Revision 09/21/2018      

HEATBRAKE 508-G (Hand Pack)
Language: English

Thermbond Refractories use the patented Stellar Binder Systemâ„¢ for easy and accurate mixing, controlled setting, fast dry-out and heat up, thermal shock resistance and other unique properties. Thermbond chemically bonds to existing fired refractories.

CHARACTERISTICS - Silica - Medium Weight - Fast Curing - Fast Setting



Unit Equivalent Bags:1 Jug:1.5
Bag Weight* 30 lbs 13.6 kg
Jug Weight* 8 lbs 3.6 kg
Drum Weight 400 lbs 181.4 kg
Unit Weight* 42 lbs 19.1 kg
Yield / Unit* 0.40 ft3 0.011 m3
Units / Ton* 47.62 short 52.49 metric
Wet to Dry Ratio* Contact us for details
Liquid Activator HEATBRAKE
Bags Per Pallet 72
Drums Per Dry Pallet -


1500F (816C) 700 psi 49 kg/cm2 4.8 N/mm2

CHEMICAL ANALYSIS (After 1500F (816C))**

  • Al2O3
  • SiO2
  • Fe2O3
  • P2O5
  • Other
  • Total
  • 12.00 %
  • 69.00 %
  • 1.00 %
  • 16.00 %
  • 2.00 %
  • 100.00 %


1500F (816C) 250 psi 18 kg/cm2 1.7 N/mm2


Data based on
  • Hand Packing
Alternative Method***
  • Gunning


As Placed 105 lbs/ft3 1682 kg/m3
After 1500F (816C) 85 lbs/ft3 1362 kg/m3


1500F (816C) -0.40%
2000F (1093C) -0.55%
2500F (1371C) -0.85%


750F (399C) 3.9 Btu-in/hr-ft2-F 0.56 W/m K
1450F (788C) 4.3 Btu-in/hr-ft2-F 0.62 W/m K
1800F (982C) 5.0 Btu-in/hr-ft2-F 0.72 W/m K
**Test data shown are based on averages subject to normal variation on individual tests, and therefore should not be assumed to be maximum or minimum specifications.
***Application by alternative method may produce somewhat different results.
Measures are approximate and may vary. For mixing partial units, contact Stellar Materials for specific wet-to-dry ratios. See Installation Guide for more detailed information.
To assure you are getting the latest data, see our online data sheets at
Due to the unique nature of the Stellar binder system, test procedures vary slightly from ASTM.
Documentation of these variations is available upon request.
Thermbond is a registered trademark of Stellar Materials Incorporated. All rights reserved.