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Products
Dow manufactures an extensive selection of core foams for panel, composite, pultrusion and specialty applications. We can develop a product to meet your needs. Contact your Dow representative for more information.
TRYMER™ polyisocyanurate foam – produced in both low and high index formulations for a variety of applications. Manufactured in bunstock lengths up to 24', TRYMER products are available in a range of densities and compressive strengths to meet exacting specifications and customer requirements.
STYROFOAM™ Panel Core extruded polystyrene – boards produced in a variety of lengths, widths and thicknesses with very tight tolerances. The planed surface of STYROFOAM Panel Core is designed for dependable bonding of facing materials.
Dow core foams are backed by the reputation of The Dow Chemical Company, a leading producer of innovative rigid foam products. Count on Dow for products of superior quality that deliver long-term performance at an exceptional value.
Use the tables below to find Dow core foams that meet your project parameters. (Data shown are typical values obtained from representative samples. This data may be used as a guide for material selection or design purposes, but should not be construed as specifications.)
TRYMER Low Index Polyisocyanurate Foam
TRYMER High Index Polyisocyanurate Foam
STYROFOAM Panel Core Extruded Polystyrene
TRYMER Low Index Polyisocyanurate Foam
| Property/Units |
ASTM Test Method |
TRYMER™ 200L |
TRYMER™ 250L |
TRYMER™ 350L |
TRYMER™ 400L |
| Density, pcf (kg/m3) |
D1622 |
2.0 (32.0) |
2.5 (40) |
3.5 (56.1) |
4.1 (57.7) |
| Compressive Strength, psi (kPa), parallel to rise |
D1621 |
30 (207) |
45 (310) |
60 (414) |
75 (517) |
| Tensile Strength, psi (kPa), 3D average |
D1623 |
30 (207) |
50 (345) |
60 (414) |
75 (517) |
| Shear Strength, psi (kPa), average of parallel to rise and extruded directions |
C273 |
23 (159) |
30 (207) |
35 (241) |
40 (276) |
| Flexural Strength, psi (kPa), parallel to rise |
C203 |
39 (269) |
65 (448) |
90 (621) |
100 (689) |
| Water Absorption, % by vol, 24-hour immersion |
C272 |
< 0.7 |
< 0.7 |
< 0.7 |
< 0.7 |
| R-Value per inch (25 mm), °F·ft2·h/Btu (m2·°C/W), aged 180 days |
C518 |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
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TRYMER High Index Polyisocyanurate Foam
| Property/Units |
ASTM Test Method |
TRYMER™ 1600 |
TRYMER™ 1800 |
TRYMER™ 2000XP |
TRYMER™ 2500 |
TRYMER™ 3000 |
TRYMER™ 4000 |
TRYMER™ 6000 |
| Density, pcf (kg/m3) |
D1622 |
1.65 (26.4) |
1.80 (28.8) |
2.05 (32.8) |
2.5 (40.0) |
3.0 (48.0) |
4.0 (64.0) |
6.0 (96) |
| Compressive Strength, psi (kPa), parallel to rise |
D1621 |
17 (117) |
25.0 (172.3) |
25.0 (172.3) |
39.0 (268) |
65.0 (450) |
95.0 (655) |
140 (970) |
| Tensile Strength, psi (kPa), 3D average |
D1623 |
18 (124) |
20 (138) |
20 (138) |
30 (207) |
40 (275) |
60 (413) |
95 (654) |
| Shear Strength, psi (kPa), average of parallel to rise and extruded directions |
C273 |
13 (90) |
13 (90) |
15 (104) |
17 (117) |
25 (172) |
42 (290) |
80 (550) |
| Flexural Strength, psi (kPa), parallel to rise |
C203 |
22 (151) |
30 (207) |
33 (227.5) |
42 (289) |
60 (413) |
150 (1,030) |
160 (1,100) |
| Water Absorption, % by vol, 24-hour immersion |
C272 |
< 0.7 |
< 0.7 |
< 0.7 |
< 0.7 |
< 0.7 |
< 0.7 |
< 0.7 |
| R-Value per inch (25 mm), °F·ft2·h/Btu (m2·°C/W), aged 180 days |
C518 |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
5.3 (0.93) |
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STYROFOAM Panel Core Extruded Polystyrene
| Property/Units |
ASTM Test Method |
STYROFOAM™ Panel Core 20 |
STYROFOAM™ Panel Core 30 |
STYROFOAM™ Panel Core 40 |
| Density, pcf (kg/m3) |
D1622 |
1.5 (24) |
1.9 (30) |
2.0 (32) |
| Compressive Strength, psi (kPa), vertical |
D1621 |
20 (140) |
30 (207) |
40 (280) |
| Tensile Strength, psi (kPa), vertical |
D1623 |
50 (340) |
70 (482) |
75 (520) |
| Shear Strength, psi (kPa) |
C273 |
25 (170) |
35 (241) |
40 (280) |
| Shear Modulus, psi (kPa) |
C273 |
330 (2,275) |
500 (3,440) |
550 (3,800) |
| Flexural Strength, psi (kPa), extruded |
C203 |
50 (340) |
55 (379) |
60 (410) |
| Flexural Modulus, psi (kPa), extruded |
C203 |
1,600 (11,000) |
1,900 (13,072) |
2,000 (14,000) |
| Water Absorption, % by vol |
C272 |
0.5 |
0.1 |
0.1 |
| R-Value per inch (25 mm), °F·ft2·h/Btu (m2·°C/W), aged 180 days |
C518 |
5.0 (0.88) |
5.0 (0.88) |
5.0 (0.88) |
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