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Riddhi Chemicals
Mumbai, Maharashtra
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Grinding Media

Offering you a complete choice of products which include Grinding Media such as Agate Pebbles, Glass Beads, Carbon Steel Balls EN-9, Chrome Alloy Steel Balls EN - 31 and Steatite Balls.


Agate Pebbles


Agate Pebbles a stone for new opportunities for business or career. It also aid in restoration of energy, used in healing, and believed to bring wearer happiness, wealth, health, and long life. Increases ability to ward off self-induced anger and inner bitterness. Agate Pebbles can also be used as a substitute for costly yellow sapphire.

Glass Beads

[ Typical Analysis ]
SiO2 -72.50%
NaO -13.70%
CaO -9.80%
MgO -3.30%
A12O3 -0.40%
FeO;Fe2O3 -0.20%
K2O -0.10%
B2O 0.00%


Thermal Properties
Softening point - 737 0C
Thermal Conductivity - 1.10 W/mK
Expansion of Co-efficient (0-3000C) - 7.75 x 10-6 / K
Specific Heat - 770 J / kgK


Physical Properties
Specific Gravity - 2.45-2.55 g / cm3
Refractive Index - 1.51 - 1.52
Hardness Mohs 6
Rockwell - 47 RC
OPH 50 g load - 540 kj / mm2
Knoop 100 g load - 517 kj / mm2
Coefficient of friction  
Static - 0.9 - 1.0
Dynamic - 0.7 - 0.8


Chemical Properties
Oil Absorption - 17 g Oil / 100 g sphere
Chemical resistance (Powder test)  
4 hours in H2O extracted at 900C - 0.05% Na2O
4 hours in N/50 H2SO4 extracted at 900 C - 0.03% Na2O

Carbon Steel Balls EN-9

C 0.50 to 0.60% S 0.06% Max
MN 0.50 to 0.80% SI 0.05% to 0.35%
P 0.06% Max    

Chrome Alloy Steel Balls EN - 31

C 0.9 TO 1.2% S 0.05% Max
MN 0.30 to 0.75% SI 0.10% to 0.35%
P 0.06% Max CR 1.00 to 1.60%

Steatite Balls

Physical Properties
Hardness (mohs Scale) 7.5
Specific Gravity 2.65
Water absorption 0
Flexural Strength 1300 KG/cm2
Compressive strength 8500 KG/cm2
Co-efficient of thermal expansion (20-10000C) 8.5 X 10-6/0K
Colour Off White


  Chemical Analysis
Si.O2 61.50%
Mg O 27.40%
Ba O 3.20%
Al2 O3 6.80%
Fe2O 0.50%
Na2O 0.10%
Ca O` 0.50%

Agate Pebbles

SILICA (as SiO2) 98.12
ALUMINIUM (as Al2O3) 0.84
FERRIC OXIDE (as Fe2O3) 0.02
SPECIFIC GRAVITY 2.92
HARDNESS ON MOH's SCALE BETWEEN 6 & 7  

Riddhi Chemicals

Mr. Nilesh H. Shah (Proprietor)
Room No. 7, 1st Floor, Krishna Kunj, Near Malad Shopping Center, S. V. Road, Malad West
Mumbai - 400064
Maharashtra, India
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