Stainless 904l Plates have notable resistance to warm seawater and along with resistance to chloride ion assault. The high resistance of Stainless 904l Plates towards stress related corrosion cracking is because of the presence of excessive amounts of nickel in its chemistry. In order to achieve maximum resistance to stress related corrosion cracking under critical environments, the Stainless 904l Plate needs to be solution treated following cold working.

MECHANICAL PROPERTIES:

Stainless 904l Plate Typical Room Temperature Mechanical Properties

Grade

Tensile Strength

KSI (min.)

Yield Strength 0.2% Offset KSI (min.)

Elongation % in 2ʺ(50.8 mm)

Hardness
(Brinell) MAX

Hardness
(Rockwell B) MAX

904L

70-90

150

Their fusion point is lower than that of non-alloyed steel therefore austenitic steels have to be welded with lower heat input than Stainless 904l Plate steels. To avoid overheating or burn-through of thinner sheets, higher welding speed has to be applied. Copper back-up plates for faster heat rejection are functional, whereas, to avoid cracks in the solder metal, Stainless 904l Plate is not allowed to surface-fuse the copper back-up plate.

Stainless 904l Plate