types of steel-strenght

[loose nut]

Does a free cutting steel like 12L15 have different strength properties then a similar type of steel that isn't free cutting.

IE: does adding things like lead make it significantly weaker or change it's properties in a detrimental way.

[Black_Moons]

Yes. All alloys are diffrent from eachother in basicly every aspect, to some degree or another.

Lead/sulfur/etc free machining alloys are also typicaly hard/imposable to weld with high strength, as the addatives contaminate the weld.

[becksmachine]

Significantly? Not really.

At least not according to the Ryerson specifications for 1141 vs 11L41, both of which have a listed tensile strength of 105 KSI in the cold drawn condition.

As for welding, that would be a different story. Many/most additives a detrimental to welding qualities,

[roundrocktom]

Looking at a 1957-1958 edition of Ryerson Steel Aluminum & Steel in Stock. :D
My kids don't have a clue why the phone number is "STadium 2-6900"

What the heck was "8620"?

I hadn't paid close enough attention, but was suprised to see the same strength and yield on normal and leaded alloys. Even heat treating give the same number. Opps, never heat treated leaded material, as I didn't consider it!

Now saying that, I've seen some nasty results from 12L14 used for a rifle barrel. So was the charge too much, even if 1214 had been used?

[Void]

Now saying that, I've seen some nasty results from 12L14 used for a rifle barrel. So was the charge too much, even if 1214 had been used?

The charge may have been just right. That was the wrong steel to use... in so many ways... just wrong. 4130 prehard would have been a much better choice.

-DU-

[johnnyd]

Here is a link to a good site for all kinds of metal specs

http://www.matweb.com/index.aspx :)