MADUR® hardfacing products

Martec

Products

Hardfacing cord

MADUR® hardfacing bead is a continuous, flexible electrode consisting of a nickel core wire and a thick coating of a high-nickel alloy matrix enveloping crushed or spherical molten tungsten carbide grains of various sizes.

When deposited by oxyacetylene welding, the matrix (Nickel base powder) and the Nickel core wire fuse like a brazing alloy, enveloping the tungsten carbide grains to form a compact coating bonded to the substrate.

FUSED TUNGSTEN CARBIDE GRAIN SPECIFICATION
 

REFERENCE SPECIFICATION OF FUSED TUNGSTEN CARBIDE GRAINS AVAILABLE DIAMETERS
Grain size Grain type ø 5 ø 6,5 ø 8
MADUR® 8202 106-150 μm Crushed 15.8202.05 15.8202.06 15.8202.08
MADUR® 8205 106-500 μm Crushed 15.8205.05 15.8205.06 15.8205.08
MADUR® 8208 106-800 μm Crushed 15.8208.05 15.8208.06 15.8208.08
MADUR® 8212 106-1200 μm Crushed 15.8212.05 15.8212.06 15.8212.08
MADUR® 8220 106-2000 μm Crushed 15.8220.06 15.8220.08
MADUR® 8305
Matrix hardness 30 HRC		 106-500 μm Crushed 15.8305.05 15.8305.06 15.8305.08
MADUR® 8308                  Matrix hardness 30 HRC 106-800 μm Crushed 15.8308.05 15.8308.06 15.8308.08

 

SPHERICAL TUNGSTEN CARBIDE
REFERENCE FUSED TUNGSTEN CARBIDE GRAIN SPECIFICATION AVAILABLE DIAMETERS
Grain size Grain type ø 5 ø 6,5 ø 8
MADUR® 9202 45-150 μm Crushed 15.9202.05 15.9202.06 15.9202.08
MADUR® 9205 90-500 μm Crushed 15.9205.05 15.9205.06 15.9205.08
MADUR® 9208 90-800 μm Crushed 15.9208.05 15.9208.06 15.9208.08
MADUR® 9502 40-80 μm
45-150 μm		 Spherical crushed 15.9502.05 15.9502.06 15.9502.08
MADUR® 9505 106-250 μm
250-500 μm		 Spherical crushed 15.9505.05 15.9505.06 15.9505.08
MADUR® 9508 106-400 μm
400-800 μm		 Spherical crushed 15.9508.05 15.9508.06 15.9508.08

Tungsten carbide grains with a higher density than the powder settle to the bottom of the deposit. This deposit, combining ground molten tungsten carbide (grains) or spherical molten tungsten carbide (spheres) and a high-strength brazing alloy, is used in a wide range of industries where abrasion is a problem.

The main user industries are: the ceramics industry (brick and tile factories), oil drilling, mining drilling, foundries, cement works…

This product is designed to protect new parts and surfaces, and to repair worn ones. The aim is to make them resistant to wear, abrasion and corrosion. Any welder can apply it.

It is strongly recommended to deposit powder beforehand to avoid oxidation of the part
to be recharged.

MADUR® beads are applied with an oxy-acetylene torch.