correlation between hardness and other material properties
correlation between hardness and other material properties
(OP)
Hi,
Does anybody knows any equation about the correlation of the hardness and other mechanical properties?
I'm interested in any eqs.
If You know something, please give me a link or a title of a book.
THX!
Does anybody knows any equation about the correlation of the hardness and other mechanical properties?
I'm interested in any eqs.
If You know something, please give me a link or a title of a book.
THX!





RE: correlation between hardness and other material properties
http://www.gorni.eng.br/e/Gorni_SFHTHandbook.pdf
RE: correlation between hardness and other material properties
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: correlation between hardness and other material properties
My old, college metallurgy textbook has a table showing all sorts of hardness numbers correlated to tensile strength for steel.
According to my textbook Brinell Hardness is...
HB = L / ((3.14159D/2)(D - sqrt(D2 - d2)))...
Where L is the test load in kilograms, D is the diameter of the ball in millimeters, and d is the diameter of the resulting impression in millimeters.
If you can construct your equation out of that, I congratulate you. Failing that, I suggest reading your metallurgy textbook.
RE: correlation between hardness and other material properties
http://www.onlinemetals.com/hardness.cfm
Machinery's Handbook
ASM Handbook
Any correlation between mech'l props and hardnesses will be approximations. I once regressed an empirical eqn into data from one of the published charts. Here it is, no guarantee: Cubic Poynomial fit: y = 86.2163 + .681282x - .00106x^2 + .001094x^3; where y = tensile strength in ksi, x = HRC.
As a further approximation to an approximation, yield strength for steel runs around 85% of UTS, but you're on thin ice.