I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.
--
http://fija.org/

On Sunday, August 25, 2013 1:47:03 PM UTC-4, azotic wrote:

The

stock i have on hand is 1144 and 4140. Any

ideas on thee best choice of material for this

project?



Best Regards

Tom.


Best as in easiest to machine or best as in strongest? You have not provided enough information for anyone to figure out the stress.

Dan

On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

1144 stresspreoff is a delight to machine. Use it if you don't need
exceptional poperties, like long die life.

4140 can be more durable if properly heat treated.

Karl

wrote in message
...
On Sunday, August 25, 2013 1:47:03 PM UTC-4, azotic wrote:

The

stock i have on hand is 1144 and 4140. Any

ideas on thee best choice of material for this

project?



Best Regards

Tom.


Best as in easiest to machine or best as in strongest? You have not
provided enough information for anyone to figure out the stress.

Dan

Strongest, machining either is not a problem. They will see limited use and
no heat treating
after machining. They will be used once in a while when i need to make a
bracket etc.
Saftey is my main concern, i don't want to encounter an unexpected failure
and have
steel flying around my shop.

Best Regards
Tom.

"Karl Townsend" wrote in message
...
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

1144 stresspreoff is a delight to machine. Use it if you don't need
exceptional poperties, like long die life.

4140 can be more durable if properly heat treated.

Karl

Tool life is not a concern as these will be used maybe 4 times a year
to make an odd bracket i need. Does the 5 times saftey factor apply
to 1144? Say i want to bend 1/4" x 3" hot roll to 90 degrees will the punch
and die have to be 1-1/4" width to be safe?

TIA

Best Regards
Tom.

On Sun, 25 Aug 2013 12:09:38 -0700, "Howard Beal"
wrote:


"Karl Townsend" wrote in message
.. .
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

1144 stresspreoff is a delight to machine. Use it if you don't need
exceptional poperties, like long die life.

4140 can be more durable if properly heat treated.

Karl

Tool life is not a concern as these will be used maybe 4 times a year
to make an odd bracket i need. Does the 5 times saftey factor apply
to 1144? Say i want to bend 1/4" x 3" hot roll to 90 degrees will the punch
and die have to be 1-1/4" width to be safe?

TIA

Best Regards
Tom.

You're using the "that should be plenty strong" method. I'd go with
that. I would cheet on the punch a bit if needed.

A whole pickup load of punches and dies fell in my son's pickup on his
way home from work, about three feet each of every conceivable style.
Happens to be the exact width of my hydraulic press. I'll never need
to build one.

Karl

On Sun, 25 Aug 2013 15:08:18 -0500, Karl Townsend
wrote:

On Sun, 25 Aug 2013 12:09:38 -0700, "Howard Beal"
wrote:


"Karl Townsend" wrote in message
. ..
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

1144 stresspreoff is a delight to machine. Use it if you don't need
exceptional poperties, like long die life.

4140 can be more durable if properly heat treated.

Karl

Tool life is not a concern as these will be used maybe 4 times a year
to make an odd bracket i need. Does the 5 times saftey factor apply
to 1144? Say i want to bend 1/4" x 3" hot roll to 90 degrees will the punch
and die have to be 1-1/4" width to be safe?

TIA

Best Regards
Tom.

You're using the "that should be plenty strong" method. I'd go with
that. I would cheet on the punch a bit if needed.

A whole pickup load of punches and dies fell in my son's pickup on his
way home from work, about three feet each of every conceivable style.
Happens to be the exact width of my hydraulic press. I'll never need
to build one.

Karl

Dont you just hate it when such mysterious actions of the god(s) loads
you down with such trash? Sigh...its a curse I tell you..a Curse!!


"There are no leftists in mainstream American politics.

Just two right wing parties, one hard right and one softer."
Christopher A. Lee, 8/18/2013

On 8/25/2013 18:00, Gunner Asch wrote:
SNIP


Dont you just hate it when such mysterious actions of the god(s) loads
you down with such trash? Sigh...its a curse I tell you..a Curse!!

