For a project I am working on, we have A516GR70MT plate that is required to have CVN testing provided. We specified the testing be done at -56F but I think it is generally done at -50F or -45C with a requirement of 20J if I remember correctly. In my research for this project, I found that the...
Hi all, just wanted to follow up and share our results. We had A588 and A709 structural shapes tested at -56F.
The A709 was untreated as their metallurgist said heat treating this particular grade would not help our cause but in the end it failed to meet our requirements of 15ft-lbs.
The...
Dalin,
I just had normalized A588 structural shapes tested at -56F. We normalized at 1700F for approximately 20 minutes and had average results of 45ft-lbs up to 142ft-lbs on some bigger shapes. I know this is not exactly what you're looking for but it might work at -60.
-Dakers
Hi all, just wanted to follow up and share our results. We had A588 and A709 structural shapes tested at -56F.
The A709 was untreated as their metallurgist said heat treating this particular grade would not help our cause but in the end it failed to meet our requirements of 15ft-lbs.
The...
TLHS - Contacting Russian suppliers was an idea of mine but seeing as how the job has fallen behind due to the original order of A572 not performing as well as we had thought it would, we cannot afford to wait for steel to be imported from Russia. The Canadian grade sounds like a good idea with...
RobertHale - The average of all three tests needs to be above 15lb-ft but two of them cannot be below that.
For example, 20, 14, 14 would give us an average of 16lb-ft which would pass but since there were two 14 values, we would fail.
17, 17, 14 would give us the same average of 16lb-ft...
Hello,
I am working on a project and I am having difficulty finding structural steel to be used on the job. The final location for the heater is in Siberia and the customer has asked that we use low temp carbon steel and that all steel be rated for -56degreesF. Currently we are purchasing...
weldstan - That's just the problem, none of our mill suppliers have ever had to deal with ambient temperatures being so low (-56F) requiring carbon steel so they haven't been able to offer any alternatives. Apparently they generally deal within the states where a temperature that low would...
desertfox - there seemed to be several specs in that pdf that met our requirements so thank you! It seems that A633 is equivalent to S355 NL. Would you happen to know if S355 NL is available in structural shapes? I am only finding A633 steel plate.
Thanks again! -Dakers
gtaw - The A709 50W seems like it could work. Do you know if it is available in structural shapes such as C-channel, I-beam, and Square Tubing? Do you know of any suppliers in the U.S.?
Thank you! -Dakers
metengr - Yes we are doing just that. Purchasing A572, sending it to be heat treated, and sending a sample of the heat treated material to a test facility to be impact tested. For example we call out 10" x 25# channel to be tested at -56F with three test specimens to meet an average of 15ft-lbs...
Hello,
I am currently working on a project and I am having difficulty finding structural steel to be used on the job. The final location for the heater is in Siberia and the customer has asked that we use low temp carbon steel and that all steel be rated for -56degreesF. Currently we are...
