Titanium alloys can be categorized into three main groups based on their phase composition: alpha alloys, (alpha+beta) alloys and beta alloys. Each alloy type has different properties and application areas.
α alloys α alloys contain a certain amount of stabilized α-phase elements and are mainly composed of the α-phase in the equilibrium state. This type of alloy has the following characteristics:
Advantages: low specific gravity, good heat strength, good weldability, excellent corrosion resistance.
Disadvantages: low strength at room temperature.
Applications: commonly used as heat and corrosion resistant materials.
Classification:
Full alpha alloys (e.g. TA7)
Near-alpha alloys (e.g. Ti-8Al-1Mo-1V)
α-alloys containing small amounts of compounds (e.g. Ti-2.5Cu)
(α+β) alloys (α+β) alloys contain stabilized α-phase and β-phase elements, and in equilibrium consist of both α-phase and β-phase together. They are characterized as follows:
Advantages: medium strength, which can be improved by heat treatment.
Disadvantages: Poor welding performance.
Applications: Widely used in various engineering fields, especially Ti-6Al-4V alloy, which accounts for more than half of all titanium alloys.
Beta Alloys Beta alloys contain a large number of stabilizing beta-phase elements, which are capable of maintaining the beta phase at high temperatures up to room temperature. Their properties include:
Advantages: heat treatable, excellent plasticity, tensile strength can be aged to 130 to 140 kgf/mm².
Disadvantages: high specific gravity, high cost, poor weldability, difficult processing.
Applications: mainly used for high strength, high toughness materials.
Titanium bar grade and state
Common grades of titanium rods include:
GR1, GR2, GR3, GR5, GR7, GR12.
The production state of titanium rods can be categorized as follows:
Hot working condition (R)
Cold working condition (Y)
Annealed condition (M)
Solid solution state (ST)
Titanium rods executive standards
Titanium rods conform to the following standards:
ASTM B348
ASTM F136
ASTM F67
AMS4928
Product Manufacturing Capabilities
Machined bars: customized lengths ranging from 300mm to 6000mm.
Annealed condition bars: non-customized lengths from 300mm to 2000mm, customized or doubled lengths should be within the range of non-customized lengths, with an allowable deviation of +20mm; doubled lengths should also be calculated for the amount of cuts in the bar, with each cut being 5mm. customized or doubled lengths should be specified in the order form.
