What is the Chinese equivalent grade for TP321H, and what are the applicable standards?
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What is the corresponding Chinese grade for TP321H? TP321H complies with the ASTM A213 standards; what standards do the corresponding domestic standard grades follow? What are the differences between the national standard and the American standard regarding TP321H of the same grade? Thank you!
TP321H is a high-temperature resistant austenitic stainless steel. The corresponding domestic grade should be S32169. Both of these grades of stainless steel seamless pipes are specified in GB/T 13296-2013 \"Stainless steel seamless pipes for boilers and heat exchangers\" and GB/T 14976-2012 \"Stainless steel seamless pipes for fluid transport\". As for the differences. I don’t know what you want to ask or where it’s used. The standard systems are different, and it would be quite cumbersome to list them one by one. If one wants to compare various parameters (including chemical composition, mechanical properties, etc.), the original poster might as well use several standards for comparison.
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The information is very useful; thanks to the original poster for sharing it.
The information is very useful; thanks to the original poster for sharing it.
H means that the carbon content in the composition is high
Methods to affect intergranular corrosion are: 1. reducing the carbon content in the steel, 2. adding stabilizing elements, 3. solution treatment. In 321H, this H refers to an increase in the carbon content of the steel compared to 321. It is mainly resistant to high temperatures. Resistant to intergranular corrosion? How can that be said? Please give me some advice.
Agree with the view above – all of them contain Ti. The main difference lies in the carbon content; a relatively higher carbon content is beneficial for high-temperature resistance
For large manufacturing plants, the new grade of 321 is virtually indistinguishable from the American standard; in many cases, both grades are simply printed