National service hotline135 2865 7111
151 1833 5099
151 1833 5099
Dongguan Denuo metal steel Co., LTD
Tel: 0769-83067750
Tang Zong 13528657111 (wechat same number)
Wang Lin 15118335099 (wechat same number)
Q Q: 806124705
Add: No.454 Taian Road, Chang 'an Town, Dongguan City, Guangdong Province
SUS630 Stainless steel |
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| 2021-01-26 15:54:58 | ||
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| Detailed description | ||
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peculiarity 630 stainless steel is precipitated, quenched, martensitic stainless steel, and this grade has high strength, hardness and corrosion resistance. After heat treatment, the mechanical properties of the product are more perfect, and the compressive strength of up to 1100-1300 mpa (160-190 ksi) can be achieved. This grade cannot be used above 300 ° C (570F) or at very low temperatures, it has good corrosion resistance to the atmosphere and diluted acids or salts, and its corrosion resistance is the same as 304 and 430. Chinese brand 0Cr17Ni4Cu4Nb 05Cr17Ni4Cu4Nb. Chemical composition C: 0.07 or less Si: 1.00 or less Mn: 1.00 or less P: 0.035 or less S: 0.030 or less Ni: 3.00 to 5.00 Cr: 15.5 to 17.5 Mo:-- Cu: 3.00 to 5.00 Nb: 0.15 to 0.45 Other :-- United States ASTMS17400, AISI630,UNS630 Chemical composition C: 0.07 or less Si: 1.00 or less Mn: 1.00 or less P: 0.040 or less S: 0.030 or less Ni: 3.00 to 5.00 Cr: 15.5 to 17.5 Mo:-- Cu: 3.00 to 5.00 Nb: 0.15-0.45 Other :-- Heat-resistant steel: Alloy steel with high strength and good chemical stability at high temperatures. It includes oxidation resistant steel (or high temperature non-peeling steel) and heat strength steel. Oxidation resistant steels generally require better chemical stability, but bear lower loads. Heat strength steels require higher high temperature strength and corresponding oxidation resistance. Heat-resistant steel is often used in the manufacture of boiler, steam turbine, power machinery, industrial furnace and aviation, petrochemical and other industrial sectors to work at high temperatures parts. In addition to high temperature strength and resistance to high temperature oxidation corrosion, these parts also require sufficient toughness, good machinability and weldability, and certain organizational stability according to different uses. In addition, some new low chromium nickel oxidation resistant steels have been developed. China has been producing heat-resistant steel since 1952. Later, some new types of low-alloy heat-strength steel were developed, so that the working temperature of pearlite heat-strength steel was raised to 600 ~ 620℃; In addition, some new low chromium nickel oxidation resistant steels have been developed. Purpose: Heat-resistant steel and stainless acid-resistant steel cross each other in the scope of use, some stainless steel with heat-resistant steel characteristics, can be used as stainless acid-resistant steel, but also as heat-resistant steel Heat-resistant steel production process Heat-resistant steel is generally smelted in electric arc furnaces or induction furnaces. Vacuum refining and off-furnace refining processes are often used for high quality requirements. Casting some high-alloy heat-resistant steel is difficult to process deformation, and the production of castings is not only cost-effective than rolling, but also has higher durable strength. Therefore, heat-resistant cast steel occupies a considerable proportion in heat-resistant steel. In addition to sand casting, precision casting can also be used to obtain products with smooth surfaces and precise dimensions. Centrifugal casting is often used for high temperature furnace tubes used for cracking synthetic ammonia and ethylene. Heat-treated pearlite heat-strength steel is usually used after normalizing or tempering; Martensitic heat-resistant steel is treated with tempering to stabilize the structure and obtain good comprehensive mechanical properties and high temperature strength. Ferritic steel cannot be strengthened by heat treatment. In order to eliminate the internal stress caused by cold plastic deformation processing and welding, it can be annealed at 650 ~ 830 ° C, and quickly cooled after annealing so that it can quickly pass through the brittle temperature range of 475 ° C. Austenitic oxidation resistant steels are mostly heat-treated with high temperature solution to obtain good cold deformation. The austenitic hot strength steel is first treated with high temperature solution, and then aged at 60 ~ 100℃ above the use temperature to stabilize the structure, while the second phase is precipitated to strengthen the matrix. Heat-resistant cast steel is mostly used in the cast state, and the corresponding heat treatment is also used according to the type of heat-resistant steel. |
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