TA2 titanium plate true and false discrimination| 5-Step Depth Discrimination Guide

Read TA2Titanium PlateIdentification of true and false: 4 types of fake means + 5-step identification method + 3 sets of acceptance criteria Many purchasers in the chemical equipment industry have stepped on the pit of titanium procurement.In order to reduce the procurement cost, the person in charge of the equipment purchased "TA2" which was much lower than the market price.Titanium PlateFrequent cracking during subsequent plate welding, The production line was forced to shut down, The resulting economic losses, Far more than the cost of material procurement savings.This is also a problem that many titanium purchases will encounter:Titanium PlateHigh appearance similarity, It is difficult to distinguish the quality of materials simply by relying on the naked eye, Only by means of spectral detection, Can accurately determine whether the material is up to standard.

TA2 Industrial pureTitanium Plateis the largest domestic industrial consumptionTitanium PlateMaterials are widely used in chemical equipment, marine engineering, medical equipment, aerospace and other scenarios.The huge market demand also makes TA2titanium plateIt has become a titanium material category with more fakes on the market. Every year, enterprises purchase unqualified TA2.titanium plateIt causes problems such as early failure of equipment, shutdown and maintenance.This article systematically explains TA2 from three dimensions: common fraud methods in the market, practical identification methods and grading acceptance standards.titanium plateTrue and false identification knowledge helps procurement and equipment technicians avoid material selection risks.

According to industry statistics, TA2titanium plateConsumption accounts for more than 60% of the total industrial pure titanium plate in China, and the market demand is huge.TA2 corresponds to Gr2 grade in GB/T 3620.1, and has three core characteristics: excellent corrosion resistance, outstanding stability in oxidizing medium, seawater and weak acid conditions;Low density, density of 4.51g/cm³, tensile strength ≥ 345MPa, specific strength better than stainless steel;Good plasticity, welding, cold forming excellent performance, can be processed into various types of special-shaped components.

The market conditions will fluctuate with the raw materials, and the prices of TA2 titanium plates of different specifications have obvious ranges.Hot-rolled 3-8mm TA2 titanium plate mainstream market in 65-70 yuan/kg, quoted below 55 yuan/kg need to be vigilant;0.5-3mm cold-rolled TA2 titanium plate market 75-85 yuan/kg, below 65 yuan/kg there is quality risk;10-30mm medium thickness TA2 titanium plate price 70-80 yuan/kg, less than 60 yuan/kg need to be cautious;TA2 titanium coil market price 75-85 yuan/kg, less than 65 yuan/kg to focus on checking the material.generally speaking, If the quotation is more than 20% lower than the average market price, There is a high probability of material or size theft, Quality hidden danger brought by low price, It will greatly increase the long-term use cost of equipment.

There are four main ways to fake TA2 titanium plates on the market.The first is brand replacement., TA1 titanium plate is used as TA2 titanium plate, They look almost identical., But TA1 plate strength is low, Use in pressure-bearing equipment will leave safety hazards, Need to detect iron spectrally, oxygen, Nitrogen content can distinguish.The second is recycling waste blending, Production of sheet metal by recycling titanium scrap, internal iron plate, oxygen, nitrogen, Hydrogen impurity exceeding standard, Material brittleness increases, Processing welding is easy to crack, The fracture grain structure can be observed, Cooperate with the material test report.The third type is thickness negative tolerance shrinkage, The marked thickness of the plate does not conform to the actual thickness, For example, the nominal thickness of 10mm plate is only 9.2 mm, Insufficient effective load-bearing section of sheet metal, It can be detected by micrometer multi-point measurement.The fourth method of falsification is titanium plating on stainless steel surface, Appearance and titanium plate height similar, But the substrate is stainless steel in nature., Corrosion resistance is completely below titanium standards, Spectral detection must be used, Check iron content for identification.

For the above fraud methods, a five-step identification process can be adopted.Step 1 Price Evaluation, Quotations that are 20% lower than the average market price are preferentially excluded, Preference is given to suppliers whose offers fluctuate 10% above or below the market median.Step 2 Check the quality assurance document, Qualified TA2 titanium plates will be accompanied by MTC material certificate, Certificate contains chemical composition, Mechanical properties measured data.Step 3 Appearance Visual Inspection, Qualified acid-washed TA2 titanium plate shows uniform silver-white metallic luster, Poor quality plate surface roughness, Oxidation is severe.Step 4 Thickness measurement, Multi-point measurement of four corners and center position of plate with micrometer, The thickness deviation exceeds 5% and needs to be rechecked.Step 5 Spectral detection, Determination of iron by handheld X-ray fluorescence spectrometer, oxygen, nitrogen and other key elements, Compare with GB/T 3620.1 to determine whether the material meets the standard, and is that core mean for identifying authenticity.

According to GB/T 3620.1 standard, TA2 titanium plate key element control range: iron element ≤0.30%, too high content will bring hot brittleness, welding easy to crack;Oxygen element ≤0.25%, oxygen content increase will reduce the plasticity of the plate;Nitrogen element ≤0.03%, trace nitrogen exceeding the standard will cause material embrittlement;Carbon element ≤0.08%, carbon exceeding the standard is easy to produce welding hot cracks;Hydrogen element ≤0.015%, hydrogen exceeding the standard will cause hydrogen embrittlement problems.

The acceptance requirements of TA2 titanium plate are different in different use scenarios.general chemical industry, Ocean engineering and other conventional industrial scenarios, Acceptance of chemical composition according to GB/T 3620.1, Mechanical properties Tensile strength ≥345MPa, Yield strength ≥275MPa, Thickness tolerance complies with GB/T 3621, The acceptance method is to check the material certificate plus sampling spectrum reinspection.pressure vessel, Heat exchanger and other important equipment operating conditions, Spectral retesting and mechanical property testing are required for each batch, The deviation of measured thickness shall be controlled within 3%, Third party organizations can be entrusted to test and spot check.nuclear power, aviation, Critical scenarios like medical care, It is required to inspect spectrum and mechanical properties batch by batch, Thickness deviation controlled within 1%, Use multiple third-party testing, With ultrasonic flaw detection to check the internal defects of the plate.

In the absence of detection instruments on the scene, can also be a simple auxiliary judgment.Qualified pickling TA2 titanium plate color uniform silver white;Tap plate, pure titanium sound crisp;Laser cutting plate edge smooth, burr less.However, these methods can only be used as preliminary references and cannot replace spectral detection.

Relying on Baoji China Titanium Valley Industrial Advantage, Shaanxi Qianyi Tuoda Technology Co., Ltd. supplies TA2 titanium plate, Material list and test report attached to each batch of products, Equipped with spectrometer, Ultrasonic flaw detection equipment, Test data can be traced.Support customers to verify the thickness of plates on site before shipment, Appearance and Material, Strict control of sheet quality, Avoid brand substitution, insufficient thickness, Quality problems such as excessive impurities, for the chemical, Offshore engineering and other industries to provide customers with stable and reliable titanium supporting solutions.

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