The software assumes that adequate strength flange materials are being used. Stainless Steel 316 flanges are not to be tensioned with the recommended bolt stresses.
Standard ANSI B16.5 Flanges manufactured from material with yield strength equal to or greater than 247N/mm2 (35840lbs/In2)
ANSI B16.5 Flange specification does not implicitly specify a minimum target bolt stress. The software will suggest recommended target bolt stress values for these flanges. The recommended values are based on the experience of Tentec Limited and are used without any guarantee or liability to Tentec Limited.
The recommended bolt stress values assume that flange material yield strength is equal to or greater than 247N/mm2 (35840lbs/In2).