[MW:19342] RES: 19338] Chemical composition ASTM A234 Gr. WPB

Follow my interpretation:

You can have 0.40% “Cr” individually without presence of “Mo”; by the other hand if you have “Cr” + “Mo” the sum cannot exceed .32.

 

regards

 

De: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Em nome de PUB:José Luís Ferreira
Enviada em: sexta-feira, 22 de novembro de 2013 10:56
Para: materials-welding@googlegroups.com
Assunto: [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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