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Properties for STYROFOAM* Brand Products for Fabrication Applications
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PROPERTIES STANDARD UNIT STYROFOAM RTM STYROFOAM HD300
Density (minimum) BS4370: Method 2 kg/m2 40 45
Thermal conductivity (90 days, 10°C) BS4370: Method 7 W/mK 0.025 0.025
Compressive strength at 10% deflection BS4370: Method 3 kN/m2 400 700
Compressive modulus BS4370: Method 3 kN/m2 16-25,000 25-33,000
Tensile Strength DIN 53292 kN/m2 700 1000
Tensile Modulus DIN 53292 kN/m2 16-25,000 25-33,000
Shear Strength ASTM C- 273 kN/m2 400 500
Shear Modulus ASTM C- 273 kN/m2 10,000 14,000
Design compressive stress which gives 2% compression after 20 years PREN 1606 kN/m2 — 250
Water vapor resistivity BS4370: Method 8 µ - value 100-160 100-160
Water absorption by immersion (28 days, full boards) DIN 53434 % - vol. 0.5 0.5
Capillarity — — — nil
Coefficient of linear thermal expansion BS4370: Method 13 mm/mK 0.07 0.07
Temperature limits — °C -50/+75 -50/+75
Fire classification BS3837: Part 1 1986 — A A
Size: Length — mm 2500 2500
Width — mm 600, 1200 600
Thickness(1) — mm 25,50, 75, 100, 120 50,100
Tolerances thickness — mm +/-0.5 +/-0.5
Width (600mm board) — mm +3/-0 +3/-0
Width (1200mm board) — mm — —
Length (600mm board) — mm +10/-0 (2500) +10/-0
Length (1200mm board) — mm +15/-0 (6000) —
Edge profile — — butt butt
Surface — — planed with or without grooves planed with or without grooves

(1) Special dimensions are available upon request


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PROPERTIES STANDARD UNIT STYROFOAM LB STYROFOAM LT STYROFOAM SP
Density (minimum) BS4370: Method 2 kg/m2 30 28 34
Thermal conductivity (90 days, 10°C) BS4370: Method 7 W/mK 0.027 0.024 (1) 0.027
Compressive strength at 10% deflection BS4370: Method 3 kN/m2 300 250 350
Compressive modulus BS4370: Method 3 kN/m2 12-20,000 12-15,000 10-22,000
Tensile Strength DIN 53292 kN/m2 500 450 —
Tensile Modulus DIN 53292 kN/m2 12-20,000 12-15,000 —
Shear Strength ASTM C- 273 kN/m2 250 250 —
Shear Modulus ASTM C- 273 kN/m2 8,000 8,000 —
Design compressive stress which gives 2% compression after 20 years PREN 1606 kN/m2 — — 120
Water vapor resistivity BS4370: Method 8 µ value 100-160 80-160 100-160
Water absorption by immersion (28 days, full boards) DIN 53434 % - vol. 0.5 0.5 0.5
Capillarity — — nil nil nil
Coefficient of linear thermal expansion BS4370: Method 13 mm/mK 0.07 0.07 0.07
Temperature limits — °C -50/+75 -50/+75 -50/+75
Fire classification BS3837: Part 1 1986 — A A A
Size: Length — mm 2500 2500/6000 2500
Width — mm 600, 1200 605 600
Thickness(2) — mm 25, 50, 75, 100, 120 125, 150, 175, 200 50,75,100
Tolerances thickness — mm +/-0.5 +/-0.5 +/-3.0
Width (600mm board) — mm +3/-0 +3/-0 +3/-0
Width (1200mm board) — mm — +5/-0 +5/-0
Length (600mm board) — mm — +10/-0 +10/-0
Length (1200mm board) — mm — +15/-0 +15/-0
Edge profile — — butt butt butt
Surface — — planed planed skin

(1) STYROFOAM LT is tested at 30 days and 10°C for thermal conductivity
(2) Special dimensions are available upon request

®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow