316LUJ不锈钢#低铁镍尿素级不锈钢 316LUJ钢板

Austenitic stainless steel: 316 luj all at room temperature with austenitic stainless steel of the organization. Contains about 18% of Cr, Ni in steel of 13% ~ 15% and about 0.03% C, has the stable austenite rust including famous high chromium-nickel steel and on this basis, increase content of Cr, Ni and Mo, Cu, Si, N, P and other elements of high Cr - Ni series steel. All austenitic stainless steel ic and has high toughness and plasticity, but strength is low, can't by phase transformation strengthening, can only be strengthened by cold working. If add other elements such as, good free cutting. Such steel in addition to the acid medium corrosion resistance to oxidation, if it contains the elements such as Mo, Cu has ability of sulfuric acid, phosphoric acid, formic acid, acetic acid and urea corrosion. If carbon content less than 0.03% of such steel can significantly improve the intergranular corrosion and corrosion resistance. High silicon austenitic stainless steel of concentrated nitric acid have good corrosion resistance. Because the austenitic stainless steel has comprehensive and good comprehensive performance, in walks

316LUJ不锈钢：在使用状态下以铁素体组织为主的不锈钢。含铬量在11%~30%，具有体心立方晶体结构。这类钢一般不 含镍，有时还含有少量的Mo、Ti、Nb等到元素，这类钢具导热系数大，膨胀系数小、抗氧化性好、抗应力腐蚀优良等特点，多用于制造耐大气、水蒸气、水及氧化性酸腐蚀的零部件。这类钢存在塑性差、焊后塑性和耐蚀性明显降低等  缺点，因而限制了它的应用。炉外精炼技术（AOD或VOD）的应用可使碳、氮等间隙元素大大降低，因此使这类钢获得广泛应用。
 316LUJ奥氏体--铁素体双相不锈钢：是奥氏体和铁素体组织各约占一半的不锈钢。在含C较低的情况下，Cr含量在18%~28%，   Ni含量在3%~10%。有些钢还含有Mo、Cu、Si、Nb、Ti，N等合金元素。该类钢兼有奥氏体和铁素体不锈钢的特点，与   铁素体相比，塑性、韧性更高，无室温脆性，耐晶间腐蚀性能和焊接性能均显著提高，同时还保持有铁素体不锈钢的  475℃脆性以及导热系数高，具有超塑性等特点。与奥氏体不锈钢相比，强度高且耐晶间腐蚀和耐氯化物应力腐蚀有明显提高。双相不锈钢具有优良的耐孔蚀性能，也是一种316LUJ铁镍不锈钢。