Differences in mechanical properties
The mechanical strength of ASTM A53 Grade B is the same as that of ASTM A106 Grade B pipe.
Differences in chemical properties
The following table lists the differences in chemicals for the three similar pipes:
Since ASTM A106 B is the one in common use, the chemical we list here is C≤0.3%, Mn 0.29-1.06%, P≤0.035, S≤0.035%, If ＞ 0.1, Cr≤0.40, Cu≤0.40, Ni≤0.40, Mo≤0.40, V≤0.08
Unlike ASTM A53 B, ASTM A106 B has a minimum of 0.1% Si, while A53 B has 0, so A106 B has better heat resistance than A53 B, since the Si improves heat resistance.
A106 Grade B has less sulfur and phosphorus content than A53 B, which is better.
Applications for both standards
Both pipes are used in mechanical and pressure systems, steam, water, gas, etc.
Applications for ASTM A53 pipes
1. Construction, underground transportation, groundwater extraction during construction, steam water transportation, etc.
2. Bearing sets, machining of machinery parts.
3. Electrical application: gas transmission, fluid conduction for hydraulic power generation.
4. Antistatic tube for wind power plants, etc.
5. Pipes that required zinc coating.
Applications for ASTM A106 pipes
Especially for high temperature services up to 750 ° F, and could replace the ASTM A53 pipe in most cases. In some countries, at least in the United States, ASTM A53 is usually for welded pipes, while ASTM A106 is for seamless pipes. And if the customer requests ASTM A53, A106 will also be offered. In China, the manufacturer will offer the pipeline that meets the three ASTM A53 B / ASTM A106 B / API 5L B standards.