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不锈钢锻件按基体组织的分类 Classification of stainless steel forgings according to matrix

2021-09-15


  1、铁素体不锈钢。含铬12%~30%。其耐蚀性、韧性和可焊性随含铬量的增加而提高 , 耐氯化物应力腐蚀性能优于其他种类不锈钢。
 
  2、奥氏体不锈钢。含铬大于18%,还含有 8%左右的镍及少量钼、钛、氮等元素。综合性能好,可耐多种介质腐蚀。
 
  3、奥氏体 - 铁素体双相不锈钢。兼有奥氏体和铁素体不锈钢的优点,并具有超塑性。
 
  4、马氏体不锈钢。强度高,但塑性和可焊性较差。
 
  5、沉淀硬化型不锈钢。具有有很好的成形性能和良好的焊接性,可作为超高强度的材料在核工业、航空和航天工业中应用。
  
  按成分可分为Cr系(SUS400)、Cr-Ni系(SUS300)、Cr-Mn-Ni(SUS200)及析出硬化系(SUS600)。
 
 
  1, ferritic stainless steel. Contains 12% to 30% chromium. Its corrosion resistance, toughness and weldability with the increase in chromium content increased resistance to chloride stress corrosion resistance is better than other types of stainless steel.
 
  2, austenitic stainless steel. Containing more than 18% chromium, also contains about 8% of nickel and a small amount of molybdenum, titanium, nitrogen and other elements. Comprehensive performance is good, can withstand a variety of media corrosion.
 
  3, austenitic - ferrite duplex stainless steel. Both the advantages of austenitic and ferritic stainless steel, and has a superplasticity.
 
  4, martensitic stainless steel. High strength, but poor plasticity and weldability.
 
  5, precipitation hardening stainless steel. Has a good forming performance and good weldability, can be used as ultra-high strength materials in the nuclear industry, aviation and aerospace industry applications.
 
  (SUS400), Cr-Ni (SUS300), Cr-Mn-Ni (SUS200) and precipitation hardening (SUS600) can be classified into Cr.