Tangent modulus A500 Gr.B

- May 7, 2019 at 5:28 pm
  
  mekafime
  Subscriber
  
  Hi everybody,
  
  Please, how can I know the tangent modulus of A500 Gr. B (HSS)?
  
  I try to model a connection subject to loads but the material must be non-linear, in catalogs I only get the yield and ultimate.
  
  Thanks!
- May 7, 2019 at 6:38 pm
  
  peteroznewman
  Subscriber
  
  1) You can obtain a sample of the material, perform a tensile test on it and create your own multilinear plasticity material model from the data. This might not be conservative because the material sample you obtained may have had a larger than typical yield strength, while the product might get built from material that is just above the minimum yield strength in the material specification.
  
  2) You can build a conservative model that assumes the tangent modulus is zero and uses the minimum yield strength in the specification. If the design is made to support the maximum load with that material, then any product made to that design will outperform what the analysis predicted. That is a conservative result.
- May 7, 2019 at 7:40 pm
  mekafime
  Subscriber
```
Hi Peter , I will not do tests, I'm building a theorical model extracting data from manuals.
```