Carbon & Carbon Alloy Steels

#1
[TABLE="class: grid, width: 500, align: left"]
[TR]
[TD]Steel type[/TD]
[TD]Number[/TD]
[TD]Example[/TD]
[/TR]
[TR]
[TD]Plain Carbon Steels[/TD]
[TD]10XX[/TD]
[TD]1075, 1084, 1095, Etc.[/TD]
[/TR]
[TR]
[TD]Manganese Steels[/TD]
[TD]13XX[/TD]
[TD]1350[/TD]
[/TR]
[TR]
[TD]Nickel Steels[/TD]
[TD]2XXX[/TD]
[TD]2340[/TD]
[/TR]
[TR]
[TD]Nickel Chromium Steels[/TD]
[TD]3XXX[/TD]
[TD]3150[/TD]
[/TR]
[TR]
[TD]Molybdenum Steels[/TD]
[TD]4XXX[/TD]
[TD]4140[/TD]
[/TR]
[TR]
[TD]Chromium Steels[/TD]
[TD]5XXX[/TD]
[TD]50100-B[/TD]
[/TR]
[TR]
[TD]Low Chromium Steels[/TD]
[TD]51XX[/TD]
[TD]5160[/TD]
[/TR]
[TR]
[TD]Med. Chromium Steels[/TD]
[TD]52XX[/TD]
[TD]52100[/TD]
[/TR]
[TR]
[TD]Chromium Vanadium Steels[/TD]
[TD]6XXX[/TD]
[TD]6150[/TD]
[/TR]
[TR]
[TD]Silicon Manganese Steels[/TD]
[TD]9XXX[/TD]
[TD]9160[/TD]
[/TR]
[/TABLE]

I just wanted to post this to give some meaning to the numerical system for different alloys. The first numbers designate the main type of alloy, such as Nickel and the last numbers are usually the amount of carbon. For Example, good ol' 5160 is a Low Chromium steel with 60 points or 0.60% Carbon.
I thought some of you may find this helpful in explaining the designations for some of the steels we work with.
 
Last edited:

cnccutter

Well-Known Member
#2
Interesting chart Darrin. wish you'd have posted it as a pic so i could print it for the shop wall.

one question, I know O1 is a carbon steel, how does it fall into the 10XX category? does it have an industrial designation like 10xx that I'm not aware of?

Erik
 

KenH

Well-Known Member
#3
Erik, just select the columns and paste to an Excel (OR LibreOffice) spreadsheet, then you can print to your heart's content. I prefer this method over the image because I can do more things with it.

Darrin - good job! Thanks.

Ken H>
 
#5
Interesting chart Darrin. wish you'd have posted it as a pic so i could print it for the shop wall.

one question, I know O1 is a carbon steel, how does it fall into the 10XX category? does it have an industrial designation like 10xx that I'm not aware of?

Erik
Erik, O1 is not a 10XX series steel, it is Carbon steel but its alloying classifies it as a Tool Steel.
 
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