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Thread: What Type Of Steel Is This?
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17th Mar 2018, 09:07 PM #1
What Type Of Steel Is This?
What type of steel is this?
I found 3 of these 100 mm dia, I am guessing they where form earth moving equipment.
My bandsaw hardly mark it, even with a new blade on it.
I tried cutting down about 4 - 5 mm with an angle grinder but made no difference.
DSC_2376 (Medium).JPGInked RED DSC_2357_LI (Medium).jpg
Ratty 05/2004 -05/07/2010 COOPER 01/08/1998-31/01/2012
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17th Mar 2018, 09:24 PM #2China
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Impossible to tell from a photo a guess would be something that has been case hardened
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17th Mar 2018, 11:25 PM #3Most Valued Member
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Mark, it's very hard steel.
It actually looks like a pin from an excavator bucket or similar.
As to the type, it would be anyones guess, probably be a job for a metalurgist to work that one out.
KrynTo grow old is mandatory, growing up is optional.
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18th Mar 2018, 07:57 AM #4Most Valued Member
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You could try tempering them a bit in a wood stove or similar if you have access.
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18th Mar 2018, 08:24 AM #5Diamond Member
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That pin is case hardened. You will struggle to do much with it unless you have a beefy lathe and CBN tools to turn the case off. with out a spectrogragh its impossible to tell what grade it is, but by guess would be 1045,4140 or something similar.
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18th Mar 2018, 09:20 AM #6Pink 10EE owner
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18th Mar 2018, 09:59 AM #7Golden Member
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I have case hardened 4140 and 4130 without a problem.
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18th Mar 2018, 12:45 PM #8
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18th Mar 2018, 12:47 PM #9
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18th Mar 2018, 12:52 PM #10
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18th Mar 2018, 02:59 PM #11Diamond Member
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18th Mar 2018, 03:32 PM #12Pink 10EE owner
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I did an experiment some years back. A piece of 4140 and mild steel, in a charcoal based case hardening mix together. Then quench hardened.
The mild steel measured at Rockwell 60 afterwards, the 4140 only 50. No more then just a normal quench would have achieved without case hardening.Gold, the colour of choice for the discerning person.
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18th Mar 2018, 06:55 PM #13Senior Member
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A mob in my town makes replacement pins for excavators and farm equipment. They machine them from 1050 steel, then send them off for nitriding to achieve the hard case. The pins are returned and then turned to size using CBN inserts.
Hard af.
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