Yield Strength for 1986 Metric Steel Shapes
Yield Strength for 1986 Metric Steel Shapes
(OP)
I am a structural engineer that has only worked here in the US with steel shapes from the AISC manual. I have been asked to look at an existing structure that was built/designed in 1986 with metric shapes. I have been able to find information on the dimensions of the members, but I have not been able to determine what yield strength would have been used for this steel. Would it be similar to ASTM A36 (Fy = 36 ksi)? Does anyone have information on what steel strengths would have been used for metric shapes in 1986 and before? IPE, HE, and HI (i believe these are built-up plate sections) shapes.
Thank you in advance for your help..
Thank you in advance for your help..






RE: Yield Strength for 1986 Metric Steel Shapes
RE: Yield Strength for 1986 Metric Steel Shapes
RE: Yield Strength for 1986 Metric Steel Shapes
RE: Yield Strength for 1986 Metric Steel Shapes
If "here in the US" also means the structure is in the US, then A36 is a reasonable lower bound for strength properties in that time period (probably for anything after the mid 1960s). If you need additional metallurgical information (e.g. for welding) or an upper bound on yield strength (e.g. for dynamic/seismic response), testing will be required.
RE: Yield Strength for 1986 Metric Steel Shapes
RE: Yield Strength for 1986 Metric Steel Shapes
Pending more information, I'd still be pretty confident assuming A36 in the meantime, and potentially requiring verification before submitting anything final (given the same caveats above).
RE: Yield Strength for 1986 Metric Steel Shapes
I would think it unlikely to find metric steel shapes with yield stress as low as 36,000 in 1986 but testing is probably the safest way to find out for certain.
BA
RE: Yield Strength for 1986 Metric Steel Shapes
You can see the characteristics in the attached file
Hope it can help
PS : here the link to a design manual of these days
https://mega.nz/#!AElCVKJa!wj17T4paUoj17_C8kMCcYVU...
RE: Yield Strength for 1986 Metric Steel Shapes
RE: Yield Strength for 1986 Metric Steel Shapes
Reread BigInch's post; that steel could be EITHER US sizes/grades or metric sizes/grades AND have been produced and fabricated overseas.
In 1999 we were having a packaged combined cycle (vertical boiler) electric generating unit designed. There was a lump sum option to use either all traditional US sizes/grades or all metric sizes/grades. We went with the metric steel for the cost savings. I argued against doing this for the very reason you are dealing with (future changes)... but, in reality the cost savings were really significant.
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Yield Strength for 1986 Metric Steel Shapes
When you order S235 material, half of the time you get the question from your supplier that they have the same profiles but in a higher quality in stock (S275), "can we sell you those instead for the same price?"
S235 and S275 are very commonly used in Europe for construction.
S355 as well, but costs more, and requires more workmanship, especially when welding is involved.
http://www.fusionpoint.be
http://be.linkedin.com/in/fusionpoint