ASTM A335 P91 Type 1 vs Type 2: Differences, Properties & Applications Guide
ASTM A335 P91 Type 1 vs Type 2: Key Differences Explained The main difference between ASTM A335 P91 Type 1 and Type 2 lies in microstructure control and long-term creep performance. Type 2 offers improved toughness, better stability, and enhanced resistance to high-temperature deformation, making it more suitable for critical applications such as power plants and high-pressure steam systems. What Read more…








