60Si2MnA GB 3525-1983 Cold rolled steel wire

60Si2MnA GB 3525-1983 cold rolled steel wire is an alloy spring steel, its hardenability is high, after quenching and tempering treatment, has a high strength and elastic limit, as well as a high yield ratio and anti-relaxation ability. The steel is mainly used to manufacture various plate springs, coil springs, safety valve springs, damping springs and instrument springs with thickness less than 10mm and diameter less than 25mm that work below 250℃.

Material designation	60Si2MnA
Correspondence standard	GB 3525-1983 Cold-rolled spring and steel strips
Sort out	Alloy steel
Property	Elastic hardenability
Tag	Spring steel
Instructions	The chemical composition of this grade shall comply with the provisions of GB/T 1222-1975. The steel is a widely used spring steel with good hardenability, high strength and elastic limit after quenching + tempering, high yield ratio and anti-relaxation ability, and high tempering stability. However, the decarbonization tendency is large, the cold deformation is poor, and the cutting performance is poor. It is mainly used in the manufacture of various elastic retainers, rings and springs that work below 250°C, with a thickness of less than 10mm and a diameter of less than 25mm. The amount of steel in the fastener industry is smaller than 65Mn, mainly used for the production of various elastic gaskets, rings, pins and other products. Generally not used for the production of bolts, screws, nuts. Selection suggestions: All kinds of elastic washers, pins and clasp, etc., working in a non-corrosive environment, strength 42~54HRC, recommended use. ①This standard is applicable to cold rolled steel strips of spring steel and tool steel. For the manufacture of spring, cutting tools, tape and other products ② Classification and code: - According to manufacturing accuracy: P= ordinary precision steel strip; K= steel strip with high width accuracy; H= steel strip with high thickness accuracy; J= steel strip with high thickness accuracy; KH= Steel strip with high accuracy in width and thickness - Divided by surface quality: Ⅰ=Ⅰ group steel strip; Ⅱ= Group Ⅱ steel strip - Divided by edge state: Q= cut edge steel strip; BQ= untrimmed steel strip - Divided by material status: Y= chilled steel strip; T= annealed steel strip; QT= spheroidized annealed steel strip
Density	7.74 g/cm3

60Si2MnA_(2) Cold_rolled_steel_wire

60Si2MnA mechanical properties

Thickness t mm	Tensile strength σb Mpa	Elongation or elongation after breaking δ %
0.10~3.00, annealed steel strip	≤880	≥10
0.10~3.00, chilled steel strip	785~1175	-

60Si2MnA GB 3525-1983 cold rolled steel wire is a kind of alloy spring steel with excellent mechanical properties and machining properties, which is widely used in various fields. In the process of use, it is necessary to carry out reasonable heat treatment and surface treatment according to specific requirements, and pay attention to the limitation of its processing performance.

Examples of machined fastener products

60Si2MnA (GB 1222/3525/5218; Some products processed by YB 5058
name	model number	performance rate	specification
Elastic retainer for shaft	GB 894.1-1986	47~54HRC	16~32
Snap ring	6HB 8121-2002	45.5~49.5HRC	25~200

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