60Si2MnA HB /Z 136-2000 alloy steel wire

60Si2MnA HB /Z 136-2000 alloy steel wire has high strength and elastic limit, as well as high yield ratio and anti-relaxation ability. After quenching and tempering treatment, its comprehensive mechanical properties are better, especially the fatigue life is significantly improved.

Material designation	60Si2MnA
Correspondence standard	HB /Z 136-2000 Heat treatment process of aviation structural steel
Sort out	Spring steel
Tag	High strength alloy steel
Instructions	This steel is a versatile spring steel. It has good hardenability, high strength and elastic limit after hardening and tempering heat treatment, high yield ratio and anti-relaxation ability, and high tempering stability. However, this brand has a large decarbonization tendency, cold deformation and poor cutting performance. It is mainly used in the manufacture of various elastic rings, rings and springs that work below 250°C, are less than 10mm thick and less than 25mm in diameter. This grade is generally not used for the production of bolts, screws and nuts.

60Si2MnA_HB_Z_136-2000 alloy_steel_wire

Heat treatment regime 1

Normalizing	Complete (or isothermal) annealing ①		Low temperature annealing (or high temperature tempering)①	Incomplete annealing ①
Heating temperature ② °C	Heating temperature ② °C	Brinell hardness HBS or HBW	Heating temperature ② °C	Heating temperature ② °C
860	860	≤302	680~700	-

① After normalizing, low temperature annealing and high temperature tempering, it should be air cooled. After complete annealing and incomplete annealing, the furnace should be cooled to 650°C or below. Steels with tempering brittleness tendency (chromium steel, chromium nickel steel, chromium manganese silicon steel, chromium manganese silicon nickel steel, etc.) must be air-cooled when the furnace is cooled to 650°C.

② Temperature deviation ±10°C. In special cases, the heating temperature deviation of normalizing, complete (or isothermal) annealing, low temperature annealing (or high temperature tempering), and incomplete annealing is allowed to expand to ±20°C.

60Si2MnA HB /Z 136-2000 alloy steel wire is a spring steel material with excellent properties and has a wide application prospect. In the process of use, it is necessary to fully consider its material characteristics and application environment to give full play to its performance advantages.

Heat treatment regime 2

Quench		Temper
Heating temperature ① °C	Cooling medium	Tensile strength MPa	Hardness ② HRC	Heating temperature ③ °C	Cooling Medium ④
860	oil	-	31~36	580~630	Oil, Water
			36~40	530~580
			40~45	470~520
			44~48	450~500
			46~51	420~470

① The deviation of quenching temperature and tempering temperature is ±10°C

② The relationship between the strength and hardness of the steel is consistent with HC0-94.

③ Tempering temperature can be appropriately revised according to specific conditions (size of parts, chemical composition of steel, heat treatment methods and equipment characteristics, etc.).

④ When tempering the alkali bath, cool it with hot water above 60°C.

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