Titanium Grade 12 for Chemical and Petrochemical Industries
Oct 21, 2025
What Is Titanium Grade 12
Titanium Grade 12 is a titanium alloy containing molybdenum and nickel (Ti-0.3Mo-0.8Ni), which gives it exceptional corrosion resistance and strength. This alloy has been specifically developed to withstand environments with extreme chemical stresses and high temperatures, making it a preferred choice for the most demanding industrial applications. Titanium Grade 12 combines the best properties of titanium with additional alloying elements, providing enhanced chemical resistance and mechanical stability.
Key Properties
With its outstanding resistance to a variety of chemical media, including acidic and alkaline solutions, Titanium Grade 12 is particularly well-suited for the chemical, petrochemical, and marine industries, where components are subjected to constant corrosive conditions. The molybdenum and nickel additions improve resistance to reducing acids and crevice corrosion compared with unalloyed titanium. This alloy not only offers high strength but also remains robust in extreme environments, making it a long-term material for applications with high safety requirements. Its excellent weldability and machinability expand its application areas and allow precise fabrication of even complex parts.
Typical Applications
Corrosion-resistant components in the chemical and petrochemical industries, shipbuilding and offshore components exposed to extreme saltwater conditions, heat exchanger tubing, and plant components in advanced energy generation systems.
Frequently Asked Questions
What is the composition of Grade 12 titanium? about 0.3 percent molybdenum and 0.8 percent nickel with titanium balance.
Why is Grade 12 used in chemical processing? Its resistance to reducing acids and crevice corrosion exceeds that of unalloyed titanium.
What is the UNS number for Grade 12? R53400.
Which standards cover Grade 12 titanium? Grade 12 is covered by ASTM B265 for sheet, strip and plate, ASTM B348 for bars and billets, ASTM B381 for forgings, and ASTM B861/B862 for seamless and welded pipe, with corresponding ASME SB specifications for pressure-service components.
Is Grade 12 titanium weldable? Yes. Grade 12 can be welded using standard titanium procedures with a matching filler metal such as ERTi-12, which keeps the weld zone resistant to the same reducing acids and chloride media as the parent metal.
How does Grade 12 compare with Grade 2 commercially pure titanium? The molybdenum and nickel additions give Grade 12 higher strength than Grade 2 and better resistance to reducing acids and crevice corrosion in hot chloride and brine service. It is selected when commercially pure grades do not offer enough corrosion margin for the process conditions.
