Project information
The primary objective of this project is to use European cooperation to develop a scientifically based user-friendly guideline to determine fitness for purpose of welded stainless steel surfaces and suggest most suitable post weld cleaning strategies to remove weld oxides and therefore to restore corrosion resistance of the welds. The results obtained from the project will help the stainless steels industry and end-users, such as pulp & paper, chemical, water, construction, oil & gas and energy industries, enhancing the security and life-time of welds, as well as suggesting sustainable and environmentally friendly cleaning processes. 

The project will involve several welding techniques and post welding cleaning methods. The analysis will be focused on both top and root oxides formed during welding, both concerning oxide type and the subsequent corrosion properties. A classification of the different types of oxides will be made based on visual appearance concerning discoloration, oxide composition, thickness and corrosion resistance. This will be used to design a qualitative and visual method where the discoloration of the oxides will be related to the corrosion resistance of the weld and the optimum cleaning method required after welding for corrosion resistance recovery.

A wide range of high and low alloyed stainless steels, such as ferritic, austenitic and duplex stainless steels as well as laboratory heats of parent materials with different alloying compositions will be investigated.

Project name:  Guidelines for use of welded stainless steel in corrosive environments
Acronym: JOINOX
Project duration: 2012-09-01 to 2016-02-29, i.e 42 months
Technical group: TGS 8

Coordinator: Swerea KIMAB AB (Nuria Fuertes/nuria.fuertes@swerea.se)

Updated 26/01/2016