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Regal Cutting Tools Catalog.pdf - JW Donchin CO.

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Hardness Conversion Table<br />

Vickers<br />

Hardness<br />

No.<br />

Brinell hardness no.<br />

3000 kg load<br />

10 mm BALL<br />

Standard<br />

BALL<br />

TUNGsten<br />

carbide<br />

ball<br />

a scale<br />

60 kg load<br />

brale<br />

Indenter<br />

ROCKWELL HARDNESS NO.<br />

B scale<br />

150 kg load<br />

brale<br />

indenter<br />

c scale<br />

150 kg load<br />

brale<br />

indenter<br />

d scale<br />

100 kg load<br />

brale<br />

indenter<br />

ROCKWELL SUPERFICIAL<br />

HARDNESS NO.<br />

SUPERFICIAL BRALE<br />

INDENTER<br />

15M<br />

Scale<br />

15 kg<br />

Load<br />

30M<br />

Scale<br />

30 kg<br />

Load<br />

45M<br />

Scale<br />

45 kg<br />

Load<br />

TENSILE<br />

STRENGTH<br />

(Approx.)<br />

Mps<br />

TENSILE<br />

STRENGTH<br />

(Approx.)<br />

ksi<br />

ENGINEERING<br />

292 www.regalcuttingtools.com

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