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中文简体Carriage bolts are a common type of fastener consisting of a head, a screw, and a square neck. The head is either round or square, the screw is an external thread, and the square neck prevents the bolt from rotating. Carriage bolts are available in a variety of materials, each with its unique properties and applications.
1. Plain Carbon Steel:
Plain carbon steel is the most commonly used material for carriage bolts. It offers moderate strength and corrosion resistance at a relatively low cost. Suitable for general environments such as indoor and dry environments.
2. Stainless Steel:
Stainless steel carriage bolts offer good corrosion resistance and are suitable for corrosive environments such as humidity, acids, and alkalis. Common stainless steel grades include 304, 316, and 302.
304 Stainless Steel: It has good corrosion resistance and machinability, and is suitable for general corrosive environments.
316 Stainless Steel: By adding molybdenum to 304 stainless steel, it has better corrosion resistance and is suitable for extreme corrosive environments such as seawater and salt spray.
302 Stainless Steel: It has good corrosion resistance and machinability, but its acid resistance is not as good as 304 stainless steel. It is suitable for general corrosive environments.
3. Copper Alloys:
Copper alloy carriage bolts offer excellent corrosion resistance and conductivity, making them suitable for extreme corrosive environments such as seawater and salt spray. Common copper alloy grades include brass and bronze.
Brass: It has good corrosion resistance and machinability, and is suitable for extreme corrosive environments such as seawater and salt spray.
Bronze: It has good corrosion resistance and wear resistance, and is suitable for extreme corrosive environments such as seawater and salt spray as well as applications requiring conductivity.
4. Other Materials:
Carriage bolts can also be made of materials such as aluminum alloy and titanium alloy for use in special environments or applications.
When selecting a carriage bolt material, the following factors should be considered:
Application Environment: Different materials are suitable for different environments.
Strength Requirements: Different materials have different strengths.
Machinability: Different materials have different machinability.
Price: Different materials have different prices.
Here is a comparison of some common carriage bolt materials:
