Hardness Conversion Calculator

   

Enter value, select the conversion and click on calculate. Result will be displayed. Hardness Conversion Calculator are for Austenitic Stainless Steel and formulas as per ASTM E140-12. HRB = Rockwell Hardness, HB = Brinell hardness

Enter Your Value:
Hardness Number:
HB to HRB HRB to HB
Result:
Converted Value:
Enter Your Value:
Hardness Number:
HR15T to HB HB to HR15T
Result:
Converted Value:
Enter Your Value:
Hardness Number:
HR30T to HB HB to HR30T
Result:
Converted Value:


Hardness Conversion Calculator ASTM E140 Brinell Vickers Rockwell Knoop Scleroscope

Rockwell Superficial Hardness Scales

ScaleIndenter TypeMinor Load
F0
kgf
Major Load
F1
kgf
Total Load
F
kgf
Value of
E
HR 15 NN Diamond cone31215100
HR 30 NN Diamond cone32730100
HR 45 NN Diamond cone34245100
HR 15 T1/16″ steel ball31215100
HR 30 T1/16″ steel ball32730100
HR 45 T1/16″ steel ball34245100
HR 15 W1/8″ steel ball31215100
HR 30 W1/8″ steel ball32730100
HR 45 W1/8″ steel ball34245100
HR 15 X1/4″ steel ball31215100
HR 30 X1/4″ steel ball32730100
HR 45 X1/4″ steel ball34245100
HR 15 Y1/2″ steel ball31215100
HR 30 Y1/2″ steel ball32730100
HR 45 Y1/2″ steel ball34245100

Rockwell Brinell Vickers Shore Hardness Conversion Chart

Rockwell HardnessRockwell HardnessRockwell HardnessRockwell HardnessRockwell HardnessRockwell HardnessRockwell SuperficialRockwell SuperficialRockwell SuperficialRockwell SuperficialBrinell HardnessBrinell HardnessVickers HardnessShore 
ABCDEF15-N30-N45-N30-T3000 kg500 kg136 Approx Tensile Strength(Mpa)
60
kg Brale
100
kg 1/16″ Ball
150
kg
100
kg
100
kg 1/8″ Ball
60kg 1/16″ Ball15
kg
30
kg
45
kg
30
kg 1/16″ Ball
10mm Ball Steel10mm Ball SteelDiamond PyramidSciero
-scope
Approx Tensile Strength(Mpa)
86.57078.594.086.077.61076101
86.06977.793.585.076.5104499
85.66876.993.284.475.494097
85.06776.192.983.674.290095
84.56675.492.582.873.286592
83.96574.592.281.972.073983291
83.46473.891.881.171.072280088
82.86373.091.480.169.970577287
82.36272.291.179.368.868874685
81.86171.590.778.467.767072083
81.26070.790.277.566.665469781220
80.75969.989.876.665.563467480213
80.15869.289.375.764.361565378207
79.65768.588.974.863.259563376200
79.05667.788.373.962.057761375194
78.51205566.987.973.060.956059574188
78.01205466.187.472.059.854357772182
77.41195365.486.971.258.652556071176
76.81195264.686.470.257.450054469169
76.31185163.885.969.456.148752868165
75.91175063.185.568.555.047551367161
75.21174962.185.067.653.846449866157
74.71164861.484.566.752.545148464152
74.11164760.883.965.851.444247163150
73.61154660.083.564.850.343245862146
73.11154559.283.064.049.042144660142
72.51144458.582.563.147.840943458138
72.01134357.782.062.246.740042357135
71.51134256.981.561.345.539041256132
70.91124156.280.960.444.338140255129
70.41124055.480.459.543.137139254125
69.91113954.679.958.641.936238252122
69.41103853.879.457.740.835337251119
68.91103753.178.856.839.634436350117
68.41093652.378.355.938.433635449114
67.91093551.577.755.037.232734548110
67.41083450.877.254.236.131933647108
66.81083350.076.653.334.931132746105
66.31073249.276.152.133.730131844101
65.81063148.475.651.332.52943104399
65.31053047.775.050.431.32863024297
64.71042947.074.549.530.12792944194
64.31042846.173.948.628.92712864192
63.81032745.273.347.727.82642794089
63.31032644.672.846.826.72582723987
62.81022543.872.245.925.52532663886
62.41012443.171.645.024.32472603783
62.01002342.171.044.023.182.02402012543681
61.5992241.670.543.222.081.52341952483579
61.0982140.969.942.320.781.02281892433577
60.5972040.169.441.519.680.52221842383475
59.0961880.02161792303373
58.0951679.02101752223271
57.5941578.52051712133169
57.0931378.02001672083068
56.5921277.51951632042966
56.0911077.01901601962864
55.590976.01851571922763
55.089875.51801541882661
54.088775.01761511842659
53.587674.51721481802658
53.086574.01691451762557
52.585473.51651421732556
52.084373.01621401702555
51.083272.01591371662454
50.582171.51561351632452
50.081071.01531331602452
49.58070.015013050

Hardness Conversion Chart

Brinell Hardness (HB)Vickers Hardness (HV)Rockwell (HRB)Rockwell(HRC)Ultimate Tensile Strength (N/mm2)
64057
61556
59154.5
56953.5
54752
52851
50849.5
49148.51539
444474471520
42945545.51471
41544044.51422
401425431363
388410421314
37539640.51265
363383391236
352372381187
34136036.51157
33135035.51118
32133934.51089
311328331049
302319321020
29330931990
28530130971
27729229941
26928427.5912
26227626.5892
25526910025.5873
2482619924853
2412539823824
2352479722794
2292419620.5775
223235755
21722895745
21222394716
20721893696
19720891667
18719789637
17918987608
17017985559
16317283539
15616581530
14915779500
14315077481
13714474471
13113872461
12613369451
12112767431
11612264422
11111761402
107113382
103108373
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