MTI loves corrosion! Well, not corrosion exactly. But we are passionate about understanding, researching, providing knowledge, and developing solutions for industrial processing issues caused by corrosion and other damage mechanisms. It’s our mission to serve the processing industries by providing global leadership in materials technology to improve safety, sustainability, reliability and profitability.
We recognize the problems corrosion causes every day, so today we’re observing World Corrosion Awareness Day. Our global research projects, created and steered by MTI members around the world, especially in the North America, Europe and Asia Technical Advisory Councils (TACs) of MTI, are the core of what MTI does to provide corrosion and other processing solutions. These members have invested in MTI membership to collectively study issues within their operations that many industrial processes encounter. Our member teams are actively working on 50+ projects. Here is a sample of some of the funded projects underway:
Navigating Materials Selection for Abrasion and Corrosion Challenges Roundtable (415)
Champions: Murray Pearson, Hatch; Gary Coates, Nickel Institute
MTI is planning “Navigating Materials Selection for Abrasion and Corrosion Challenges, a Roundtable for Mineral Processing, Refining, and Chemical Processing companies,” June 24-25, 2024, in Denver, CO. The program will include presentations from materials experts working in Processing Industries sectors. Topics include understanding the roles of corrosion and abrasion in wear, case studies, and different materials (non-metallic as well as metallic) that have performed well, and much more. Registration will open soon!
MTI Corrosion Chronicles Podcast (389)
Champion: Marc Cook, Tricor Metals
The Corrosion Chronicles podcast launched its first season in 2023. Each episode features special expert guests discussing topics focused on materials of construction and corrosion-related issues. Subscribe and access all the episodes: https://mtipodcast.podbean.com/
Stress Corrosion Cracking Under Half Pipe Jackets (396)
Champions: Chris Grice, Ward Vessel and Exchanger; Andrew Rentsch, Huntsman
Half pipe reactors are used frequently in petroleum refining and chemical processing plants. Due to the characteristics of their construction this reactor design can develop stress corrosion cracking (SCC) under the half pipe often due to the coolant chemistry. SCC causes leaks and can result in decommissioning with extremely long replacement times. This project will conduct a search of the literature on the topic and include a test program to identify the best options for prevention and repair.
HTHA Damages Simulation Model to Take into Account Inclusions of Affected Welded Areas (362)
Champions: Mark Lozev, Becht; Jose Ramirez, Air Products and Chemicals; Karl-Friedrich Schneider, BASF
The scope of this project is to perform a study to include in the simulation model that was developed in MTI Project 305: Discrimination of the HTHA damages with inclusions by inserting them as a specific modeled item. Validation of the model to samples with actual HTHA damage in the welded area.
Atlas of Microstructures for Alloy 625 (335)
Champions: Gary Whittaker, Nickel Institute; Alvaro Corbato Prieto, Topsoe
A high-quality Atlas of Microstructures of Nickel Alloy 625 will be developed for all product forms and welded product for both corrosion-resisting and high temperature CPI applications.
Corrosion Data Collection for the Most Commonly Used Corrosion-Resistant Nickel Alloys - Phase II (367)
Champion: AsiaTAC members
MTI project 269-Corrosion Data of the Most Commonly Used Corrosion Resistant Nickel Alloys was successfully completed in December 2017. That MTI project was the first joint effort to collect, analyze, and publish corrosion data of nickel alloys from various major global suppliers. Five typical nickel alloys were selected for corrosion data collection, including Alloy C276, Alloy 22, Alloy 625, Alloy 825, and Alloy 600. The contractor of the project was Industrial Technology Research Institute (ITRI) of Taiwan. After carefully analyzing tens of thousands of test data voluntarily provided by the major suppliers, ITRI team carried out lab corrosion rate study then provided a statistically analyzed corrosion rate and standard deviation for each selected alloy. A final report was published in both English and Chinese. This publication has been approved by many MTI members to be extremely useful, especially when they are doing research on these alloys, selecting these alloys for certain applications, or trying to find a suitable supplier for their new project.
Project 367 is phase II of project 269. The purpose of this new project is to continue the successful effort and collect corrosion data for more nickel alloys of interest by the industry.
Duplex Stainless Steel Welds at Elevated Temperatures (391)
Champions: Anette Hansson, Topsoe; John Houben, BP; Jennifer Larimore, Chemours
Following project 307 (Literature search and review of DSS at Short Term Elevated Temperatures), and Project 364 (Duplex Stainless Steels at Elevated Temperatures), additional work is needed to evaluate the effects of short-term elevated temperatures on DSS welds and HAZ. This follow-up project will evaluate an array of 2205 welds after short term exposures at elevated temperatures.
Heat treatments of welded SS2205 samples shall be conducted. The exposed samples shall be examined by impact testing at -40oC/oF, hardness measurements at room temperature in base metal, HAZ and weld material, and tensile testing at room temperature and at elevated temperature.
Corrosion testing of weldments according to ASTM A923 Method C shall also be conducted to determine if there is significant precipitation of detrimental phases.
Guidance for Failure Mechanisms – Pulp & Paper Processing (410)
Champions: Jeremy Nelson and Mathew Richardson, Koch Industries
This project will create a guideline for failure mechanisms in the pulp and paper industry. This reference will include generic pulp and paper unit Process Flow Diagrams with the applicable damage mechanisms for each system in the process. Specifically, it will include the following mechanisms which are not available elsewhere: Continuous Digester Caustic Stress Corrosion Cracking inspection techniques and repairs; Sulfur Stress Corrosion Cracking (Turpentine Systems); Stress Assisted Corrosion; Recovery Boiler Tube Near Drum Corrosion; Flow Accelerated Corrosion; Digester blowline damage mechanisms; Batch Digester / Hot Plate Corrosion update; GRP/FRP equipment damage mechanisms; Black Liquor Recovery Boiler mechanisms.
High Temperature - Low Chloride Pitting, Crevice Corrosion and SCC (358)
Champions: Rodrigo Signorelli and Bjorn Helmersson, Outokumpu
The project proposes an investigation of stainless steels corrosion resistance to Pitting, Crevice and SCC resistance in temperatures above 90oC (194oF) and low chloride amounts. The aim is to complete the existing engineering diagrams defining the temperature-chloride content boundaries for these corrosion mechanisms.
The full list of funded MTI projects and descriptions can be found here: Funded Projects - MTI Global (mti-global.org). Nonmembers can also find some of our completed project publications here: Public Library - MTI Global (mti-global.org), and many other resources are available to both members and nonmembers at www.mti-global.org.
Help us raise awareness today and throughout the year by sharing some of MTI’s current initiatives and exploring some of our past valuable solutions!