Introduction of AR SAND, the Artificial Sand Made for Casting Molds

  • AR SAND is artificial sand manufactured from high alumina material by an electro-melting and blowing method.
  • Suitable for practically any kind of casting mold such as greensand mold, self-hardening mold, shell mold and others, regardless of size.
  • Recyclable and Eco-friendly because it does not contain free silicic acid.

Principal Benefits of AR SAND

1. Very high sphericity contributes to excellent fluidity and filling efficiency, resulting in higher mold accuracy and strength.
2. Less crush and distortion in mold and improved dimensional accuracy are achieved thanks to low thermal expansion.
3. Superior fire resistance for Mullite-based material.
4. Superior in fracture resistivity and recyclability, enabling reduction of new sand supply and industrial waste.
5. Dust concentration control becomes easy and work environment will be improved, because free silicic acid is not contained.

Specifications of AR SAND

Particle Size Distribution(reference)
mesh 26 36 50 70 100 140 200 280 pan AFS
μm 600 425 300 212 150 106 75 53 -53  
#350 12.7 42.8 36.5 6.3 1.3 0.2 0.2     34.5
#450 7.5 34.2 25.6 15.0 11.5 5.2 0.9 0.1   44.2
#650 0.1 5.8 26.7 24.3 23.5 11.4 6.6 1.4 0.2 65.1
#750   1.9 10.0 34.8 26.2 16.6 7.5 2.4 0.6 74.0
#1500       0.1 3.6 10.8 49.6 29.5 6.4 161.0
Alkali Phenol Process
Strength Comparison AR SAND #650 Imported Silica Sand
Amount of Resin (PHS) 1.2 0.8 1.5
Amount of Hardener Agent (PHR) 20
Sand Discharging Temperature (°C ) 25 25 25
Working Life (min) 6 6 6
Compressive Strength /

Bulk Density (N/mm²)/(g/cm³)
0.5H 1.2/2.0 0.8/2.0 0.7/1.6
1H 2.0/2.0 1.5/2.0 1.3/1.6
24H 3.5/2.0 3.0/2.0 2.6/1.6

※Unit: (N/mm2)/(g/cm3)

Crush Rate
Sand Type Crush Rate (%)
AR SAND #650 106
Imported Silica Sand 206

Crush Rate = 100 x (Particle Size Index After Crush / Particle Size Index of Original Sand)
Ball Mill used at 250rpm for 50min.

Shell Mold (RCS)
Amount of Added Resin: 2.0PHS
Hexamine: 15PHR
Calcium Stearate: 0.1PHS
Strength Comparison AR SAND #650 Imported Silica Sand
Welding Point (°C ) 95 101
Bend (mm) 0.9 2.1
Cold Strength (N/mm2) 15.7 9.1
Warm Strength (N/mm2) 3.9 1.1
Bulk Density (g/cm3) 2.1 1.5
Internal Hardening (mm) 4.4 4.4

Coefficient of Thermal Expansion at 1000°C

INQUIRY / ITOH KIKOH CO., LTD.  Foundry Division, Sales Group
Contact us!
ITOH KIKOH CO., LTD. Foundry Division, Sales Group
ADDRESS: Nu-no-wari 412-4, Minamishibata-machi, Tokai, Aichi 476-0001, Japan
TEL: +81 52 604-1216
8:30am to 5:30pm JST on weekdays; except national and corporate holidays
FAX: +81 52 604-1284

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