RMB 421C
RMB-421-C is a resin specifically formulated for aerospace ECS ducting. The excellent physical properties, low moisture absorption and ease of processing make RMB-421-C the ideal economical alternative for composite or metallic ducting. RMB 421C is an approved material by Douglas Aircraft (DMS 23 10) and McDonnell Douglas, Saint Louis (MMS 5028).
|
Test Performed |
Standard Applied |
Test Results |
|---|---|---|
|
Tensile at Yield |
ASTM D-638 |
5,500 psi |
|
Tensile at Break |
ASTM D-638 |
5,700 psi |
|
Elongation at Break |
ASTM D-638 |
500% |
|
Flexural Modulus |
ASTM D-790 |
1.7X10^5 psi |
|
Izod impact, Unnotched (.21" thick) |
ASTM D-256 |
No Break |
|
Izod impact, Rev. Notched |
ASTM D-256 |
No Break |
|
Izod impact, Notched (0.21" thick) |
ASTM D-256 |
1.3 ft-lbs/inch |
|
Specific Gravity |
ASTM D-792 |
1.0-1.1 |
|
Vicat Softening Temp. |
ASTM D-1525 |
168 |
|
Solvent Resistant |
Table Available |
Excellent |
|
12 Sec. Vertical Burn |
FAR 25.853 (b) |
NA |
|
60 Sec. Vertical Burn |
FAR 25.853 (a) |
NA |
|
Horizontal Burn (.065" thick) |
FAR 25.853 (b-3) |
Pass |
