Research and Development > Technical Report > No.12 Special Issue on “Steel Pipes and Tubes” and “Stainless Steel” > Durability of 11%Cr Stainless Steel “JFE410DH” for Building Structure Use

No.12 Special Issue on “Steel Pipes and Tubes” and “Stainless Steel”

Durability of 11%Cr Stainless Steel “JFE410DH” for Building Structure Use

OKADA Shuji     ISHII Kazuhide     UJIRO Takumi

Abstract

The durability of 11% Cr stainless steel “JFE410DH” has been investigated by exposure tests and accelerated tests for structural materials of steel structural houses. As the type of corrosion about stainless steel is localized corrosion (pitting), the end of lifetime is defined as the point when the maximum pit depth reaches 10% of the thickness. Because the base steel has good anti-corrosion property, the lifetime of JFE410DH (2.3 mmt) is estimated at more than 100 years without coating or painting in the indoor environment. The cut edge or the weld is free from repair and maintenance. JFE410DH is approved as structural materials for long life dwelling houses by the Minister of Land, Infrastructure and Transport, therefore JFE410DH is expected to be used for long life dwelling houses.

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