ASTM A815 - Table 4 - Tolerances?
ASTM A815 - Table 4 - Tolerances?
(OP)
Hello All,
I am not a engineer, but a purchaser of steel pipe and fittings. I want to ask the experts out there a question pertaining to common ASTM practices.
I had a metal fabricator create several swage nipples from round bar, material S32750. The round bar (raw material) MTR lists the tensile strength as 115,748 KSI. This is slightly below the minimum of 116,000 KSI for ASTM A815, Table 4. My customer's engineer is giving me a hard time about this reading on the MTR.
• In your experience, are the ASTM minimums and maximums hard numbers, or is there a +/- tolerance?
• Or is every ASTM standard different?
I have attached Table 4 as a JPG for review.
Any help would be most appreciated!
I am not a engineer, but a purchaser of steel pipe and fittings. I want to ask the experts out there a question pertaining to common ASTM practices.
I had a metal fabricator create several swage nipples from round bar, material S32750. The round bar (raw material) MTR lists the tensile strength as 115,748 KSI. This is slightly below the minimum of 116,000 KSI for ASTM A815, Table 4. My customer's engineer is giving me a hard time about this reading on the MTR.
• In your experience, are the ASTM minimums and maximums hard numbers, or is there a +/- tolerance?
• Or is every ASTM standard different?
I have attached Table 4 as a JPG for review.
Any help would be most appreciated!





RE: ASTM A815 - Table 4 - Tolerances?
RE: ASTM A815 - Table 4 - Tolerances?
My customers are mainly in South America. Where we use a period between whole numbers and decimal places, they use commas. And vice versa. So, the 115,748 KSI for them is the same as 115.748 KSI for us. I should have clarified as such.
Thank you again!
RE: ASTM A815 - Table 4 - Tolerances?
RE: ASTM A815 - Table 4 - Tolerances?
But if you had parts forged then they should have been reheat treated, and then retested.
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P.E. Metallurgy, Plymouth Tube