NBN A 22-203-1972
Black heart malleable iron classification

Standard No.

NBN A 22-203-1972

Release Date

1972

Published By

BE-NBN

Latest

NBN A 22-203-1972

Scope

This standard concerns black-core malleable cast irons, the classification of which is establis ed on the basis of mechanical characteris ics.

NBN A 22-203-1972 history

• 1972 NBN A 22-203-1972 Black heart malleable iron classification