Product Details

Powdered Black carborundum P2500

Description:

Black Silicon carbide P-Grit Abrasive material is produced by a special milling process after melting quartz(the main chemical is SiO2) and petroleum coke(the main chemical is carbon). The Black silicon carbide P-Git has a sharper granule than F-Grit. That shape make grains more easily to glue sand onto coated abrasive base such as cloth and paper and stick tight on those bases.

Properties:

High hardness, retaining hardness and high wear resistance.

Excellent thermal shock resistance with high thermal conductivity and low linear thermal expansion.

Good particle distribution.

Good ability to withstand the strongest alkalis and acids.

Applications:

Lapping, polishing

Sanding paper, sanding wheel

Fiber disc, nylon polishing wheel

Non-woven polishing wheel

Sanding block, sanding sheet, sanding sponge,etc.

Knife Grinder, whetstone, oilstone, grinding stone, honing, sharpening sticks, etc.

Wear resistance layer on bakes, etc.

TYPICAL CHEMICAL ANALYSIS
SiC	≥98%
SiO₂	≤1%
H₂O₃	≤0.5%
Fe₂O₃	≤0.3%
F.C	≤0.3%
Magnetic content	≤0.02%

TYPICAL PHYSICAL PROPERTIES
Hardness:	Mohs:9.2
Melting Point:	dissociated at about 2300 °C
Maximum service temperature:	1900℃
Specific Gravity:	3.2-3.45 g/cm³
Bulk density(LPD):	1.2-1.6 g/cm3(depends on the size)
Color:	Black
Particle shape:	Hexagonal
Modulus of Elasticity	58-65x10⁶psi
Coefficient of Thermal Expansion	3.9-4.5 x10^-6/ ℃
Thermal Conductivity	71-130 W/MK

Available sizes:

P-macrogrits sizes coated
Grit designation	Mean diameter in um
P12	1815
P16	1324
P20	1000
P24	764
P30	642
P36	538
P40	425
P50	336
P60	269
P80	201
P100	162
P120	125
P150	100
P180	82
P220	68

P-microgrits sizes coated
Grit designation	Mean grain size ds50-value in um
P240	58.2±2
P280	52.2±2
P320	46.2±1.5
P360	40.5±1.5
P400	35.0±1.5
P500	30.2±1
P600	25.8±1
P800	21.8±1
P1000	18.3±1
P1200	15.3±1
P1500	12.6±1
P2000	10.3±0.8
P2500	8.4±0.5
P3000	6.2±0.5
P4000	5.3±0.3
P5000	3.4±0.3