Characteristics of Grade R4 Steel Manufactured by Ingot Casting and Used in the Production of Offshore Mooring Chains

The objective of this study is to characterise grade R4 steel manufactured by ingot casting that used as the raw material for production offshore mooring chains. Rolled bars have been selected and metallographic analyses micro hardness, tensile Charpy V-notch impact tests performed. Tensile also carried out on links from same steel. Based results presented, influence rolling reduction ratio cooling reheating process observed. Both factors found increase product quality, particularly with respect central segregation homogeneity rolled bars.