Description
| Ductile iron is produced when ferrosilicon and magnesium combine to transform normal cast iron into nodule-shaped crystalline graphite. | ||||||||||||
| When heated appropriately, ductile iron threaded fittings can withstand tensile loads of up to 120,000 psi, significantly more than the 21,000 to 31,000 psi tensile strength of cast iron fittings. |




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