Flat Washers material and classification characteristics industry solutions

Definition of International Standard Flat Washers

A flat washer is a simple mechanical part usually used to adjust the distribution of tightening forces and protect the surface of fittings and connections from greater loads. According to the definitions of DIN125 and ISO 7089, a flat washer is a kind of round, thin plate whose diameter is larger than the hole diameter, usually placed under the nut of a threaded connection or on top of the bolt head of a threaded connection. It disperses the pressure, prevents loosening, cushions vibration, and so on.

Flat washers are commonly used materials

1. Carbon steel flat washers： The most common type of material is carbon steel flat washers, which are usually made from Q235, 65Mn, and other high-quality carbon steel. They are highly hard and strong and suitable for connecting and fixing most mechanical equipment. However, they are also low-corrosion resistant and prone to rust.

2. Stainless steel flat washers： Stainless steel flat washers are made of stainless steel, which has excellent corrosion and high-temperature resistance and can be used in humid environments. Stainless steel material has relatively low hardness and strength and is generally recommended for light loads and high-precision connections.

3. Copper flat washers： A copper flat washer is a metal spring part made of high-quality purple copper material. It has good electrical and thermal conductivity; corrosion and wear resistance are relatively high. Copper flat washers are mainly used for connecting metal parts, such as high-temperature pipes, automobile engines, and electronic equipment.

The application of different materials and performance characteristics of flat washers

1. Carbon steel flat washer application scenario: Carbon steel flat washers are suitable for connecting and fixing most mechanical types of equipment. Their high hardness and strength can withstand enormous loads and pressure. However, they have low resistance to corrosion and need to be prevented from rusting.

2. Stainless steel flat washers Applicable scenes: Stainless steel flat washers suit high humidity, high temperature, low temperature, and strongly corrosive environments. The material has excellent corrosion and high-temperature resistance, but the hardness and strength are relatively low, generally suitable for light loads and high-precision connections.

3. Copper flat washers Applicable scenes: copper flat washers are suitable for high-temperature pipelines, automobile engines, electronic equipment, and other connecting metal parts. Copper flat washers have good electrical and thermal conductivity, corrosion resistance, and wear resistance and can effectively protect the connection and reduce noise.

Plastic flat washers

Plastic flat washers commonly use materials or more: PA66, PA66 +30% glass fiber, PA66 +50% glass fiber, PC, PP, PPS, PVC, PVDF and so on. Plastic flat washers have unique advantages, low production costs, and insulation; on special occasions, they can play the role of carbon steel, and stainless steel can not be replaced with the effect.

Flat washers are commonly used mechanical connection parts. Different materials have different application scenarios and performance characteristics, so flat washers must be selected according to those scenarios. During use, we need to protect the flat washer to avoid damage or failure.

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