(Assab) – Borderline high carbon steel, various uses, for knives better suited for large knives, needing good toughness and shock resistance. Very low wear. The purpose of this research was to evaluate the hardenability of ASSAB ( equivalent to AISI and JIS S45C) steel subjected to the gas. This paper describes the optimisation of the processing parameters for maximum hardened depth of ASSAB (equivalent to AISI ) steel specimens of.

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Gas cementation is a heat treatment surface process by means of carbon diffusing into steel.

Hardenability of ASSAB Steel during Tempering for Punch Holder Applications

This process is carried out in a furnace in a fluidized bed by using media of liquid petroleum gas LPG and nitrogen gas at a temperature of K and various holding times of 7.

70 rapid quenching process is carried out in oil media for sec.

The results shows, that remnant austenite is formed on the specimen with a holding time of 7. Additionally, this gas cementation process when followed by the quenching process is effective in forming the martensite and austenite microstructures. Materials in World Perspective: Aasab of Materials Processing Technology, Vol. Surface and Coatings Technology, Vol. Journal of Magnetism and Magnetic Materials, Vol. Materials Science Forum Volume The results showed that the low yield ratio and high strength can be obtained by proper phase compositions including relative soft phase and hard phase.


Hardenability of ASSAB 760 Steel during Tempering for Punch Holder Applications

asab The mechanical properties can meet requirement of MPa grade low yield ratio structural steel. And performance indexes can meet the requirement of MPa grade low yield ratio structural steel.

Finite difference equations are used for simulation of plate temperature field in roller quenching, and cooling rate in thickness direction is calculated in this paper. Based on improved Asssab model of steel chemical composition and cooling rate, the microstructure constituents and hardness of 30mm thickness pressure vessel steel 07MnNiMoVDR are predicted and calculated with interpolation method.

The experimental verification indicates that the simulation results agree well with the experimental ones. Effects of continuous annealing process on microstructure and properties of Si based cold-rolled TRIP Steel were studied.

The microstructures are ferrite, bainite and asssab austenite and the volume fraction of retained austenite for the tested steel is 9. The rapid quenching process is carried out in an oil media for sec.


In order to remove asab tension in the specimen, the tempering process is carried out in a furnace at a low temperature of K with holding time of 3. The result shows that, the Vickers hardness values can be achieved from to HV.

Therefore, it is confirmed that by using these processes, the hardening of ASSAB steel can be carried out and the punch holder can be manufactured.