SABEL NI-HARD

TECHNICAL PAPERS - SABEL NI-HARD -1, -2

Ni-Hard has, for a long time, been the number one choice for industrial processes demanding a cost effective, wear resistant material. Its well proven abrasion resistance has seen it used in mining, steel, cement, pulp and power industries.

As mill liners, wear plates in crushers, rolls, pump parts, pipes the broad range of properties of Ni-Hard has made it one of the leading abrasion resistant materials in the world.

IN USE

SABEL NI-HARD 1
First hand choice, maximum hardness and abrasion resistance.

SABEL NI-HARD 2
Higher toughness, but lower hardness and abrasion resistance.

CHILLCASTING

In order to further enhance the abrasion resistance and mechanical properties, the wear side of the casting can be cast against a chill plate placed in the mould.

REINFORCEMENT

Is used in "high impact" applications, where dynamic stresses are expected. If a crack should appear in the casting the reinforcement will hold the pieces together until it´s worn out, or a planned change of parts can be made.

MACHINING

Can be machined by grinding and with the use of sintered carbide tools in lathes and mills. When drilling and threads are necessary, cast-in steel inserts should be used.

WELDING

Not recommended. Weld assemblies between Ni-Hard and other parts can be made by welding onto cast-in steel inserts.

STRUCTURE White cast iron, consisting of carbides in a predominantly martensitic matrix.
COMPOSITION
(weight %)		 C Si Mn P S Cr Ni
Sabel Ni-Hard -1 3.0 - 3.6 0.3 - 0.6 0.3 - 0.7 max 0.3 max 0.15 1.5 - 2.6 3.0 - 4.8
Sabel Ni-Hard -2 max 2.9 0.3 - 0.6 0.3 - 0.7 max 0.3 max 0.15 1.5 - 2.6 3.0 - 4.8

 

Data given below should be regarded as typical values, to be used only as guidance.
TYP Hardness Tensile
strength		 Transverse
strength		 Deflection Modulus of
elasticity		 Impact
energy
(Brinell) (MPa) (MPa) (mm) (GPa) Izod-test (J)
Sabel Ni-Hard -1
Sand cast 550 - 690 280 - 350 500 - 620 2.0 - 2.8 169 - 183 28 - 41
Chill cast 600 - 730 350 - 420 560 - 850 2.0 - 2.8 169 - 183 35 - 55
Sabel Ni-Hard -2
Sand cast 530 - 630 320 - 390 560 - 680 2.0 - 2.8 169 - 183 35 - 48
Chill cast 580 - 680 420 - 530 680 - 870 2.0 - 2.8 169 - 183 48 - 76
Specific density (g/cubikcentimeter) 7.6 - 7.8
Pattern shrinkage (%) 1.8 - 2.2
Minimum casting thickness (mm) 10