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个人中心316l播报讨论上传视频不锈钢材料牌号收藏查看我的收藏0有用+10316L是一种不锈钢的牌号，属于美国ASTM标准体系，对应中国GB标准体系中的牌号为022Cr17Ni12Mo2，统一数字代号为S31603。 [2]不锈钢是在大气、水、酸、碱和盐等溶液或其他腐蚀介质中具有一定化学稳定性的钢的总称。在不锈钢中，不锈性和耐蚀性起关键作用的是合金元素铬，随着含铬量的增加，其不锈性和耐蚀性也随之增加。不锈钢按组织结构不同，分为奥氏体型、奥氏体 + 铁素体型、铁素体型、马氏体型和沉淀硬化型不锈钢五类。 [3]316L不锈钢属于奥氏体不锈钢。 [4]奥氏体型不锈钢的组织结构是面心立方晶格，无磁性，不能通过热处理进行强化，只能采用冷加工强化手段来提高其强度。奥氏体型不锈钢具有耐蚀性，常温及低温下的塑性、韧性良好，易成形，焊接性良好，在工业中应用最为广泛。其产量约占不锈钢产量的 70%。其产品有板材、棒材、钢管、钢带、钢丝及锻件等。 [3]316L不锈钢具有良好的敏化态耐晶间腐蚀性能，适用于制造厚截面尺寸的焊接部件和设备，如石油化工、化肥、造纸、印染及核工业用设备的耐蚀材料。 [5]中文名316L
外文名AISI 316L
主要成分Cr，Ni，Mo
标准牌号022Cr17Ni12Mo2

目录
1化学成分2抗腐蚀性3力学性能4热处理5金相组织6区别辨别
化学成分
播报编辑碳 C ：≤0.030硅 Si： ≤1.00锰 Mn：≤2.00硫 S ： ≤0.030磷 P ： ≤0.045铬 Cr：16.00～18.00镍 Ni：10.00～14.00钼 Mo：2.00～3.00
抗腐蚀性
播报编辑316L因其优异的耐腐蚀性在化工行业有着广泛的应用，316L也是属于18-8型奥氏体不锈钢的衍生钢种，添加有2～3%的Mo元素。在316L的基础上，也衍生出很多钢种，比如添加少量Ti后衍生出316Ti，添加少量N后衍生出316N，增加Ni、Mo含量衍生出317L。市场上现有的316L大部分是按照美标来生产的。出于成本考虑，钢厂一般把产品的Ni含量尽量往下限靠。美标规定，316L的Ni含量为10～14%，日标则规定，316L的Ni含量为12～15%。按最低标准，美标和日标在Ni含量上有2%的区别，体现到价格上还是相当巨大的，所以客户在选购316L产品时还是需要看清，产品是参照ASTM还是JIS标准。316L的Mo含量使得该钢种拥有优异的抗腐蚀能力，可以安全的应用于含Cl－等卤素离子环境。由于316L主要应用的是其化学性能，钢厂对316L的表面检查要求稍低（相对304），对表面要求较高的客户要加强表面检查力度。
力学性能
播报编辑抗拉强度 σb (MPa)：≥480条件屈服强度 σ0.2 (MPa)：≥177伸长率 δ5 (%)：≥40断面收缩率 ψ (%)：≥60硬度 ：≤187HB;≤90HRB;≤200HV密度：7.98g/cm3；比热容比（20℃）：0.502J/(g*K)热导率（W/(m*K)）100℃300℃500℃15.118.420.9
热处理
播报编辑固溶1010～1150℃快冷。
金相组织
播报编辑组织特征为奥氏体不锈钢。
区别辨别
播报编辑SUS316L不锈钢最常用的两种不锈钢304，316（或对应于德/欧标的1.4308,1.4408），316与304在化学成分上的最主要区别就是316含Mo，而且一般公认，316的耐腐蚀性更好些，比304在高温环境下更耐腐蚀。 [1]所以在高温环境下，工程师一般都会选用316材料的零部件。但所谓事无绝对，在浓硫酸环境下，再高温度也千万别用316.不然这事可就出大了。学机械的人都学过螺纹，还记得为了防止在高温情况下螺纹咬死，需要涂抹的一种黑乎乎的固体润滑剂吧：二硫化钼（MoS2）,从中能得出2点结论：一：Mo确实是一种耐高温的物质。二：钼很容易和高价硫离子反应生成硫化物。所以没有任何一种不锈钢是超级无敌耐腐蚀的。说到底，不锈钢就是一块杂质（不过这些杂质可都比钢更耐腐蚀）较多的钢，是钢就可以和别的物质反应。新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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316L是含钼不锈钢种,由于钢中含钼，该钢种总的性能优于310和304不锈钢，高温条件下，当硫酸的浓度低于15%或高于85%时，316L不锈钢具有广泛的用途。316L不锈钢还具有良好的耐氯化物侵蚀的性能，所以通常用于海洋环境。316L不锈钢的最大碳含量0.03,可用于焊接后不能进行退火和需要最大耐腐蚀性的用途中。 在1600度以下的间断使用和在700度以下的连续使用中，316L不锈钢具有好的耐氧化性能。在800-1575度的范围内，最好不要连续作用。316L不锈钢，但在该温度范围以外连续使用316L不锈钢时，该不锈钢具有良好的耐热性。316L不锈钢的耐碳化物析出的性能比316不锈钢更好，可用上述温度范围。在1010-1150度的温度范围内进行固溶退火，然后迅速冷却。316L不锈钢不能过热处理进行硬化。 316L不锈钢具有良好的焊接性能。可采用所有标准的焊接方法进行焊接。焊接时可根据用途，分别采用316Cb、316L或309Cb不锈钢填料棒或焊条进行焊接。为获得最佳的耐腐蚀性能，316不锈钢的焊接断面需要进行焊后退火处理。如果使用316L不锈钢，不需要进行焊后退火处理。 PRODUCT PARAMETERS 产品参数 化学成分 成分 C Si Mn P S Ni Cr Mo 最小值 - - - - - 10 16 2 最大值 0.03 1 2 0.045 0.03 14 18 3 力学性能 抗拉强度 σb (MPa)：≥480 条件屈服强度 σ0.2 (MPa)：≥177 伸长率 δ5 (%)：≥40 断面收缩率 ψ (%)：≥60 硬度 ：≤187HB;≤90HRB;≤200HV 密度：7.98g/cm3； 比热容比（20℃）：0.502J/(g*K)