The development of human civilization and the progress of society are closely related to metal materials. After the Stone Age, the Bronze Age and the Iron Age have all been marked by the application of metal materials. Modern, a wide variety of metal materials has become an important material basis for the development of human society. Type: Metal materials are usually classified into ferrous metals, non-ferrous metals and specialty metal materials. 1 ferrous metal is also called steel material, including industrial pure iron containing more than 90% of iron, 2% to 4% of carbon containing carbon, carbon steel containing less than 2% carbon, and structural steel, stainless steel and heat resistant for various purposes. Steel, high temperature alloy, stainless steel, precision alloy, etc. The broad ferrous metals also include chromium, manganese and their alloys.
2 Non-ferrous metals refer to all metals and their alloys except iron, chromium and manganese. They are usually classified into light metals, heavy metals, precious metals, semi-metals, rare metals and rare earth metals. Non-ferrous alloys generally have higher strength and hardness than pure metals, and have large electrical resistance and small temperature coefficient of resistance. 3 special metal materials include structural metal materials and functional metal materials for different purposes. Among them are amorphous metal materials obtained by rapid condensation process, as well as quasi-crystal, microcrystalline, nanocrystalline metal materials, etc.; and special functional alloys such as stealth, hydrogen, superconductivity, shape memory, wear resistance, vibration damping and the like. And metal matrix composite materials. Performance: Generally divided into process performance and performance.
The so-called process performance refers to the performance of metal materials under the specified cold and hot processing conditions during the manufacturing process. The technical performance of metal materials determines its adaptability to the forming process during the manufacturing process. Due to different processing conditions, the required process properties are different, such as casting properties, weldability, forgeability, heat treatment properties, and machinability. The so-called performance refers to the performance of metal parts under the conditions of use, including mechanical properties, physical properties, chemical properties, and the like. The performance of metal materials determines its range of use and service life. In the mechanical manufacturing industry, general mechanical parts are used in normal temperature, normal pressure and very strong corrosive media, and each mechanical part will be subjected to different loads during use.
The resistance of metal materials to damage under load is called mechanical properties (also referred to as mechanical properties in the past). The mechanical properties of metal materials are the main basis for the design and selection of parts. The applied load properties are different (such as tensile, compression, torsion, impact, cyclic loading, etc.), and the mechanical properties required for the metal material will also be different. Common mechanical properties include: strength, plasticity, hardness, impact toughness, multiple impact resistance and fatigue limit.
This product is used in collecting high-quality DNA/RNA samples from saliva and can be used in various biological experiments such as enzymatic hydrolysis, PCR, and next-generation sequencing. It is widely used for the collection and preservation of specimens in hospitals, scientific research institutions, and families. The collection process is easy and painless, and will not cause any damage or discomfort to the human body.
Features
♦ Contactless sample collection, less risk for healthcare workers.
♦ Suitable for all kinds of people, easy method to collect samples.
♦ Easy to use, non-invasive collection.
♦ Use medical PP material.
The Saliva Collection Kit is a complete kit made out of 100% polypropylene.
The funnel has been engineered to be intuitively easy to use and specifically designed to reduce user self-collection error by preventing flowback.
When saliva is captured in a sterile container, COVID-19 is stable at room temperature for up to seven days without the need for expensive reagents.
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Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yongyuelab.com