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How to test the authenticity of stainless steel hydraulic hinge

2023-06-28

AOSITE

Stainless steel hydraulic hinges are primarily used as cabinet door hinges for cabinets and bathrooms. Customers opt for these hinges mainly for their anti-rust functionality. However, it can be challenging to differentiate between the commonly available hinge materials in the market – cold-rolled steel plates, stainless steel 201, and stainless steel 304. Cold-rolled steel plates are relatively easy to identify with the naked eye, while distinguishing between materials like 201 and 304 proves more difficult due to their similar raw materials, polishing treatments, and structures.

One significant disparity between 201 and 304 lies in their price difference based on raw materials. This price variation often concerns customers, as they fear paying for 201 or iron products while expecting to purchase 304 at a higher price. Presently, stainless steel hydraulic hinges vary in price, ranging from more than one yuan to several dollars in the market. Some customers even contact me personally to inquire about the availability of 304 stainless steel hydraulic hinges. It can be quite disheartening! Just imagine the market price of a ton of stainless steel materials and the cost of a hydraulic cylinder. Even without considering the raw material expenses, a hinge costs more than one yuan to produce when factoring in the additional costs of manual assembly and stamping machine usage. So, it's perplexing how a stainless steel hydraulic hinge can be priced at just one yuan.

Many customers believe that a smooth and shiny polished surface signifies a stainless steel hinge. In reality, a hinge made of genuine stainless steel material appears dull and lackluster. Some customers even resort to using special stainless steel potions to test the authenticity of the hinges. However, I must responsibly inform you that the potion test only yields a 50% success rate for polished stainless steel products. This is due to the presence of an anti-rust film on the product's surface. Unless this film is completely removed before conducting the potion test, the success rate remains relatively low. Scratching off the anti-rust film and then conducting the potion test significantly improves the success rate.

There is a more direct method to determine the quality of the raw materials, provided one is willing to go through the trouble and has the necessary tools. This involves grinding the raw materials using a grinding machine and assessing the sparks produced during the process. The following points explain how to interpret these sparks:

1. Intermittent and scattered polished sparks indicate the use of iron material.

2. Concentrated, thin, and elongated sparks resembling a line suggest a material of quality above 201.

3. Concentrated spark points aligned on a short and thin line signify the use of material of quality above 304.

By utilizing these means, one can effectively determine the quality and type of materials used in stainless steel hydraulic hinges.

If you want to test the authenticity of stainless steel hydraulic hinge, start by checking for magnetism, weight and visual inspection for any signs of rust or corrosion.

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