Sign Up

Sign Up to our questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
👉Note: After Sign Up. A confirmation mail will be sent to your registered email account, If you have not received the confirmation mail, kindly Check Your Spam Mails.

Sign In

Login to our Questions & Answers Engine to ask questions answer people’s questions & connect with other people.

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email. If not received mail yet, please check your spam mails.

Username* Please type your username.

E-Mail* Please type your E-Mail.

Question Title*

Please choose an appropriate title for the question so it can be answered easily.

Category* Please choose the appropriate section so the question can be searched easily.

Tags Please choose suitable Keywords Ex: question, poll.

Is this question is a poll? If you want to be doing a poll click here.

Image poll?

Featured image

Browse

Details*

Type the description thoroughly and in details.

Add a Video to describe the problem better.

Video type Choose from here the video type.

Video ID Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

Ask Anonymously

Get notified by email when someone answers this question.

By asking your question, you agree to the Terms of Service and Privacy Policy .*

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Search

Ask A Question

Posted: 4 months ago Posted in Mechanical Engineering, Production Technology, Workshop Technology Views: 2

DIFFERENT ROCKWELL HARDNESS SCALES

Mazurek Gravity

Scale	Indentor	Load Kgf	Dial	Application
A	Diamond	60	Black	carbides, Thin Steel, shallow case hardened Steel, case carburized surfaces.
B	1/16″ Ball	100	Red	Aluinium Alloys, Copper Alloys, uranardened steel etc.In rolled drawn, extruded or cast metal.
C	Diamond	150	Black	Hard cast Irons, Pearlitic Malleable Irons, steel, deep Case Hardened steel, Titanium.
D	Diamond	100	Black	Pearlitic Malleable Iron, Thin steel & Medium case hardened Steel.
E	1/8″ Ball	100	Red	cast Iron, aluminium & magnessium alloys, bearing metal.
F	1/16″ Ball	60	Red	Thin soft sheet metals, annealed Copper alloys
G	1/16″ Ball	150	Red	Copper – nickel – zinc & Cupro – nickel alloys malleable irons.
H	1/8″ Ball	60	Red	Lead, Zinc, aluminium, magnesium alloys.
K	1/8″ Ball	150	Red	Bearing metais, very soft or thin materials.
L	1/4″ Ball	60	Red	Plastic materials: bakelite
M	1/4″ Ball	100	Red	Nyion, Polystyrene, Flexiglass
P	1/4″ Ball	150	Red
R	1/2″ Ball	60	Red	Rigid sheet & plate materials used for electrical insulation are tested M7 L scales.
S	1/2″ Ball	100	Red	When the “spring constant or correlation factor is included in the test procedure, only R scale is used.
V	1/2″ Ball	150