Hardness Conversion Chart

Brinell HardnessRockwell HardnessTensile StrengthBrinell HardnessRockwell HardnessTensile Strength
Carbide Ball 3000 KGA Scale 60KGB Scale 100KGC Scale 150KG(Approx.)Carbide Ball 3000 KGA Scale 60KGB Scale 100KGC Scale 150KG(Approx.)
-85.6-68-33168.1-35.5166,000
-85.3-67.5-32167.5-34.3160,000
-85-67-31166.9-33.1155,000
76784.7-66.4-30266.3-32.1150,000
75784.4-65.9-29365.7-30.9145,000
74584.1-65.3-28565.3-29.9141,000
73383.8-64.7-27764.6-28.8137,000
72283.4-64-26964.1-27.6133,000
712----26263.6-26.6129,000
71083-63.3-25563-25.4126,000
69882.6-62.5-24862.5-24.2122,000
68482.2-61.8-24161.810022.8118,000
68282.2-61.7-23561.49921.7115,000
67081.8-61-22960.898.220.5111,000
65681.3-60.1-223-97.320-
65381.2-60-217-96.418105,000
64781.1-59.7-212-95.517102,000
63880.8-59.2329,000207-94.616100,000
63080.6-58.8324,000201-93.81598,000
62780.5-58.7323,000197-92.8-95,000
60179.8-57.3309,000192-91.9-93,000
57879.1-56297,000187-90.7-90,000
55578.4-54.7285,000183-90-89,000
53477.8-53.5274,000179-89-87,000
51476.9-52.1263,000174-87.8-85,000
49576.3-51253,000170-86.8-83,000
47775.6-49.6243,000167-86-81,000
46174.9-48.5235,000163-85-79,000
44474.2-47.1225,000156-82.9-76,000
42973.4-45.7217,000149-80.8-73,000
41572.8-44.5210,000143-78.7-71,000
40172-43.1202,000137-76.4-67,000
38871.4-41.8195,000131-74-65,000
37570.6-40.4188,000126-72-63,000
36370-39.1182,000121-69.8-60,000
35269.3-37.9176,000116-67.6-58,000
34168.7-36.6170,000111-65.7-56,000