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I tried this with a plate of steel and noticed that there was hardly any resistance. Was wondering why this?
I am not referring to the vertical attraction but the horizontal resistance.That's odd. When I try to slide a magnet across a plate of steel, it sticks. Were you using a "non-magnetic" (Austenitic) alloy of stainless?
John
RESIST. COND. SOURCE
ohm-m SIEMENS/m % IACS CODE MATERIAL
1.611E-07 6.206E+06 10.70 1 Steel, Cast
5.945E-07 1.682E+06 2.90 1 Steel, High Alloy
6.897E-07 1.450E+06 2.50 1 Steel, 304 Stainless
6.897E-07 1.450E+06 2.50 2 Steel, 304 Stainless
7.184E-07 1.392E+06 2.40 1 Steel, 347 Stainless
7.184E-07 1.392E+06 2.40 2 Zircaloy - 2
7.496E-07 1.334E+06 2.30 1 Steel, 316 Stainless
do you have any numbers for this because I keep finding charts online that say steel has a lower resistance than aluminum which makes no sense.
You must be reading a conductance chart, not a resistance chart. Conductance is higher in better conductors.
I am getting major conflicting information. I am finding charts saying that the resistance of Aluminum vs Steel is not that different, but also charts which show that the conductivity of aluminum is way better?? I thought resistivity and conductivity were inversely proportional...?
Can you screen print or snip one of those charts that says the electrical resistance is the same? As crutschow noted, there is an order of magnitude (i.e., 10 fold) difference. Aluminum is the better electrical conductor.
John
for steel it's 1.611 to 7.496 × 10-7 Ωm
for aluminum its 2.82 × 10-8 Ω·m
yeah but why would there be a 10 fold increase in resistance for Aluminum?10-7 is 10-fold greater than 10-8. There is no inconsistency. Magvitron's post agrees with everyone else's.
John
Here's the chart:Nevermind I found a really awesome chart here https://www.azom.com/article.aspx?ArticleID=1298
Harder to find straightforward info like than I would have thought.