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Hardness Values Conversion Calculator






Enter value, select the conversion and click on calculate. Result will be displayed. Above conversions are for Austenitic Stainless Steel and formulas as per ASTM E140. 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:




Rockwell Superficial Hardness Scales
Scale Indenter Type Minor Load
F0
kgf
Major Load
F1
kgf
Total Load
F
kgf
Value of
E
HR 15 N N Diamond cone 3 12 15 100
HR 30 N N Diamond cone 3 27 30 100
HR 45 N N Diamond cone 3 42 45 100
HR 15 T 1/16" steel ball 3 12 15 100
HR 30 T 1/16" steel ball 3 27 30 100
HR 45 T 1/16" steel ball 3 42 45 100
HR 15 W 1/8" steel ball 3 12 15 100
HR 30 W 1/8" steel ball 3 27 30 100
HR 45 W 1/8" steel ball 3 42 45 100
HR 15 X 1/4" steel ball 3 12 15 100
HR 30 X 1/4" steel ball 3 27 30 100
HR 45 X 1/4" steel ball 3 42 45 100
HR 15 Y 1/2" steel ball 3 12 15 100
HR 30 Y 1/2" steel ball 3 27 30 100
HR 45 Y 1/2" steel ball 3 42 45 100



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Stainless Steel Tubing and Pipe:

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Corrosion Resistance of Stainless Steel Tubes
Nickel Alloy Seamless Tubes:

UNS N08020 2.4600 Nickel Alloy 20 Seamless Tubing
UNS N02200 2.4066 200 Nickel Alloy Seamless Tubing
UNS N04400 400 Nickel Alloy 2.4360 Nickel Alloy Tubing
UNS N08800 800 Nickel Alloy Seamless Tubes
UNS N08810 800H UNS N08810 Nickel Alloy Seamless Tubes
UNS N08811 800HT Nickel Alloy Seamless Tubes
UNS N08825 825 2.4858 Nickel Alloy Seamless Tubes
UNS N06600 600 2.4816 Nickel Alloy Seamless Tubes
UNS N06625 625 2.4856 Nickel Alloy Seamless Tubes
UNS N10276 C-276 2.4819 Nickel Alloy Seamless Tubing
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