ASTM Material Grades Abbrevation

[youngpiper]

Hai Friends,
I need some guidence on the abbrevations used in ASTM materials.
For Example. "ASTM A216 Gr. WCB".
What does it mean exactly?.
Where I should refer to know more about these abb.s?.
Kindly upload if any body have any sort of materials which can help me?
Thanks in advance....Please hekp m

[selmagis]

Start on:

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[selmagis]

Could be useful:

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[HALVI]

WCB means weldable casting of Gr. B