Thermazone™ BMS 13-55 Firezone
Boeing Material Specification
Product Details
BMS 13-55 is the Boeing specification for Firezone wire. These wires are designed for critical circuit applications where wires must operate in extremely harsh environments, under vibration, and with direct flame exposure.
KEY FEATURES
- Designed to operate continuously at 260°C
- Designed to operate for a minimum of 15 minutes at up to 2000 °F (1093 °C), including in a direct flame
- Firezone qualification must pass BSS 7324 & M25038 Shake & Bake Test
APPLICATIONS
- Aircraft engine
- Critical circuit applications
- Harsh environment
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Specifications
Conductor
Nickel-plated copper
Insulation
Impregnated inorganic fiber and TFE coated glass braid
Jacket
Seamless-wrap PTFE tape
Identification
Surface printed per BMS 13-55
Colors
Color coated per BMS 13-55
Voltage Rating
600V
Temperature Rating
-65 to 260 °C
- Wire must withstand a flame temperature of 2,000 ° ± 50 °F for 15 minutes
- After the flame has been stabilized, the wire is vibrated 30 times per second, with the rack having a maximum total excursion (overall movement) of approximately .06 inches (1.52 mm)
- After 15 minutes, the lowest insulation resistance is measured
- No insulation can flake or fall off during the flame exposure
Requirements v. Results
| Requirements | Results | |
|---|---|---|
| BMS 13-55 | 10k Ω | 500k Ω |
| Boeing P/N | P/N | AWG | Stranding | Nominal Conductor Diameter | Nominal Insulation Diameter | Weight lbs/1000ft (kg/1000M) | Maximum Resistance |
|---|---|---|---|---|---|---|---|
| BMS13-55T01 C01 G12 | 12-BF1-1925 | 12 | 19/25 | 0.088(2.24) | 0.157(3.99) | 29.11(19.5) | 2.78(9.12) |
| BMS13-55T01 C01 G14 | 14-BF1-1927 | 14 | 19/27 | 0.07(1.78) | 0.123(3.12) | 18.25 (12.3) | 4.32 (14.2) |
| BMS13-55T01 C01 G16 | 16-BF1-1929 | 16 | 19/29 | 0.055(1.39) | 0.108(2.74) | 12.71(8.5) | 6.86 (22.5) |
| BMS13-55T01 C01 G18 | 18-BF1-1930 | 18 | 19/30 | 0.049(1.24) | 0.101(2.57) | 10.53(7.1) | 9.14(30.0) |
| BMS13-55T01 C01 G20 | 20-BF1-1932 | 20 | 19/32 | 0.039(.991) | 0.093(2.36) | 8.01(5.4) | 14.57(47.9) |
| BMS13-55T01 C01 G22 | 22-BF1-1934 | 22 | 19/34 | 0.031(.787) | 0.086(2.18) | 6.35(4.3) | 23.7(77.7) |
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