力值 (kN) 强度 (MPa) 力值 (kN) 强度 (MPa) 力值 (N) 强度 (MPa) 力值 (N) 强度 (MPa) 42.5 27.2 ≥17.0 1493.3 ≥3.5 42.5R 35.2 ≥22.0 1706.6 ≥4.0 52.5 36.8 ≥23.0 1706.6 ≥4.0 52.5R 43.2 ≥27.0 2133.3 ≥5.0 62.5 44.8 ≥28.0 2133.3 ≥5.0 62.5R 51.2 ≥32.0 2346.7 ≥5.5 42.5 27.2 ≥17.0 1493.3 ≥3.5 42.5R 35.2 ≥22.0 1706.6 ≥4.0 52.5 36.8 ≥23.0 1706.6 ≥4.0 52.5R 43.2 ≥27.0 2133.3 ≥5.0 32.5 16.0 ≥10.0 1066.7 ≥2.5 32.5R 24.0 ≥15.0 1493