Process performance of 0Cr17Ni12Mo2N (AISl316N), 00Cr17Ni13Mo2N (AISI316LN) steel

304 stainless steel and 316 stainless steel are important grades of stainless steel in the steel industry. 美钢企业广泛使用304和316不锈钢来满足客户的需求。304不锈钢是一种残次品低碳钢合金，主要由18%的铬、8后加1%的铁、0.08%的碳、0.75%的氮和软物组成，它是一种很锈和腐蚀性能良好的钢，很适合制作应用于食品、酸性及强咸性环境，奶制品、酿造工业容器中及碱性环境，耐力强度也比较高，各种规格类型的管子、螺钉、螺栓、芯轴等都可以有效的使用304不锈钢来构件。

316不锈钢在304的基础上增加了2.16%的硼（B）和0.04%硅（Si），可以更好地抵御腐蚀性环境，尤其是在高温、氯仿和硫化氢环境下。它可以有效地抵抗强烈的碱性环境，并可以非常方便地用来代替不锈钢。316不锈钢也可以在低温工件中应用，一般可以用于机械制造行业，食品加工行业、化工行业和各种海洋行业应用中。由于其良好的耐热性能和韧性，不锈钢也可以用于汽车制造和航空制造中。由于它的良好的韧性，它可以提高机械制造和冶金制造的效率和生产率，从而为用户提供了更高的收益。

00Cr17Ni12Mo2N (AISI 316N) and 00Cr17Ni13Mo2N (AISI 316LN) are the characteristics of the steel. 00Cr17Ni12Mo2N (AISI 316N) is a kind of low carbon steel, good performance, very suitable for welding. Its main components are 17% chromium, 8% nickel, 2% molybdenum, 0.1% nitrogen, 0.03% sulfur, 0.03% phosphorus, 0.02% carbon. 00Cr17Ni13Mo2N (AISI 316LN) is also a low carbon steel, but the carbon content is lower than 00tr17Ni12Mo2N (AISI 316N). It is mainly used for production of high nitrate products, and it is also applicable to make austenitic steel with better corrosion resistance.

The mechanical properties of 00Cr17Ni12Mo2N (AISI 316N) and 00Cr17Ni13Mo2N (AISI 316LN) steel are respectively, tensile strength 430Mpa-550Mpa, elongation rate ≥40%, yield strength ≥205Mpa, hardness≤ MB205, final brinell hardness 217HB. Meanwhile, they have excellent corrosion resistance and high temperature resistance, especially in chloride corrosion environment. Both of them can be used in many industrial production with complex environment. For gas-related industry, it is mainly used to manufacture gas cylinder and pipe. In the petroleum industry, it is mainly used in the most severe work environment, such as oil rigs and nuclear power plants.

In short, 00Cr17Ni12Mo2N (AISI 316N) and 00Cr17Ni13Mo2N (AISI 316LN) are good performance steel materials which have excellent mechanical properties and excellent corrosion resistance. They are widely used in many fields of industry, such as petrochemical, food, and aerospace industries.

Introduction

AISI 316N and AISI 316LN Steels belong to the family of Austenitic stainless steels, which are strengthened by Nitrogen element. AISI 316N (UNS S31651) and AISI 316LN (UNS S31653) are combinations of the properties of AISI 316 and AISI 316L, respectively, and also have a nitrogen enrichment.

Designated Properties

AISI 316N and AISI 316LN have the same nominal composition, including 17-19wt% Chromium, 12-13wt% Nickel and 2-3wt%

Molybdenum with small amounts of Iron, Carbon and Manganese. The main difference is in their nitrogen content. AISI 316N has high Nitrogen content of 0.11-0.14% while AISI 316LN has lower Nitrogen content of 0.06-0.10%.

Corrosion Resistance

Both AISI 316N and AISI 316LN are corrosion resistant and can be used in a wide range of environments. AISI 316N offers superior corrosion resistance compared to AISI 316LN due to its high nitrogen content. This makes it suitable for more demanding applications where chlorides are present, especially in the saline environments such as sea water.

Metallurgical Process

The characteristics of both AISI 316N and AISI 316LN rely heavily on the metallurgical process. Molten steel is poured into molds and allowed to cool and solidify until it forms a desired structure and shape. After the steel has solidified, it is reheated, rolled, annealed and then subjected to pickling, which helps to remove imperfections from the surface.

Weldability

Both AISI 316N and AISI 316LN possess good weldability, though AISI 316N is much more prone to cracking when welding because of its higher nitrogen content. The weldability of both materials can be improved by reducing their nitrogen content by minimal post-weld heat treatment and using low heat input during welding.

Conclusion

In conclusion, AISI 316N and AISI 316LN are both high strength austenitic stainless steels with excellent corrosion resistance, weldability, and formability. AISI 316N is suitable for more demanding applications whereas AISI 316LN is more suitable for general applications with low nitrogen content and better weldability.