C60 Steel Grade
C60 Steel Grade
C60 Steel Grade
C60 Steel Grade
C60 Steel Grade

C60 Steel Grade

Application: Manufacturing of cutting tools Machinery parts Automotive industry Construction industry Power industry

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Product Introduction

C60 Steel Grade

Chemical composition:

Carbon C: 0.57~0.65%

Silicon Si: ≤0.40%

Manganese Mn: 0.60~0.90%

P: ≤0.045%

Sulfur S: ≤0.045%

Chromium Cr: ≤0.40%

Nickel Ni: ≤0.40%

Molybdenum Mo: ≤0.10%

The heat treatment process of C60 steel is as follows:

10% brine solution with high cooling rate should be used. After the workpiece enters the water, it should be quenched, but not cold, if the workpiece is cold in salt water, it is possible to crack the workpiece, because when the workpiece is cooled to about 180 ° C, the austenite is rapidly transformed into martensite, resulting in excessive organizational stress. Therefore, when the quenched workpiece is quickly cooled to the temperature area, the method of slow cooling should be taken. Because the temperature of the water is difficult to master, it must be operated by experience, when the workpiece in the water stops shaking, the water can be air-cooled (such as oil cooling is better). In addition, the workpiece should be moved into the water should not be static, should be in accordance with the geometric shape of the workpiece, make regular movement. The static cooling medium coupled with the static workpiece leads to uneven hardness, uneven stress and large deformation of the workpiece, and even cracking.

Mechanical properties:

Tensile strength σb (MPa) : ≥675(69) Yield strength σs (MPa) : ≥400(41) elongation δ5 (%) : ≥12 section shrinkage ψ (%) : ≥35 Hardness: no heat treatment ≤255HB; Annealed steel ≤229HB Sample size: sample size is 25mm● Heat treatment specification and metallographic structure: Heat treatment specification: normalizing,810℃. Delivery condition: Delivery in a condition of no heat treatment or heat treatment (annealing, normalizing or high temperature tempering). Where delivery in heat treatment condition is required, it shall be indicated in the contract, and if not indicated, delivery shall be made without heat treatment.