Surface Treatment

Explore our diverse finishing options designed to improve both the visual appeal and functional durability of materials.
Contact info
  • kushal@kushalmetal.net
  • kushalmetal09@gmail.com
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INTRODUCTION

There are various ways in which the surface of the Tools Steel can achieve higher hardness. This process varies from one steel to another and careful study must be made on the steel, its properties and the application to which they will be put before a final decision on the method is reached.

  • Nitriding

  • Flame Hardening

  • Carburizing

  • Powder carburizing

  • Gas carburizing

  • Nitro carburizing

Special treatment like sub zero cooling are used to improve the tool life.

SURFACE TREATMENT METHODS

Method Temperature (°C) Properties Achieved Layer Thickness Surface Hardness (HV)
Carburizing
(Box, Salt Bath, Gas, Carbonitriding) 		860–900
860–900
890–950
820–870 		Excellent surface hardness
Suitable for low carbon steels 		Up to 2 mm Up to 900
Nitriding
(Gas, Salt Bath, Nitrocarburizing, Ion Nitriding) 		510–530
570
570 		High surface hardness
Excellent wear resistance
Retains hardness after tempering 		Up to 1 mm Up to 1200
CVD (Chemical Vapor Deposition) 950–1100 Applied on polished surfaces
Followed by vacuum hardening 		0.006 – 0.009 mm Up to 3500
PVD (Physical Vapor Deposition) 400–500 Applied on hardened & tempered tools
Requires highly polished surface
No dimensional change 		0.002 – 0.005 mm 2000 – 2500
Oxidizing 300–350 Forms protective oxide layer
Used for hot work tool steels 		Up to 0.01 mm -

Enquiry

If you have any questions or would like to enquire please contact us.