Surface Finish Types Top & Bottom Sheet Material Types Insulation Types
           Plain           Pre-Painted Aluminum Polyurethane   (PUR)

Insulation Specification

Thermal Conductivity Value

Amount of heat (W) passing through a material having surface of 1 M2 and thickness 1 M in order to rise temperature by 1oC . Units are W/m K

K value (Insulation Value)

Thermal conductivity divided by thickness of the material [ W / m2 K]

U value (Total Insulation Value)

Also known as Overall Heat Transfer Coefficient. It is determined by the insulation value of the various materials forming the panel . [ W / m2 K ] , KCal/m2 h oC , BTU/ F t2 h oF

 

 

On Continuous System

 

Density

 

K value

 

Polyurethane (PUR)

 

35-40 Kg/m3

 

0.022 w/m2K

 

Polyisocyanurate (PIR)

 

40-45 kg/m3

 

0.022 w/m2K

 

Mineral Wool / Rockwool

 

80-150 kg/m3

 

0.04 w/m2K

 

Expanded Polystyrene (EPS)

 

16-24 kg/m3

 

0.035 w/m2K

Please Note  Lower the K value , better is insulation capability

Polyurethane Properties

A. Mechanical Characteristic of Foam

 

Density

 

35-40Kg/m3 (as per BSEN 1602: 1997)

 

Tensile Stress

 

150 kpa (as per BSEN 1608: 1997)

 

Compression Resistance

 

100 kpa (as per ASTM C165 : 2000)

 

Shear Resistance

 

150 kpa ( as per ASTM 271/ 271M)

 

Fire Property

 

B2/ B3 as per DIN 4102-1

B. Insulation Capacity

 

K Value – Thermal Conductivity

 

0.022 W/ mK

 

Tolerance

 

+ /- 0.002

C. Water Absorption of the foam after 24 hours: 1.0 % of Volume

D. Closed Cell content > 94%

E. Overall Heat Transfer Coefficient ( U ) varies with the thickness of the panel

Polyurethane Panel U Value Chart

 

Core Thickness in mm

 

40

 

50

 

75

 

100

 

Overall Heat Transfer

Coefficient “ U “ Value

 

40

 

50

 

75

 

100

 

W / M2 oC

 

0.525

 

0.420

 

0.290

 

0.210

 

KCAL / M2 h oC

 

0.451

 

0.361

 

0.247

 

0.181

 

BTU / F t2 h oF

 

0.092

 

0.074

 

0.050

 

0.037

Based on the Application we are Manufacturing 3 different Profiles of Roof Corrugated Sandwich Panels DCP 35/200,DCP 45/250 and DCP 45/150 ,details of which can be found on https://danasteeluae.com/roof-corrugated/ and For Wall/Flat Panel Applications we are manufacturing DFP,details of which can be found on https://danasteeluae.com/wall-flat-microribbed/