Friday, November 22, 2013

[MW:19338] Chemical composition ASTM A234 Gr. WPB

Please, 

I need solve a doubt about chemical composition of ASTM A234 Gr. WPB.

In the table 1 for grade WPB, for Cr is specified 0,40 max. and for Mo is specified 0,15 max., but in note F (The sum of Cr + Mo = 0,32 max.), how can be this? if for Cr is allowed until 0,40.

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