Mechanical Property of AISI 4130?
Answer:
*Density (×1000 kg/m3)- 7.7-8.03 - 25 Deg C
Poisson's Ratio- 0.27-0.30- 25 Deg C
Elastic Modulus (GPa) -190-210 25 Deg C
Tensile Strength (Mpa) -560.5 - 25Deg C - annealed at 865°C
Yield Strength (Mpa) -360.6 -25 Deg C
Elongation (%) -28.2
Reduction in Area (%) - 55.6
Hardness (HB) -156 25 Deg C- annealed at 865°C
*Impact Strength (J):
(Izod) 61.7 25 annealed at 865°C
*http://www.efunda.com/materials/alloys/a...
*http://www.eaa1000.av.org/technicl/4130.
Here's what I do when I want to look for that kind of information: usually I'll go to http://www.matweb.com/ although www.efunda.com is a good source too.
From there, I'd search for 4130. You'll find a number of different listings, and particularly in the case of impact hardness the post-treatment will have significance to your results.
The closest I could find to AISI 4130 at 230 HB was this one:
http://www.matweb.com/search/specificmat... at 197 HB
Izod Impact = 87 J or 64.2 ft-lb
If you look at the other answer you will see that the listed hardness is more likely in the anealed state, so the hardness is lower.
It's been a long time since I took my materials class, so if you need exactly 230 HB there might be a formula in your books to interpolate from two data points, and that might be what you're supposed to do.
Hardness of 4130 & 4140
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