Characteristics and applications of spring steel strips

Shandong Xinhe International Trade Co., Ltd2022-07-21

1. 65, 70, 85: High strength, hardness, yield ratio can be obtained, but the hardenability is small, the heat resistance is not good, and the ability to withstand dynamic and fatigue loads is low. It is widely used, but it is mostly used for working temperature Small springs that are not tall or larger springs that are less critical. Such as springs for automobiles, tractors, railway vehicles and general machinery

The composition of 65Mn is simple, and its hardenability, comprehensive mechanical properties, decarburization and other process properties are better than carbon steel, but it is more sensitive to overheating, has temper brittleness, and is prone to cracks during quenching. The price is low and the dosage is large. Manufacture of various small-section flat springs, round springs, springs, etc., as well as valve springs, spring rings, shock absorbers, clutch reeds, brake springs, etc.

2. 55Si2Mn, 60Si2Mn, 60Si2MnA have high silicon content (Wsi) (up to 2.00%),

High strength and good elasticity. Good anti-tempering stability. Easy to decarburize and graphitize. Hardenability is not high.

The main spring steel type, has a wide range of uses. Manufacture of various springs, such as leaf springs, coil springs for automobiles, locomotives and tractors, cylinder safety valve springs and some important springs that work under high stress, and springs that are severely worn.

55Si2MnB Due to the boron content, its hardenability is obviously improved. Front and rear suspension springs and auxiliary springs of light and medium vehicles.

55Si2MnB is a steel grade developed by my country. Its hardenability, comprehensive mechanical properties and fatigue properties are better than 60Si2Mn steel. It is mainly used for the manufacture of leaf springs for medium and small cars. 

3. 60Si2CrA 60Si2CrVA

High strength spring steel. High hardenability, good heat treatment process performance. Due to the high strength, the important large springs with large internal stress and large manufacturing loads should be handled in time after the springs are rolled. 60Si2CrA can be used to make steam turbine seal springs, regulating springs, condenser support springs, high-pressure water pump disc springs, etc. 60Si2CrVA steel also makes very important springs, such as springs for conventional weapons and springs.

4. 55CrMnA

The outstanding advantages of 60CrMnA are good hardenability, in addition to good thermal processing properties, comprehensive mechanical properties, and anti-decarburization properties. Various important springs with large cross-sections, such as large leaf springs and coil springs for automobiles and locomotives.

For more information, please contact me.

Company: Shandong Xinhe International Trade Co., Ltd.

Contact: Lucy Li

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Email: li@sdxinheguoji.com