Material properties after heat treatment for stress analysis

[mark33k]

I am looking for mateterial properties , (i.e. tensile strength, compressive strength .....) for tool steels (i.e h-13, h-11, 420 stainless) after heat treatment to above 50 Rockwell C. Since there are dramatic changes in the material properties and these properties would be needed for me to properly perform CAE stress analysis on my part designs. I know the desied method would be to heat treat a couple of samples of the material and perfom stress tests on them in a lab but I do not have the resources for this. Does anyone know os a general library of materials and the progressive changes of thier properties through heat treatment. Any helpful info or diresction is greatly appreciated.

Thanks.

 

[metengr]

Your best option is to visit the web site below and obtain an on-line subscription. The link for Materials information will take you to the location for the subscriber service.

http://www.asm-intl.org/

Your second option would be to visit a university library and see if they have one or more of the ASM Handbooks that would provide you with material property data.

A third option would be to contact Crucible that supplies tool steels, and see if they have any material property information regarding their alloys.

http://www.crucibleservice.com/eselector/prodbyapp/tooldie/t&dapptitle.html

 

[Maui]

There is a general rule that relates the tensile strength to the hardness for martensitic steels. A table containing this data is contained in the link below.

http://www.crucibleservice.com/eselector/selectortables/selecttables pdf files/HardConvTbls.pdf

Maui

 

[mark33k]

More specifically I am looking for:

Elastic Modulus
Poisons Ratio
Shear modulus
Compressive Strength
Tensile strength
Yield strength

some of which are derivalble from others. It would be a shame for me to subscribe to a site that does not have all this info.

Thanks for leads.

 

[metengr]

The Modulus of Elasticity and Poisson’s ratio will not be that difficult to obtain for tool steels because this information is available in any materials text book;

Elastic Modulus for steels ~ 30 X 106 psi
Poisson's ratio ~0.3

The other material property data you will either have to pay for or go visit a university library.

 

[Maui]

The elastic modulus will not change significantly due to heat treatment, nor will the shear modulus. Unless your calulations require an unusual amount of precision, you should be able to use values for these properties in the annealed condition. Values for the elastic moduli are usually listed in the material data sheets. The yield strength and tensile strength WILL change significantly when these materials (H13, H11, and 420 stainless) are heat treated. The link that I provided above will provide you with a reasonably accurate correlation between the hardness and the resulting tensile strength. The yield strength is another matter. There is no simple correlation between yield strength and hardness. In order to obtain this data you will need to perform tensile tests on these materials in the heat treated condition. And since you will need to perform the tensile tests anyway, you might consider measuring the other properties that you need in order to obtain the most accurate values.

Maui

 

[btrueblood]

I can only add:

http://www.matweb.com

is a good place to start.

As suggested by metengr and maui, there are also resources available on supplier websites. You can google for more of them, and download their .pdf datasheets...

 

[metengr]

The Carpenter web site below is another possible option to obtain desired mechanical properties for several of their tool steel grades, including AISI Type 420 SS. You can register for free to access their technical literature.

http://www.cartech.com/