What Is The Difference Between 316 And 316L Pipe?

First of all, there are differences in ingredients. 316L is ultra-low carbon, and L means low carbon, so the carbon content of 316L material is lower than that of 316 material. Secondly, the corrosion resistance is different. 316L stainless steel has better resistance to grain boundary corrosion and better anti-corrosion and anti-rust capabilities. The strength of the two materials is also different. The strength of 316L material is lower than that of 316, making it easier to process. In addition, the welded section of 316 stainless steel requires post-weld annealing treatment, while 316L stainless steel does not.
1. Different ingredients
316 Chemical composition (%): C≤0.08, Si≤1.00, Mn≤2.00, P≤0.035, S≤0.03, Ni≤10.0-14.0, Cr≤16.0-185, Mo≤2.0-3.0.
316L chemical composition (%): Cs0.03, Si≤1.00, Mn≤2.00, P≤0.035, S≤0.03, Ni≤10.0-14.0, Cr≤16.0-185, Mo≤2.0-3.0
2. There are differences in brands
316 grade: The old grade is 0Cr17Ni12Mo2, and the new grade is 06C17N12M2, which is the American standard TP316 and the Japanese standard SUS316.
316L brand: The old brand is 00Cr17Ni14Mo2, the brand is 022C17N12M2, which is the standard TP316L and the Japanese standard SUS316L.
3. There is a difference in intensity
Yield strength: 316 material is 210 (N/MM2), 316L material is 18O (N/MM2).
Tensile strength: 316 material is 520 (N/MM2), 316L material is 48O (N/MM2)
The strength of 316L material is lower than that of 316 material, making it easier to process.
4. Different corrosion resistance
316L stainless steel has better resistance to intergranular corrosion and better anti-corrosion and anti-rust capabilities.