60Si2MnA GB /T 1222-2007 spring wire

60Si2MnA spring wire is a kind of alloy spring wire with excellent comprehensive properties, which is widely used in automobile, machinery, aerospace and other fields.

Material designation	60Si2MnA
China ISC	A11603
Correspondence standard	GB /T 1222-2007 Spring Steels
Brand/Supply source	China ->HeNan
Sort out	Spring steel
property	Elasticity
Tag	High quality alloy structural steel fastener material
Instructions	• Due to its high silicon content, its strength and elastic limit are higher than 55Si2Mn steel, good tempering resistance, low hardenability, easy decarbonization and graphitization • Widely used, mainly used as damping plate springs, coil springs, cylinder safety valve springs, check valve springs of automobiles, locomotives and tractors, and also used to make important springs and anti-wear springs that bear alternating loads and work under high stress • The amount of steel in the fastener industry is smaller than 65Mn, mainly used to produce all kinds of elastic gaskets, rings, pins and other products, such as the standard GB/T 94.1 standard this grade can be used to produce the national standard GB93 spring washer (for the manufacturing of spring washer trapeze steel wire specifications see the standard GB 5222), performance: Quenching and tempering 40~50HRC or 392~513HV, the surface of the spring pad needs oxidation and phosphating; After galvanized, the spring pad must be treated with hydrogen displacement immediately. 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. • This standard applies to spring round steel and square steel (referred to as bar) with a diameter or side length not greater than 100mm, spring flat steel with a thickness not greater than 40mm, spring steel wire with a diameter not greater than 25mm (excluding oil quenched and tempered spring wire wire wire (YB/T 5365)). Rods with diameters or side lengths greater than 100mm, flat steel with thicknesses greater than 40mm and rods with diameters greater than 25mm can also be supplied after negotiation between the supply and demand parties. • The grades and chemical compositions specified in this standard also apply to ingot, billet and its products
Density	7.74g/cm3

60Si2MnA spring_wire

60Si2MnA Chemical Element content (%)

Ingredient	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum value	0.56	1.6	0.7	-	-	-	-	-
Maximum value	0.64	2	1	0.025	0.025	0.35	0.35	0.25

① According to the requirements of the demander and indicated in the contract, the residual copper content in the steel should not be greater than 0.20%

Note:

60Si2MnA spring steel wire has overheating sensitivity and tempering brittleness tendency, and it is easy to form cracks when water quenching, so it is necessary to strictly control the temperature and time during the heat treatment process.

The decarbonization tendency of the steel wire is large, which has obvious damage to the wear resistance and fatigue resistance, so it is necessary to pay attention to avoid the occurrence of decarbonization in the process of processing and use.

Examples of machined fastener products

60Si2MnA (GB 1222/3525/5218; Some products processed by YB 5058
name	Model number	Performance class	specification
Elastic retainer for shaft	GB 894.1-1986	47~54HRC	16~32
Snap ring	6HB 8121-2002	45.5~49.5HRC	25~200
Butterfly spring	GB/T 1972-2005	E=206000N/mm2	-
Elastic retainer for hole	GB/T 893-2017	40~54HRC	-
Open elastic retainer	GB/T 896-2020	40~54HRC	-

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