Ton/in2	P.S.I.	kg/mm2	N/mm2 or MPa	Tons/in2	P.S.I.	kg/mm2	N/mm2 or MPa
16 20 23 26 29 30 32 33 35 36 39 40 42 45 46 49 50 52 55 58 60 62 65 68 70 71 75 78	37,000 45,000 51,500 58,000 65,000 67,000 72,000 74,000 78,500 81,000 87,500 90,000 94,000 101,000 103,000 110,333 112,000 116,500 123,000 130,000 134,500 139,000 146,000 153,000 157,000 159,000 168,000 175,000	25.8 31.6 36.5 40.8 45.7 47.1 50.6 52.0 55.5 57.0 61.8 63.3 66.0 71.0 72.5 77.3 78.75 82.0 86.5 91.4 94.5 97.7 102.6 107.5 110.4 111.8 118.0 123.0	250 309 355 402 448 463 494 510 541 556 602 618 649 695 710 757 772 803 849 896 927 957.5 1004 1050 1081 1097 1158 1205	80 81 84 85 88 90 91 94 95 97 100 104 105 107 110 113 115 117 120 123 125 126 130 133 135 136 140	180,000 182,000 188,000 190,000 197,000 202,000 204,000 210,000 213,000 217,000 224,000 233,000 235,000 240,000 246,500 253,000 257,600 262,000 269,000 275,500 280,000 282,500 291,000 298,000 302,400 304,500 313,600	126.0 128.0 132.2 133.6 138.5 142.0 143.4 148.4 149.7 152.6 157.5 163.8 165.4 168.5 173.2 178.0 181.1 184.3 189.0 194.0 197.0 198.0 205.0 209.0 213.0 214.0 221.0	1236 1251 1297 1313 1359 1390 1405 1452 1467 1498 1544 1606 1622 1653 1699 1745 1776 1807 1853 1900 1931 1946 2000 2054 2085 2010 2162