MatMan83
Materials
- Jul 3, 2018
- 3
Hi,
I have a question regarding EN13480 wall thickness calcs and the elevated temperature of materials when they are not explicitly stated in the specifications. For example, P265GH and P265NL - P265GH has tabulated values for proof strength at elevated temperatures (RP0.2,t) in EN10216-2 whilst P265NL only has proof strength at room temperature (Rp0.2) and impact test requirements for low temp service in EN10216-4. I need a material for a design temp range of -40°C to +200°C. My questions are:
1) If the values for yield strength at elevated temperature (Rp02t) are the same for both of these materials, at least for a mid range temp of 200°C, then I could use P265NL?
2) If they aren't the same, then should I use Rm/2.4 to determine the design stress, f or could P265GH be specified with a low temp impact test to make it suitable for -40°C service?
Thanks.
I have a question regarding EN13480 wall thickness calcs and the elevated temperature of materials when they are not explicitly stated in the specifications. For example, P265GH and P265NL - P265GH has tabulated values for proof strength at elevated temperatures (RP0.2,t) in EN10216-2 whilst P265NL only has proof strength at room temperature (Rp0.2) and impact test requirements for low temp service in EN10216-4. I need a material for a design temp range of -40°C to +200°C. My questions are:
1) If the values for yield strength at elevated temperature (Rp02t) are the same for both of these materials, at least for a mid range temp of 200°C, then I could use P265NL?
2) If they aren't the same, then should I use Rm/2.4 to determine the design stress, f or could P265GH be specified with a low temp impact test to make it suitable for -40°C service?
Thanks.
