Ug-101 m tensile values

[Redavocado]

We are being required by ABSA in Canada to provide actual tensile test values from the average of 3 samples cut from fitting which have been burst tested per UG-101 instead of the maximum tensile value provided on the mill certification of the raw material used for the fabrication of the burst samples. This seems over the top unnecessary given that an average over samples would yield a lower than max and reduce the factor of safety. Where does the code support the use of mill spec max tensile value rather than actual test samples? These fittings are very tiny and cutting thee samples from them would be meaningless.

 

[eliebl]

I guess this depends upon the material used. If the material specification shows an upper limit then it would appear that this is permitted. If the specification does not impose an upper limit they you would need to take tensile specimens.

 

[metengr]

We are being required by ABSA in Canada to provide actual tensile test values from the average of 3 samples cut from fitting which have been burst tested per UG-101 instead of the maximum tensile value provided on the mill certification of the raw material used for the fabrication of the burst samples.

Why is ABSA in CA recommending this? I would send them an inquiry.

 

[rumandcola]

Do you perform a heat treatment or work hardening procedure on the material after it arrives from the mill? These manufacturing processes alter the tensile strength.