searc for fine grained steel plate with through thickness properties
searc for fine grained steel plate with through thickness properties
(OP)
Dear all,
I am searching for a fine grained steel plate, which should be normalised or thermo-mechanical treated, and should have a high impact toughness. The steel should have a minimum yield strength of 360 MPa and a tensile strength of 455 MPa, and should have controlled through-thickness properties.
Who can advise me ?
Thanks in advance,
Koen
I am searching for a fine grained steel plate, which should be normalised or thermo-mechanical treated, and should have a high impact toughness. The steel should have a minimum yield strength of 360 MPa and a tensile strength of 455 MPa, and should have controlled through-thickness properties.
Who can advise me ?
Thanks in advance,
Koen





RE: searc for fine grained steel plate with through thickness properties
You don't provide enough information to really help narrow down your choices. What is the application? What about corrosion resistance? What about service temperature?
RE: searc for fine grained steel plate with through thickness properties
You can see the application here : http://w
The plates shall be used for welding trials to join pipes.
I would like to use a plate with a high impact toughness (the higher the better).
Since the rolling direction of the plate is perpendicular to the rolling direction of the pipes, I like to avoid segregation effects, therefor I would like to have normalised steel, with controlled through thickness properties (pure metals).
Corrosion resistance is not important.
I hope this is enough information ? If not, please ask.
Thanks,
Koen
RE: searc for fine grained steel plate with through thickness properties
RE: searc for fine grained steel plate with through thickness properties
RE: searc for fine grained steel plate with through thickness properties
Purchasing API 5LX microalloyed skelp with appropriate properties would be great but is not not practical for your research. I suspect that, at some point, you will need to purchase microalloyed API 5LX pipe to complete your study.
RE: searc for fine grained steel plate with through thickness properties
There is another option. Make the weld ring material out of the same material as the pipeline. You can purchase an added pipe spool to machine the weld rings.
RE: searc for fine grained steel plate with through thickness properties
What do you mean, that we should by pipes, and machine plates out of it ?
Metengr,
The quenched and tempered materials were used in the beginning, but not anymore. The impact toughness was too low in some cases.
Do you think it is possible to buy a plate X52 ?
regards,
Koen
RE: searc for fine grained steel plate with through thickness properties
I did not state that you should purchase pipe and machine plates out of it.
RE: searc for fine grained steel plate with through thickness properties
The weld ring used for friction welding pipe spools should be similar to the pipe base materials. As I stated, and after reading the link you provided, why not machine weld rings out of extra pipe material? You can wafer cut the weld rings and optimize the length for this process.
RE: searc for fine grained steel plate with through thickness properties
We did that by the way for welding X70.
But it's more labour intensive of course...
I'll try finding pressure vessel steel ASTM A517.
How about the option to use a thermo-mechanical treated steel ? I suppose it is lower alloyed than pressure vessel steel, so the risk exists that you loose all the mech. properties after welding...
RE: searc for fine grained steel plate with through thickness properties
After thinking about this, I really don't see any benefit to using a weld ring material that is specifically made from micro-alloyed or TMCP steel plate.
RE: searc for fine grained steel plate with through thickness properties
Since it appears you are in Europe, you may prefer to look for EN steels rather than ASTM. EN 10028-2 is the standard for flat steel for pressure purposes, normalized. 10028-5 is for TM rolled, and -6 is for Q&T. Since this is solid-state welding and not arc welding, you may be able to use TM rolled steel and not suffer too much degradation in properties. I'm sure one of the divisions within Arcelor produces TM or Q&T steel for PV applications. Probably voestalpine too.
RE: searc for fine grained steel plate with through thickness properties
It has a yield strength of min. 460 MPa, and is normalised.
I looked at this material through the microscope, but it has a banded structure. See : http://www.bil-ibs.be/nl/p460NL1.jpg
I fear that the carbon rich zones (with the pearlite) will transform in bainitic microstructures, with a high hardness and a low impact toughness.
Would it be possible to obtain a material which has not this banded structure ?
thanks,
Koen
RE: searc for fine grained steel plate with through thickness properties