1. Grade 4.6 and 4.8: Low strength but low processability and cost, so they are often used in some general mechanical assembly, such as furniture, lamps, hardware accessories, etc.
2. Grade 5.8: Compared with materials of grades 4.6 and 4.8, it has higher strength and is suitable for some environments with smaller loads, such as bicycles, motorcycles, cars, etc.
3. Grade 8.8: Higher strength, suitable for occasions with higher strength requirements, such as bridges, rail transit systems, mechanical equipment, etc.
4. Grade 10.9: Extremely high strength, often used in occasions with higher strength requirements, such as aircraft, high-speed trains, large mechanical equipment, etc.
Stainless steel: Good corrosion resistance; suitable for occasions with corrosion resistance requirements, such as ships, food processing, medical equipment, etc.
Tabular display of fastener material performance grades
|
Grade |
Strength level |
Corrosion resistance |
Temperature range |
|
4.6, 4.8 |
Low strength |
Poor |
-40°C~+80°C |
|
5.8 |
Medium strength |
General |
-40°C~+120°C |
|
8.8 |
High strength |
Good |
-40°C~+150°C |
|
10.9 |
Ultra-high strength |
Excellent |
-40°C~+200°C |
|
Stainless steel |
Not applicable |
Excellent |
-253°C~+600°C |