Re: [MW:7195] Hardness A B C Scale

Hi All,


Scale Abbreviation Load Indenter Use
A HRA 60 kgf 120° diamond cone Tungsten carbide
B HRB 100 kgf 1⁄16-inch-diameter (1.6 mm) steel sphere
Aluminium, brass, and soft steels
C HRC 150 kgf 120° diamond cone Harder steels
D HRD 100 kgf 120° diamond cone
E HRE 100 kgf 1⁄8-inch-diameter (3.2 mm) steel sphere
F HRF 60 kgf 1⁄16-inch-diameter (1.6 mm) steel sphere
G HRG 150 kgf 1⁄16-inch-diameter (1.6 mm) steel sphere

There is seven type of scales A, B, C ...... different amount of load
applied while checking hardness. Above table will guide you just go
through.


Muthu Barathi p
Sr Manager QA / QC

AFCONS

On Sun, 26 Sep 2010 08:56:24 +0530 wrote
>what is A B C scale in hardness test



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Regards,

Pushpraj Anand

Tata Power Co Ltd

Contact No: +919234655254



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Dear Sir,





Thanking You,

Honesty is the best Policy

With Warm Regards,

P Muthu Barathi
Mobile No:09967300544

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