VRN TI-HARD
The superior wear resistance is as a result of the additional uniform dispersion of high hardness Titanium Carbide particles throughout the steel, this results in a steel of 450 BHN which has an abrasion resistance over 1.5 times greater than conventional 500 BHN grades, with the added advantages of improved workability of 450 BHN plate.  

  2.    MECHANICAL PROPERTIES.  (TYPICAL VALUES)

2.1 VRN Ti-Hard is not produced to meet specific mechanical requirements.  However, typical values will be as follows for 25.0 mm thick plate: 

 
2.2     Hardness
Typical hardness values will be as follows: 

 
2.3    Charpy V. Notch Impact Tests.
20-30 Joules at 0^oC   

3.     FABRICATION

3.1    Cold Forming.  Although Ti-Hard has excellent through thickness hardness, the steel still has a high degree of toughness.  The following bending radii are suggested:
 

 
3.2    Hot Working.  The steel obtains its properties through controlled heat treatment and should therefore not be hot worked at temperatures exceeding 300^oC.

3.3    Flame Cutting.  Ti-Hard may be readily cut using any of the conventional cutting methods such as oxy-fuel, plasma or laser.

3.4    Weldability.  Ti-Hard is readily weldable using any of the usual arc welding processes.  Low hydrogen procedures and low tensile strength consumable should be used.
Welding consumables and procedures are the same as for all other Macsteel VRN grades of wear resistant steels.  

4.    GENERAL

VRN Ti-Hard derives its exceptional wear resistance due to the addition of titanium to the molten steel.  On solidification titanium carbide particles are formed and disperse uniformly throughout the plate.

The table below illustrates the relationship between titanium carbide and other carbides on the Vickers hardness scale.