| Specification | AMS 4254 | |||
|---|---|---|---|---|
| Form | Aramid fiber reinforced sheet laminate | |||
| Laminate lay-up | 2/1 | 3/2 | 4/3 | 5/4 |
| Nominal thickness, in. | 0.032 | 0.053 | 0.074 | 0.094 |
| Basis | S | S | S | S |
| Mechanical Properties: | ||||
| Ftu, ksi: L | 90 | 96 | 101 | 101 |
| LT | 48 | 44 | 43 | 42 |
| Fy, ksi: L | 48 | 49 | 49 | 49 |
| LT | 33 | 30 | 30 | 30 |
| Fcy, ksi: | ||||
| L | 35 | 35 | 34 | 33 |
| LT | 33 | 30 | 30 | 30 |
| Fsua, ksi | b | b | b | b |
| Fsya, ksi | 16 | 15 | 14 | 14 |
| Fbru, ksi: | ||||
| L (e/D = 1.5) | 78 | 73 | 73 | 68 |
| LT (e/D = 1.5) | 89 | 84 | 80 | 75 |
| L (e/D = 2.0) | 93 | 86 | 83 | 77 |
| LT (e/D = 2.0) | 95 | 89 | 81 | 76 |
| Fbry, ksi: | ||||
| L (e/D = 1.5) | 53 | 52 | 51 | 50 |
| LT (e/D = 1.5) | 56 | 52 | 52 | 52 |
| L (e/D = 2.0) | 63 | 63 | 61 | 59 |
| LT (e/D = 2.0) | 66 | 61 | 61 | 60 |
| εtd, percent: | ||||
| L | 2 | 2 | 2 | 2 |
| LT | 12 | 12 | 12 | 14 |
| Ec, 103 ksi: L | 9.9 | 9.9 | 9.7 | 9.6 |
| LT | 8.1 | 7.5 | 7.1 | 7.0 |
| E, 103 ksi: | ||||
| L | 9.5 | 9.4 | 9.3 | 9.1 |
| LT | 8.0 | 7.5 | 7.2 | 7.0 |
| Gc, 103 ksi: | ||||
| L | ||||
| LT | 2.7 | 2.5 | 2.4 | 2.2 |
| μ: | ||||
| L | 0.33 | 0.34 | 0.34 | 0.32 |
| LT | 0.29 | 0.27 | 0.26 | 0.25 |
| Physical Properties: | ||||
| ω, lb/in.3 | 0.086 | 0.084 | 0.082 | 0.081 |
| C, K, α | ||||
- a Shear values determined from data obtained using Iosipescu shear specimens.
- b Shear ultimate strengths not determinable due to excessive deflection of specimen.
- c Bearing values are “dry pin” values per Section 1.4.7.1 determined in accordance with ASTM E238.
- d Total (elastic plus plastic) strain at failure determined from stress-strain curve.