Physical Properties

Test Method

Moisture Content

2.0%

JIS A 6301

Modulus of Rupture

17 kgf/cm²

JIS A 6301

Non-combustibility

As approved by the Japanese Minister of

Construction under the approval

No.2026 / B.S.476 Part 4

Fire Propagation Test

Class 0

B.S.476 Part 6

Flame Spread

Class 1 (0-25)

ASTM-E84

Class A

U.S. Federal Spes.

SS-S-118B

20

Underwriters

Laboratories Inc.

Class 1

B.S.476 Part 7

Thermal Conductivity

0.0045 kcal/mh℃

JIS A 1412

Light Reflectance

LR 1 (over 75%)

ASTM C 523

Sound Absorption Coefficient(N.R.C)

0.55-0.60

ASTM C 423

Ceiling Attenuation Class(CAC)

36

ASTM E 413