EPS Properties
|
|
Property
|
Type XI
|
Type I
|
Type VIII
|
Type II
|
Type IX
|
Type III
|
|
Nominal Density, lb/ft 3 (kg/m 3 )
|
0.75 (12)
|
1.00 (16)
|
1.25 (20)
|
1.50 (24)
|
2.00 (32)
|
3.00
(48)
|
|
Density1, min., lb/ft 3 (kg/m 3 )
|
0.70 (12)
|
0.90 (15)
|
1.15 (18)
|
1.35 (22)
|
1.80 (29)
|
2.70
(43)
|
Design Thermal Resistance
per 1.0 in. thickness
ºF•ft2•h/Btu (ºK•m2/W)
|
75º
40º
|
3.22 (0.57)
3.43 (0.60)
|
3.85 (0.68)
4.17 (0.73)
|
3.92 (0.69)
4.25 (0.75)
|
4.17 (0.73)
4.55 (0.80)
|
4.35 (0.77)
4.76 (0.84)
|
4.70
(.83)
|
Thermal Resistance1,min.,
per 1.0 in. thickness
ºF•ft2•h/Btu (ºK•m2/W)
|
75º
40º
|
3.10 (0.55)
3.30 (0.58)
|
3.60 (0.63)
4.00 (0.70)
|
3.80 (0.67)
4.20 (0.74)
|
4.00 (0.70)
4.40 (0.77)
|
4.20 (0.74)
4.60 (0.81)
|
4.30
(.77)
|
|
Compressive strength1 @10% def., min., psi (kPa)
|
5.0
(35)
|
10.0
(69)
|
13.0
(90)
|
15.0
(104)
|
25.0
(173)
|
50.0
(347)
|
Flexural strength1,
min., psi (kPa)
|
10.0
(69)
|
25.0
(173)
|
30.0
(208)
|
40.0
(276)
|
50.0
(345)
|
90.0
(625)
|
Water Vapor Permeance1
of 1.0 in. thickness,
max., perm
|
5.0
|
5.0
|
3.5
|
3.5
|
2.0
|
2.0
|
Water Absorption1
by total immersion,
max., volume %
|
4.0
|
4.0
|
3.0
|
3.0
|
2.0
|
1.0
|
Oxygen Index1
min., volume %
|
24.0
|
24.0
|
24.0
|
24.0
|
24.0
|
24.0
|
|
Flame Spread2
|
20
|
20
|
20
|
20
|
20
|
20
|
|
Smoke Developed2
|
150-
300
|
150-
300
|
150-
300
|
150-
300
|
150-
300
|
150-
300
|
1 See ASTM C-578 Standard Specification for complete information
2 See UL Certificate available from Michigan Foam Products
|