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Specifications
ASTM
Castings
A27 / A27M Grade N2
ASTM A27 / A27M Grade N2
Chemical Properties
Carbon,
B
max
Manganese,
B
max
Silicon, max
Sulfur, max
Phosphorus, max
Note B:
For each reduction of 0.01 % carbon below the maximum specified, an increase of 0.04 % manganese above the maximum specified will be permitted to a maximum of 1.40 % for Grade 70-40 [485-275] and 1.00 % for the other grades.
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Valve
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