模鍛件結構設計:加強肋間距的極限值 
肋高h 鋼及合金鋼、鈦合金 鋁合金 鎂合金 amin amax amin amax amin amax ＜5 10 30S 10 35S 10 30S 6～10 12 30S 10 35S 12 30S 11～16 20 30S 15 35S 20 30S 17～25 30 25S 20 30S 30 25S 26～35 45 25S 35 30S 50 25S 36～50 60 20S 50 25S 70 20S 51～70 80 20S 65 25S 100 20S 71～100 — — 80 25S — —
