steel grade for high strain tools ?

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steel grade for high strain tools ?

This topic has 12 replies, 4 voices, and was last updated 10 May 2013 at 17:10 by Raymond Anderson.

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10 May 2013 at 16:44 #119328
Rich2502
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@rich2502
i want to make some gear and bearing pulling tools which look like they're normally drop forged, I have plenty of mild steel, could this be hardned to near the same toughness ? or would i need another grade steel ?

while you can buy the tools cheap off ebay,which snap, the real ones like Sykes Picavant are not cheap.
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10 May 2013 at 16:44 #119340
Rich2502
Participant
@rich2502
i want to make some gear and bearing pulling tools which look like they're normally drop forged, I have plenty of mild steel, could this be hardned to near the same toughness ? or would i need another grade steel ?

while you can buy the tools cheap off ebay,which snap, the real ones like Sykes Picavant are not cheap.
10 May 2013 at 16:44 #119349
Rich2502
Participant
@rich2502
i want to make some gear and bearing pulling tools which look like they're normally drop forged, I have plenty of mild steel, could this be hardned to near the same toughness ? or would i need another grade steel ?

while you can buy the tools cheap off ebay,which snap, the real ones like Sykes Picavant are not cheap.
10 May 2013 at 16:44 #6699
Rich2502
Participant
@rich2502
10 May 2013 at 16:55 #119330
MICHAEL WILLIAMS
Participant
@michaelwilliams41215
Hi Richard ,

There is no way of increasing the toughness of mild steel by heat treatment . You can compenstae for weakness of material to some extent by using thicker section , reinforcement or by welding on bits of better material in some places .

There are specialist steels available for you purpose but two readily available materials which will probably do all you want are gauge plate and old spanners .

The properties of gauge plate are well known and the material can be heat treated for toughness or hardness without to much difficulty .

Spanners are made from particularly tough steel and you can usually buy a sackful for a few pounds at boot sales . Not usually nescessary to heat treat any more .

Regards ,

Michael Williams .
10 May 2013 at 16:55 #119342
MICHAEL WILLIAMS
Participant
@michaelwilliams41215
Hi Richard ,

There is no way of increasing the toughness of mild steel by heat treatment . You can compenstae for weakness of material to some extent by using thicker section , reinforcement or by welding on bits of better material in some places .

There are specialist steels available for you purpose but two readily available materials which will probably do all you want are gauge plate and old spanners .

The properties of gauge plate are well known and the material can be heat treated for toughness or hardness without to much difficulty .

Spanners are made from particularly tough steel and you can usually buy a sackful for a few pounds at boot sales . Not usually nescessary to heat treat any more .

Regards ,

Michael Williams .
10 May 2013 at 16:55 #119350
MICHAEL WILLIAMS
Participant
@michaelwilliams41215
Hi Richard ,

There is no way of increasing the toughness of mild steel by heat treatment . You can compenstae for weakness of material to some extent by using thicker section , reinforcement or by welding on bits of better material in some places .

There are specialist steels available for you purpose but two readily available materials which will probably do all you want are gauge plate and old spanners .

The properties of gauge plate are well known and the material can be heat treated for toughness or hardness without to much difficulty .

Spanners are made from particularly tough steel and you can usually buy a sackful for a few pounds at boot sales . Not usually nescessary to heat treat any more .

Regards ,

Michael Williams .
10 May 2013 at 16:58 #119332
Jeff Dayman
Participant
@jeffdayman43397
AISI 4140, 4340, or one of the 9300 series steels will make very tough and strong pulling tools particularly if forged and then tempered to low/mid hardness.

Unless the parts you want to pull off are very small, forget carburized mild steel.

Oil and water hardening tool steels will often crack if used for such pulling tools with a cantilevered load.

JD
10 May 2013 at 16:58 #119343
Jeff Dayman
Participant
@jeffdayman43397
AISI 4140, 4340, or one of the 9300 series steels will make very tough and strong pulling tools particularly if forged and then tempered to low/mid hardness.

Unless the parts you want to pull off are very small, forget carburized mild steel.

Oil and water hardening tool steels will often crack if used for such pulling tools with a cantilevered load.

JD
10 May 2013 at 16:58 #119352
Jeff Dayman
Participant
@jeffdayman43397
AISI 4140, 4340, or one of the 9300 series steels will make very tough and strong pulling tools particularly if forged and then tempered to low/mid hardness.

Unless the parts you want to pull off are very small, forget carburized mild steel.

Oil and water hardening tool steels will often crack if used for such pulling tools with a cantilevered load.

JD
10 May 2013 at 17:10 #119338
Raymond Anderson
Participant
@raymondanderson34407
Hi Richard,

Jeff's 2 suggested steels [AISI 4140, AISI 4340] are better known here[if you are in the UK] as EN19 ,EN24

any of the 2 would suit just fine. Raymond.
10 May 2013 at 17:10 #119347
Raymond Anderson
Participant
@raymondanderson34407
Hi Richard,

Jeff's 2 suggested steels [AISI 4140, AISI 4340] are better known here[if you are in the UK] as EN19 ,EN24

any of the 2 would suit just fine. Raymond.
10 May 2013 at 17:10 #119357
Raymond Anderson
Participant
@raymondanderson34407
Hi Richard,

Jeff's 2 suggested steels [AISI 4140, AISI 4340] are better known here[if you are in the UK] as EN19 ,EN24

any of the 2 would suit just fine. Raymond.
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