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I have a 5/8" dia. pin (1018 CRS) t

I have a 5/8" dia. pin (1018 CRS) t

I have a 5/8" dia. pin (1018 CRS) t

(OP)
I have a 5/8" dia. pin (1018 CRS) that is case hardened (Rc 58) 0.020" deep.  It is easy to find the properties of 1018 but how does the case hardening effect the strength/ properties of the pin.

Thanks

RE: I have a 5/8" dia. pin (1018 CRS) t

There are several methods for case hardening and each will have varying effects on the properties. In general, case hardening: increases hardness, increases strength and adds compressive stresses. Most times it is used to increase wear resistance and/or bending stength and/or torque strength and/or fatigue strength - such as in axles.

To determine the properties for your specific application, the pin will probably have to be tested.      

RE: I have a 5/8" dia. pin (1018 CRS) t

Here is some data from Bethlehem Steel a once Great Company.

AISI 1015, Fine Grain
        T.S    Y.S.     Elon    Red Hbn     Izod
        #/sq in    #/sq/in    % (2)     %  No     FT. Lb.

As Rolled    61,000    45,000    39    61  126       81.5
        
As tested    73,000    46,000    32    71  149        91
.048 case with a 62RHc

!/2" Rd            106,250    60,000    13    33  217        50

1"   Rd             75.500    44,000    30    69  156        85


The first two are test bars.  The “as tested” is the standard .505" Rd test bar.  The as rolled is a !’ dia Rd.   This is all single heat data, but the mill run data shouldn’t vary very much.

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