Description

Hongmai Stainless Steel 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1 4cr*7nimo1
According to the composition, it can be divided into Cr series (**0 series), Cr-Ni series (**0 series), Cr-Mn-Ni series (**0 series), heat-resistant chromium alloy steel (**0 series) and precipitation hardening system (**0 series).
**0 Series: Chromium-Manganese-Nickel Huaye Stainless Steel
**1,**2 and so on: Manganese instead of nickel has poor corrosion resistance and is widely used as a cheap substitute for **0 Series in China.
**0 Series: Chromium-Nickel Austenitic Stainless Steel
**1: It has good ductility and can be used for moulding products. It can also be rapidly hardened by mechanical processing. Good weldability. The wear resistance and fatigue strength are better than **4 stainless steel.
**2: Corrosion resistance is the same as **4, and its strength is better because of its relatively high carbon content.
**3: By adding a small amount of sulfur and phosphorus, it is easier to cut than **4.
**4: General model; *8/8 stainless steel. Products such as: corrosion-resistant containers, tableware, furniture, railings, medical equipment. The standard composition is *8% chromium plus 8% nickel. Stainless steel is non-magnetic and can not change its metallographic structure by heat treatment. GB is 0Cr*8Ni9.
**4L: It has the same characteristics as **4, but low carbon makes it more resistant to corrosion and easy to heat treatment. However, it has poor mechanical properties and is suitable for welding and products that are not easy to heat treatment.
**4 N: It is a nitrogen-containing stainless steel with the same characteristics as **4. Nitrogen is added to improve the strength of the steel.
**9: Compared with **4, it has better temperature resistance, up to **0 C.
**9S: With a large amount of chromium and nickel, it has good heat resistance and oxidation resistance. Products such as heat exchanger, boiler components, injection engine.
**0: Excellent oxidation resistance at high temperature, the maximum temperature of use is ***0 C. The mat weaving can reach ***0 items for decorative materials, electrical appliances and kitchen equipment inside and outside buildings.
**6: Following **4, the second most widely used steel is mainly used in food industry, clocks and watches, pharmaceutical industry and surgical equipment, adding molybdenum to obtain a special corrosion-resistant structure. Because it has better chloride corrosion resistance than **4, it is also used as "marine steel".
SS**6 is usually used in nuclear fuel recovery devices. Class *8/*0 stainless steel usually meets this application level.
**6L: Low carbon makes it more resistant to corrosion and easy to heat treatment. Products such as chemical processing equipment, nuclear power generators, refrigerant storage grains.
**1: Except that the addition of titanium reduces the risk of corrosion of weld metal, other properties are similar to **4.
**7: Niobium is added, which is suitable for welding aircraft parts and chemical equipment.
**0 Series: Ferritic and martensitic stainless steel, manganese-free, to a certain extent can replace **4 stainless steel
**8: Good heat resistance, weak corrosion resistance, *1% Cr, 8% Ni.
**9: The cheapest model (British and American), usually used for automobile exhaust pipes, is ferritic stainless steel (chromium steel).
**0: martensite (high strength chromium steel), good wear resistance, poor corrosion resistance.
**6: Adding sulphur improves the processability of the material.
**0: "Tool grade" martensitic steel, similar to Brinell high chromium steel, the earliest stainless steel. It\'s also used for surgical knives and can be made very bright.
**0: Ferritic stainless steel for decorative purposes, such as automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.
**0: High strength cutting tool steel, slightly higher carbon content, after appropriate heat treatment can obtain higher yield strength, hardness can reach *8HRC, belongs to the hardest stainless steel. The most common example of application is the razor blade. There are three common models: **0A, **0B, **0C, and **0F (easy-to-process).
Series **0: Heat-resistant chromium alloy steel.
Series **0: Martensite precipitation hardening stainless steel. Hongmai Metal Material (Shanghai) Co., Ltd. can provide material standards: GB, ASTM / ASME, JIS, DIN, etc.
Available spot resources: austenitic stainless steel: 9cr*8/9cr*8L/9cr*8H, **6/**6L/**6TI, **1, **7, **7L, **9S, **0S, **4L, **4SMO, **3MA 9CR*8, 9cr*8NI2,...
Ferritic stainless steel: **0, **3, **1, **4, **9.
Martensitic stainless steel: **0, **0, **0J1, **0J2..
Duplex stainless steel: ***5, ***7, *9cr*8, ***1..
Nickel alloy material: Inconel **0/**5, lncoloy**5/**0/**0H, Monel **0, C**6.............................................................

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