GLOAT and what's P20 tool steel
 

I just bought the entire tool steel inventory at a mold making shop
auction. 1000 lbs. of 4140, A2, D2, H13, S7, 420 stainless, O1, W1
and P20. Also about 2000 lbs. of 1018 and Cold Rolled and 1000 lbs.
of Aluminum, several grades.

I've looked up all the steels in my "Heat treatment, selection, and
application of TOOL STEELS" book. P20 heat treat conditions are given;
harden at 1525 F oil quench. As hardened Rc is listed as 51. The book
also includes a table of tempering results. But no where in the book
is there any info on what application to use this steel for. Anyone
know?

Karl

GLOAT and what's P20 tool steel
 

On Mon, 14 Jul 2003 20:18:32 -0500, the renowned Karl Townsend
wrote:

I just bought the entire tool steel inventory at a mold making shop
auction. 1000 lbs. of 4140, A2, D2, H13, S7, 420 stainless, O1, W1
and P20. Also about 2000 lbs. of 1018 and Cold Rolled and 1000 lbs.
of Aluminum, several grades.

I've looked up all the steels in my "Heat treatment, selection, and
application of TOOL STEELS" book. P20 heat treat conditions are given;
harden at 1525 F oil quench. As hardened Rc is listed as 51. The book
also includes a table of tempering results. But no where in the book
is there any info on what application to use this steel for. Anyone
know?

It's good for making molds- the actual cavities and cores.

http://www.cintool.com/P20one.htm
http://www.carrs-tool.co.uk/products/P20Spec.htm

I think some (most?) types of P20 are vacuum cast and have low
inclusions and that sort of thing so you can get nice shiny polished
surfaces.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

GLOAT and what's P20 tool steel
 

I've looked up all the steels in my "Heat treatment, selection, and
application of TOOL STEELS" book. P20 heat treat conditions are given;
harden at 1525 F oil quench. As hardened Rc is listed as 51. The book
also includes a table of tempering results. But no where in the book
is there any info on what application to use this steel for. Any

It"s used as is since it is already heat treated to c28-32 unless its high hard
the it will be inthe high 30s.We cut cores and cavities directly in it.It"s a
good mold steel Ray Mueller

GLOAT and what's P20 tool steel
 

A: Air quench
D: Die Steel
M: Molybdenum (very long production runs, better machinability than T
series, although not as robust)
O: Oil quench
P: Plastic mold
S: Shock-resistant
H: Hot work
T: Tungsten (very long production runs, too brittle for shock applications)
W: Water quench

HTH

Regards,

Robin

"Karl Townsend" wrote in message
...
I just bought the entire tool steel inventory at a mold making shop
auction. 1000 lbs. of 4140, A2, D2, H13, S7, 420 stainless, O1, W1
and P20. Also about 2000 lbs. of 1018 and Cold Rolled and 1000 lbs.
of Aluminum, several grades.

GLOAT and what's P20 tool steel
 

I alway thought of P20 as "vacuum degassed" 4140.

You will probably want to throw the S7 away, so I will be glad to take
it off your hands.

Pete Stanaitis
---------------

Karl Townsend wrote:

I just bought the entire tool steel inventory at a mold making shop
auction. 1000 lbs. of 4140, A2, D2, H13, S7, 420 stainless, O1, W1
and P20. Also about 2000 lbs. of 1018 and Cold Rolled and 1000 lbs.
of Aluminum, several grades.

I've looked up all the steels in my "Heat treatment, selection, and
application of TOOL STEELS" book. P20 heat treat conditions are given;
harden at 1525 F oil quench. As hardened Rc is listed as 51. The book
also includes a table of tempering results. But no where in the book
is there any info on what application to use this steel for. Anyone
know?

Karl

GLOAT and what's P20 tool steel
 

On Mon, 14 Jul 2003 20:18:32 -0500, Karl Townsend
wrote:

I just bought the entire tool steel inventory at a mold making shop
auction. 1000 lbs. of 4140, A2, D2, H13, S7, 420 stainless, O1, W1
and P20. Also about 2000 lbs. of 1018 and Cold Rolled and 1000 lbs.
of Aluminum, several grades.

I've looked up all the steels in my "Heat treatment, selection, and
application of TOOL STEELS" book. P20 heat treat conditions are given;
harden at 1525 F oil quench. As hardened Rc is listed as 51. The book
also includes a table of tempering results. But no where in the book
is there any info on what application to use this steel for. Anyone
know?

Karl

P20 is primarily used for making molds, oddly enough.....

Gunner

"What do you call someone in possesion of all the facts? Paranoid.-William Burroughs

GLOAT and what's P20 tool steel
 

On Mon, 14 Jul 2003 21:58:38 -0500, Pete & sheri
wrote:

I alway thought of P20 as "vacuum degassed" 4140.

You will probably want to throw the S7 away, so I will be glad to take
it off your hands.


Yea, you're right, but the shipping cost is so high I think I'll just
toss it in the ditch to hold down water erosion G

Karl