.
You might often see Martensitic stainless steel in pumps or valves and many other applications with fewer requirements for corrosive issues.
The typical martensitic stainless steels include 431 stainless steel and 420S45 stainless steel.
To improve your experience to buy stainless steel coil from China, you need to know the finish treatment. And it is another key consideration for buying stainless steel products.
The common finish treatments today on the stainless steel market include:
Find the introduction of each below:
This finish treatment is the starting point for many other finishes in the stainless steel industry.
When there’re not many requirements for beauty, you might as well choose the 2B finish.
And the 2B finish can create a dark grey and slightly reflective effect.
Among the many, no. 4 finish can be the easiest one to maintain.
Due to this feature, you can easily find its footprint in light manufacturing. Also, manufacturers often use stainless steel with no. 4 finish to make armrest and beautiful products.
Typically, it comes with a low gloss and short parallel polishing lines on the surface. You might find it on the market with another name as “satin” or “lining”.
“Mirror” finish is another name of no. 8 finish treatment.
Pretty much from its name, it creates a high reflective polishing effect.
The applications of this stainless steel finish include cleanrooms, column covers, mirrors, decorative trim, pressure plates, reflectors, signage and wallboards.
Know more about the popular surface finish treatment.
As an importer, you need to know some basic things. Here we list some tips. Keep them in mind, and your business will go much more smoothly.
Your country may have special rules on some imports from China. So, make good use of your licensed customs broker. They can tell you if your goods are legal to import.
Incoterms protect your rights and your business. So, when determining incoterms followed, you need to get the most out of your trades. For example, determine who handles shipping costs.
Learn more about Incoterms.
When you import goods, you need to provide information about your goods to CBP. For legal import, you should make sure that all your information is correct and accurate.
There is no doubt that every importer needs to follow procedures and regulations. But, not aware of customs procedures and regulations? Your licensed customs broker can tell you.
Product liability insurance can protect you from damage caused by defective products. So, discuss with an insurance professional to choose insurance that best suits your products.
The right customs bond can make the import process simple. If you don’t know what to choose, don’t forget to contact your licensed customs broker again. It’s of great help.
Getting overwhelmed by all this information?
No worries. Take the shortcut by WJH premium stainless steel. We are always here for your service.
Contact us and write down your needs, we’ll figure out the solutions that tailor to your specific requirements and needs.
Are you interested in learning more about Decorative Ss Coil And Sheet? Contact us today to secure an expert consultation!