Composite Material Properties: AS4 E7K8
CTD -65F A mean to RTW 75F W mean
Fiber-reinforced composite lamina (ply-level) mechanical properties from CMH-17 Rev G, MIL-HDBK-17, and authoritative datasheets. Covers carbon/epoxy, glass/epoxy, aramid/epoxy, PEEK thermoplastic, metal matrix composites (MMC), and ceramic matrix composites (CMC). Properties include elastic constants (E1, E2, G12, nu12), strengths (Xt, Xc, Yt, Yc, S), and physical properties across multiple test conditions (RTD, CTD, ETD, ETW) with mean and B-basis values.
| material system | condition basis | E1 GPa (GPa) | E2 GPa (GPa) | S MPa (MPa) | Vf pct (%) | Xc MPa (MPa) | Xt MPa (MPa) | Yt MPa (MPa) | basis | category | density kg m3 (kg/m3) | fiber | matrix | nu12 (dimensionless) | ply thickness mm (mm) | source page | source table | test condition |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AS4 E7K8 | CTD -65F A mean | 121.348 | — | — | 54 | 1,902.953 | 2,006.374 | — | mean | Carbon Composite | 1,550 | AS4 | E7K8 | 0.288 | 0.1372 | 89; 92 | Table 4.2.3(a); Table 4.2.3(d) | CTD (-65F/A) |
| AS4 E7K8 | ETD 180F A mean | — | — | 100.663 | 56 | — | — | — | mean | Carbon Composite | 1,545 | AS4 | E7K8 | — | 0.1397 | 94 | Table 4.2.3(f) | ETD (180F/A) |
| AS4 E7K8 | ETW 180F W mean | 124.106 | — | 92.39 | 56 | 1,034.214 | 2,137.375 | — | mean | Carbon Composite | 1,545 | AS4 | E7K8 | 0.288 | 0.1397 | 90; 93; 94 | Table 4.2.3(b); Table 4.2.3(e); Table 4.2.3(f) | ETW (180F/W) |
| AS4 E7K8 | RTD 75F A mean | 62.191 | 8.481 | 66.741 | 51.5 | 765.318 | 2,089.111 | 37.714 | mean | Carbon Composite | 1,530 | AS4 | E7K8 | 0.32 | 0.2019 | 179; 180; 89; 91; 92; 94 | Table 4.2.11(a); Table 4.2.11(b); Table 4.2.3(a); Table 4.2.3(c); Table 4.2.3(d); Table 4.2.3(f) | RTD (75F/A) |
| AS4 E7K8 | RTW 75F W mean | 127.553 | — | 104.111 | 56 | 1,482.373 | 2,096.006 | — | mean | Carbon Composite | 1,545 | AS4 | E7K8 | — | 0.1397 | 89; 92; 94 | Table 4.2.3(a); Table 4.2.3(d); Table 4.2.3(f) | RTW (75F/W) |
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