Isc T21202 Steel Surface Cutting Process - China

ISC T21202 steel (corresponding grade Cr12Mo1V1) is a high-carbon, high-chromium cold work die steel under the Chinese standard GB/T 1299-2014, belonging to the ledeburitic steel type.

This material possesses the following key characteristics: Analysis of the Machinability of ISC T21202 Steel 2.1 Machining Challenges

ISC T21202 steel is a difficult-to-machine material.

The main challenges include: 1 - **High Hardness and Wear Resistance: ** High carbon and chromium content leads to high cutting forces and rapid tool wear.

2 - **Leeds Burden Structure: ** Eutectic carbides present in the casting structure affect cutting performance.

3 - **Work Hardening Tendency: ** Work-hardened layers are easily generated during cutting, increasing the difficulty of subsequent machining.

4 - **Poor Thermal Conductivity: ** Cutting heat is concentrated in the tool tip area, accelerating tool failure.

2.2 Machinability Comparison

According to tool steel classification data, the machinability rating of high-carbon, high-chromium cold work tool steels (such as the D2 and T21202 series) is 40-60%, significantly lower than that of water-hardening tool steels (100%) and oil/air-hardening tool steels.

As a high-performance cold work die steel, the surface machining process of ISC T21202 steel requires comprehensive consideration of material properties, tool selection, and optimization of machining parameters.

By employing carbide cutting tools, appropriate cutting parameters, and advanced machining techniques, the difficulty in machining this material can be effectively overcome, resulting in a high-quality surface that meets the requirements of precision mold manufacturing.

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

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