Products - Lost Foam EPS

Lost Foam

A wide selection of EPS products specifically designed for lost foam casting

Lost Foam EPS SPECIFICATIONS

Product
designation
Volatile level
(by wt.)
Beads size
distribution peak
Average bead size Density potential* External additive package
T170C 5.7-6.5% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.25 pcf
(≥ 2 0.0 g/L)
For steam expansion
T170E 5.7-6.5% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.25 pcf
(≥ 2 0.0 g/L)
+ Anti-static / steam exp.
T180C 6.2-7.1% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.10 pcf
(≥ 17.6 g/L)
Mold release only
T180F 6.2-7.1% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.10 pcf
(≥ 17.6 g/L)
For steam expansion
D180F 6.2-7.1% 30 to 45 US mesh
(400-700 µm)
550 µm ≥ 1.00 pcf
(≥ 16.0 g/L)
For steam expansion
Advanced Casting Formulations §
T175A§ 5.7-6.5% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.25 pcf
(≥ 20.0 g/L)
For steam expansion
T185F§ 6.2-7.1% 40 to 50 US mesh
(300-500 µm)
400 µm ≥ 1.10 pcf
(≥ 17.6 g/L)
For steam expansion
* Density potential is a function of utilities and expander capabilities; the above values represent optimum expansion conditions.
§ Contains an additive which quickly reduces the molecular weight of polystyrene at elevated temperatures. Recommended for applications in aluminum having fold defects and applications in iron having excessive lustrous carbon in castings.
  • Each of the above products is available in 1,000 pound boxes or 250 pound drums.

Advanced Casting Lost Foam Formulation

  • StyroChem® developed 10 years ago an advanced casting formulation for Aluminum Lost Foam.
  • StyroChem® products made from this formulation as T175 & T185 are able to reduce or eliminate fold defects caused by entrapped polystyrene.
  • Studies done by GM (General Motors) showed that folds defects and fold area considerably decrease and disappear in certain conditions with patterns using advanced casting formulation compare to standard patterns.
  • European automotive manufacturers also saw their total defects rates drop by more than half by using advanced casting formulation instead of standard lost foam EPS.

Lost Foam Advantages vs Traditional Casting

  • Lost Foam Casting is particularly used for very complex casting. This process eliminates cores and parting lines.
  • Lost Foam also improves accuracy in sizing, Casting walls can be curved or of variable thickness.
  • Lost Foam casting is cost effective because it does not need as much machining as traditional casting.
Lost Foam Standard Casting
Aluminum Lost Foam casting made with
standard Lost Foam EPS
Styrochem advanced casting
Aluminum Lost Foam casting made with
StyroChem®  advanced casting formulation
 
IMPORTANT:
While the information and data contained in this bulletin are presented in good faith and believed to be reliable, it does not constitute a part of our terms and conditions of sale unless specifically incorporated in our Order Acknowledgment. NOTHING HEREIN SHALL BE DEEMED TO CONSTITUTE A WARRANTY, EXPRESSED OR IMPLIED, THAT SAID INFORMATION OF DATA IS CORRECT OR THAT THE PRODUCTS DESCRIBED ARE MERCHANTABLE OR FIT FOR A PARTICULAR PURPOSE, OR THAT SAID INFORMATION, DATA OR PRODUCTS CAN BE USED WITHOUT INFRINGING PATENTS OF THIRD PARTIES.