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The use of stainless steel is
Release Date:
2024-08-07
Author:
The following are all grades of stainless steel and their respective applications:
Grade 1, 301—exhibits excellent ductility and is suitable for molded products. It can also be strengthened by increasing the processing speed. It offers outstanding weldability. Both its wear resistance and fatigue strength surpass those of 304 stainless steel.
Secondly, 302 steel exhibits corrosion resistance comparable to that of 304 steel; however, its higher carbon content gives it superior strength.
III, 303—By adding small amounts of sulfur and phosphorus, its machinability is improved.
4. 304—also known as 18/8 stainless steel. Its Chinese national standard grade is 0Cr18Ni9.
Fifth, 309 exhibits superior temperature resistance compared to 304.
Sixth, 316—following 304, it is the second most widely used stainless steel grade, primarily employed in the food industry and medical‑device applications. The addition of molybdenum imparts excellent corrosion resistance. With superior resistance to chloride‑induced stress corrosion compared to 304, it is also referred to as “marine‑grade steel.” SS316 is commonly used in nuclear fuel reprocessing equipment, and 18/10‑grade stainless steel is likewise well suited for such applications.
Vii, 321—Its other properties are similar to those of 304; however, the addition of titanium reduces the risk of corrosion at the welds.
VIII, 400 Series—Ferritic and Martensitic Stainless Steels
Ix, 408 — exhibits good heat resistance but poor corrosion resistance; contains 11% chromium and 8% nickel.
X, 409 — the most cost-effective grade (per British and American standards), commonly used in automotive exhaust systems; it is a ferritic stainless steel (chromium steel).
11, 410 – Martensitic (high‑strength chromium steel), with good wear resistance but poor corrosion resistance.
Xii, 416—The addition of sulfur can improve the material’s machinability.
XIII, 420—“tool-grade” martensitic stainless steel, similar to Brinell high-chromium steel, is one of the earliest stainless steels developed. It is also used for surgical knives and can be polished to an exceptionally high luster.
14, 430—Ferritic stainless steel, used for decorative applications such as automotive components. It exhibits good formability but has relatively poor temperature resistance and corrosion resistance.
15, 440—high‑strength tool steel with a slightly higher carbon content; after appropriate heat treatment, it achieves a high yield strength and a hardness of up to 58 HRC, making it one of the hardest stainless steels. Its most common application is in “razor blades.” Common grades include 440A, 440B, 440C, and 440F (free‑cutting).
XVI, 500 series—heat-resistant chromium alloy steel.
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Let us introduce you to what aluminum tubing is.
Aluminum tubing typically refers to pipes made from aluminum alloys. Aluminum alloys are materials composed of aluminum combined with other metallic elements, characterized by their light weight, high strength, and excellent corrosion resistance, making them widely used across various industries.
Aluminum tubes are mainly classified into the following types.
Classified by precision: ordinary aluminum tubes and precision aluminum tubes; the latter typically undergo secondary processes such as cold drawing and rolling after extrusion.
With the rapid growth of the new‑energy vehicle industry, automotive thermal management systems are confronting entirely new challenges and opportunities. In this field, aluminum tubing, thanks to its superior performance and broad range of applications, has steadily emerged as an unsung leader in thermal management for new‑energy vehicles, providing robust support for enhanced vehicle performance and safe operation.
Production and Manufacturing of Aluminum Tubes
Aluminum tubes are classified into four main types based on their forming process: hot-extruded aluminum tubes (the mainstream), cold-drawn and precision-rolled aluminum tubes, welded aluminum tubes, and impact-extruded pharmaceutical aluminum tubes. Among these, the most widely used in the industry is seamless or split‑die extruded aluminum tubing.
What is the difference between 409 stainless steel and 430 stainless steel?
Compared with ordinary low‑carbon steel, 409 stainless steel sheet exhibits poorer thermal conductivity and lower elongation; consequently, greater deformation forces are required during shearing and bending. For 321 stainless steel sheet, springback during bending is more pronounced than in carbon steel. Moreover, since the elongation of stainless steel sheet is lower than that of carbon steel, the bend radius R of the workpiece should be larger than that for carbon steel during bending operations; otherwise, cracking is likely to occur.
What is the difference between 202 stainless steel and 304 stainless steel?
202 stainless steel and 304 stainless steel are both austenitic stainless steels at their core, non-magnetic, and visually quite similar. However, the key difference lies in their nickel content, which results in significant variations in their mechanical properties and price.
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