I. Core Material Positioning: A "Commonly Used" Type of Commercial Pure Titanium with Outstanding Overall Performance
Titanium Grade 2 (official code UNS R50400) is one of the most widely used commercial pure titanium materials. Its core highlights are clear: excellent corrosion resistance, lightweight, and high ductility (it can be bent and shaped without easily breaking). It is particularly practical in scenarios requiring "resistance to harsh environments," and it strikes a good balance between strength, corrosion resistance, and versatility, making it suitable for use across many industries.
II. Basic Characteristics: 99% High Purity, Corrosion Resistance Relies on a "Natural Protective Film"
Composition and Performance
It contains at least 99% Titanium Grade 2, with only slight differences in oxygen and iron content. This subtle difference allows it to maintain the strength and ductility required for industrial applications, and in many environments, its corrosion resistance is even stronger than stainless steel.
Corrosion Resistance Principle
Its corrosion resistance is due to the automatic formation of a stable "protective oxide film" on its surface in the presence of oxygen. This membrane acts like a "natural protective shield," helping it resist oxidizing, neutral, and mildly reducing environments. It can also withstand corrosion from seawater, chlorides (such as components in brine), and many industrial acids (like nitric acid and chromic acid). It can handle both humid marine environments and acid-contact scenarios in chemical production.
III. Processing and Heat Treatment: Simple Operation, Pay Attention to "Anti-Oxidation" During Welding
This material is easy to process, with clear methods and requirements:
Shaping and Processing
It can be easily cold-worked (shaped at room temperature, such as bending) and machined (such as cutting and drilling), and can also be successfully hot-worked (shaped after heating)—the best results are achieved when the temperature is controlled between 400°F and 600°F (approximately 204°C to 316°C).
Heat Treatment
Stress Relief Treatment: If the material has internal stress after processing, heat it to 900°F~1100°F (approximately 482°C~593°C), then cool it slowly or with air.
Annealing Treatment: To maintain good ductility, annealing is necessary—heat to 1200°F~1400°F (approximately 649°C~760°C). This is a crucial step.
Welding Requirements
During welding, an inert gas (such as argon, helium, or a mixture of both) must be used to protect the weld area; otherwise, the material will absorb oxygen and become brittle. MIG welding (Metal Inert Gas Welding) or TIG welding (Tungsten Inert Gas Welding) is recommended, as it does not require preheating or post-weld heat treatment, making the process simpler than for many other materials.
IV. Applicable Industries and Scenarios: Specifically Targeting Industries with "Lightweight + Corrosion Resistance" Needs
Because of its low density and high strength-to-weight ratio (lightweight yet strong), it is particularly popular in industries requiring these properties, including:
Chemical Processing
Resistant to various corrosive chemicals, commonly used in reactors (containers for chemical reactions), heat exchangers (equipment for transferring heat), and pipelines.
Oil & Gas
Suitable for extreme environments, such as those involving contact with highly corrosive chemicals or high salt concentrations.
Marine Industry
Resistant to seawater corrosion, suitable for seawater desalination equipment.
Aerospace Exploration
Perfect for fuselage or engine components, ensuring durability without adding unnecessary weight.
Medical Industry
Good biocompatibility (does not cause rejection) and corrosion resistance, therefore commonly used in surgical implants (such as artificial joints) and medical devices.
Temperature Adaptability
It exhibits good shock resistance even at low temperatures. According to ASME boiler and pressure vessel standards, it can be used down to -75°F (approximately -59°C); continuous use can reach up to 800°F (approximately 427°C), and occasional short-term use can withstand up to 1000°F (approximately 538°C).
That concludes the information regarding Titanium Grade 2.
Tel: +86-29-89506568
WA/Mob: +86-17778976690
Email: linhui@lhtitanium.com
