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- Users: A_Alrumaidh
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ANSI/ASME B1.20.1 thread with API 5B
Hi, I reviewed a material certificate for a pipe nipple with threading to ANSI/ASME B1.20.1 NPT. However, our requirement was threading to API 5B Table 3. Can I accept this deviation? I checked the dimensional requirements of both specifications and found a minor difference in the height of...- A_Alrumaidh
- Thread
- Replies: 1
- Forum: ASME (mechanical) Code Issues
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API 5L PSL 1 Heat Treatment
I'm reviewing the latest API 5L April 2018. I'm interested to know the heat treatment requirement for PSL 1 Pipe material, but I can't find it anywhere!! I appreciate if someone can guide me to the clause that specifies this requirement.- A_Alrumaidh
- Thread
- Replies: 1
- Forum: API (American Petroleum Institute) Code Issues
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Why measure Hardness in addition to Strength?
Why do material specifications (ASTM/ASME) limit the maximum Hardness value, and not Yield Strength? I know that steels with high strength -above a certain limit- indicate a microstructure that is more susceptible to cracking. So why not represent microstructure by Yield Strength? Both hardness...- A_Alrumaidh
- Thread
- Replies: 26
- Forum: Metal and Metallurgy engineering
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API 571 Creep Threshold
In that case, on what basis did API 579-1 specify the temperature thresholds in Table 4.1? Is there a criterion similar to the one written in ASME 2D?- A_Alrumaidh
- Post #5
- Forum: API (American Petroleum Institute) Code Issues
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API 571 Creep Threshold
TGS4, I agree with you in that the temperature limits between ASME and API 579 are somewhat similar. In ASME, it clearly states the criteria on which these limits were specified (0.01%/1,000hr or 100,000 minimum rupture life). API 579, assessment level 1, specifies a maximum damage of 25%...- A_Alrumaidh
- Post #3
- Forum: API (American Petroleum Institute) Code Issues
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API 571 Creep Threshold
Dear, I was studying the API 571 about damage mechanisms and specifically, Creep & Stress Rupture. One thing that caught my attention was Table 4-3 "Threshold Temperatures for Creep". In this table, different materials are listed with corresponding minimum temperatures at which creep becomes a...- A_Alrumaidh
- Thread
- Replies: 4
- Forum: API (American Petroleum Institute) Code Issues
