Characteristics of SA387 Gr91 steel plate

Characteristics of SA387 Gr91 steel plate:
SA387 Gr91 steel plate has the ability to prevent hydrogen embrittlement, hydrogen corrosion, hydrogen stripping, and sulfide corrosion in a medium temperature (350℃ to 480℃) hydrogen environment, and has good low tempering brittleness.

SA387 Gr91 steel plate also has good impact toughness, high and stable durability and thermal strength properties. When the service temperature is lower than 620℃, the allowable stress is higher than that of austenitic stainless steel. Above 550℃, the recommended allowable design stress is about twice that of T9 and 2.25Cr-1Mo steels. It has good resistance to intergranular corrosion.

Using special smelting methods to reduce the phosphorus content, SA387 has high brittleness resistance and good impact toughness in low temperature environments.

SA387 material is suitable for refining and gas processing in hydrogenation reaction and conversion equipment at high temperatures. The maximum thickness of steel plate can reach 250 mm. According to different thickness and impact requirements, the heat treatment of SA387 steel plate is selected as normalizing plus tempering or normalizing plus rapid cooling plus tempering.