General Information

PT-MAT™ P-NM40S is a metal powder where very hard particles of spherical cast tungsten carbide (SFTC) are mixed with a NiCrBSi alloy matrix specially designed for applications on non-magnetic austenitic stainless steel used in the petroleum industry.
PT-MAT™ P-NM40S can be applied through PTA welding (Plasma Transfer Arc) or laser cladding.


PT-MAT™ P-NM40S is applied through plasma powder surfacing or laser cladding on low alloy to high alloy steel.
Typical applications are equipment submitted to abrasive wear with moderate impact and corrosion.
Very efficient coating for mining applications, industrial fans and down hole drilling equipment (non mag drill collars, stabilizers, radial bearing, kick rings etc.).
This material is also ideal for repair work of previously hard faced equipment.

Composition (weight)

60 % (Ni,Cr,B,Si matrix powder)
40% PT-MAT™ -SFTC (Spherical cast tungsten carbide)

Physical Properties


(Ni,Cr,B,Si matrix powder) 30-35 HRC
PT-MAT™ -SFTC: 2650-3000 HV0,1

Melting point:

(Ni,Cr,B,Si matrix powder) < 1200°C
PT-MAT™ -SFTC 2860°C


(Ni,Cr,B,Si matrix powder) 8.4 g/cm³
PT-MAT™ -SFTC 16.4 g/cm³

Apparent density (Hall): 6.9 g/cm3
Flow rate (Hall) : 9-10 seconds
Typical sizing available : 45-150 microns (+325-100 mesh) or 53-180 microns (+270-80 mesh).


10 lbs plastic bottles.
Other packaging available on request (plastic or metal pails).

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