Brittle Cast iron and its slightly more modern cousin ductile iron played a really important part in building our urban infrastructure. About the only thing wrong with these materials is that if you smack them hard enough they break. Share this:TwitterFacebookLike this:Like Loading... Related Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. ( Log Out / Change ) You are commenting using your Google account. ( Log Out / Change ) You are commenting using your Twitter account. ( Log Out / Change ) You are commenting using your Facebook account. ( Log Out / Change ) Cancel Connecting to %s Notify me of new comments via email. Notify me of new posts via email.