weather resistant A588 grade A steel equivalent JIS steel material

Normalizing is a special case of annealing, the effect is similar to annealing, but the microstructure obtained by normalizing is finer. For low or medium carbon steel, normalizing can improve hardness and machinability. For weather resistant A588 grade A steel medium carbon steel and low alloy steel, normalizing can refine grain and uniform structure and reduce hardness. For high carbon steel and high alloy steel, normalizing can eliminate the network carbide produced by forging and improve the homogeneity of the preparation heat treatment structure.

Due to the excellent corrosion resistant properties, SA387 GRADE 91 Class 1 sheet is also an option for use in sour service environments. The material has good weldability and with its heat resistant qualities, the material is a highly versatile steel which can be used in numerous applications.
Mechanical properties of SA387 GRADE 91 Class 1
Tensile strength, ksi [MPA]:85 to 110 [585 to 760]
Yield strength, min, ksi [MPa]/(0.2% offset):60 [415]
Elongation in 2 in. [50mm], min, %:18

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