So, a question always arises in our mind, “what is the difference between A106 and SA106 pipe materials”? ASTM A106 vs ASTM A53 Difference between A106 and SA106Īs a piping engineer, you must have heard that some are referring to the pipe as A106 while some are referring to SA106. A53 pipes are usually not applied for high-temperature applications. A106 pipes are usually used for high-temperature pressure applications. A53 pipes are usually cheaper than A106 pipes. A106 pipes are generally costlier than A53 pipes. ASTM A53 pipes do not have silicon in their composition. As per chemical analysis, A106 has silicon in its chemical composition. On the other hand, ASTM A53 pipes can be seamless or welded. Both tensile and yield strength increase when we move on from Grade A to Grade C but at the same time, the percentage elongation reduces.ĪSTM A106 ASTM A53 ASTM A106 pipes are seamless pipes. In a similar way, the tensile strength also varies. While A106-A has a minimum yield strength of 30 KSI (205 MPa) and A106-B has a minimum yield strength of 35 KSI (240 MPa), the other grade A106-C has the largest minimum yield strength of 40 KSI (275 MPa). However, ASTM A106 provides a note of caution for these other elements saying the total combined percentage of all these other materials shall not exceed 1%.Īs the maximum carbon percentage of different grades of A106 material varies in chemical composition, so vary their mechanical strengths. The maximum percentage of other elements like phosphorus, sulfur, silicon, copper, chromium, molybdenum, nickel, vanadium, etc are usually the same in all three grades of ASTM A106 carbon steel material. A106 Grade A usually has 0.27 to 0.93% manganese while A106 Grade B and C generally have 0.29 to 1.06% Manganese. In the chemical composition of the different grades as mentioned above, the percentage range of manganese also varies slightly with respect to grade. A106 Grade C, having a maximum of 0.35% carbon.A106 Grade B, having a maximum of 0.30% carbon, and.A106 Grade A, having a maximum of 0.25% carbon.
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