The curse part is I don't have the space to store all of it. G


--
Steve Walker
(remove brain when replying)

"Karl Townsend" wrote in message
...
On Sun, 25 Aug 2013 12:09:38 -0700, "Howard Beal"
wrote:


"Karl Townsend" wrote in message
. ..
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

1144 stresspreoff is a delight to machine. Use it if you don't need
exceptional poperties, like long die life.

4140 can be more durable if properly heat treated.

Karl

Tool life is not a concern as these will be used maybe 4 times a year
to make an odd bracket i need. Does the 5 times saftey factor apply
to 1144? Say i want to bend 1/4" x 3" hot roll to 90 degrees will the
punch
and die have to be 1-1/4" width to be safe?

TIA

Best Regards
Tom.

You're using the "that should be plenty strong" method. I'd go with
that. I would cheet on the punch a bit if needed.

A whole pickup load of punches and dies fell in my son's pickup on his
way home from work, about three feet each of every conceivable style.
Happens to be the exact width of my hydraulic press. I'll never need
to build one.

Karl

Nice score.

Best Regards
Tom.

On Sun, 25 Aug 2013 18:48:41 -0400, Steve Walker
wrote:

On 8/25/2013 18:00, Gunner Asch wrote:
SNIP


Dont you just hate it when such mysterious actions of the god(s) loads
you down with such trash? Sigh...its a curse I tell you..a Curse!!

The curse part is I don't have the space to store all of it. G

What...no Home Depot storage sheds in your area?


"There are no leftists in mainstream American politics.

Just two right wing parties, one hard right and one softer."
Christopher A. Lee, 8/18/2013

On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

It depends on how and how much you're going to load it. 4140 is a lot
stronger but the question is whether you need the strength.

Comparing them in the normalized condition, which is a common
condition in which they're sold, 4140 has about 35% more tensile yield
strength, a few percent more hardness, a few percent more elongation
before it breaks, and about 20% - 25% more impact strength.

4140 is both tougher and stronger than 1144. Again, though, the
question of which is "best" depends on whether you'll gain any
practical advantage from the extra strength.

--
Ed Huntress

"Ed Huntress" wrote in message
...
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

It depends on how and how much you're going to load it. 4140 is a lot
stronger but the question is whether you need the strength.

Comparing them in the normalized condition, which is a common
condition in which they're sold, 4140 has about 35% more tensile yield
strength, a few percent more hardness, a few percent more elongation
before it breaks, and about 20% - 25% more impact strength.

4140 is both tougher and stronger than 1144. Again, though, the
question of which is "best" depends on whether you'll gain any
practical advantage from the extra strength.

--
Ed Huntress


Thanks Ed, thats the info i was looking for. Gonna go with
4140.

Best Regards
Tom.

On Sun, 25 Aug 2013 20:40:54 -0700, "Howard Beal"
wrote:


"Ed Huntress" wrote in message
.. .
On Sun, 25 Aug 2013 10:47:03 -0700, "azotic"
wrote:

I intend to make some bending fixtures for
use in my 50 ton hydraulic press. The maximum
i would be bending 3/8 x 6" hot roll plate. The
stock i have on hand is 1144 and 4140. Any
ideas on thee best choice of material for this
project?

Best Regards
Tom.

It depends on how and how much you're going to load it. 4140 is a lot
stronger but the question is whether you need the strength.

Comparing them in the normalized condition, which is a common
condition in which they're sold, 4140 has about 35% more tensile yield
strength, a few percent more hardness, a few percent more elongation
before it breaks, and about 20% - 25% more impact strength.

4140 is both tougher and stronger than 1144. Again, though, the
question of which is "best" depends on whether you'll gain any
practical advantage from the extra strength.

--
Ed Huntress


Thanks Ed, thats the info i was looking for. Gonna go with
4140.

Best Regards
Tom.

You're welcome, Tom. I've never bent anything as thick as 3/8" in a
brake, but it's gotta be a load on the fixtures. It sounds safer to go
with the 4140, not knowing what the loads actually are.

And if that doesn't handle it, you can get your second set g
heat-treated for a big boost in strength.

Good luck with it.

--
Ed Huntress