Characteristics Of High Manganese Steel Castings

Posted by greentelftthgane on March 29th, 2019

Characteristics Of High Manganese Steel Castings

The characteristic of High Manganese Steel Castings decide it is suitable as wearing resistance part.

Single metallographic structure of high manganese steel decide it has ability to create work hardening. Within high impact environment, the surface hardness is always more than 500HB, but the inside also keep high toughness.

As a casting, high manganese part also need basical work to ensure it inside quality. The high manganese steel follows sequential solidification, the riser and the pouring system should be designed rightly to ensure high density inside. The shrinkage rate of high manganese steel is more than carbon steel, the high manganese steel need low pouring temperature, the solidification time is shorter than carbon steel, so the riser should be given more safty margin than carbon steel.

Hadfield steel invented in 1882 has an enormous capacity for work-hardening upon impact and it is commonly used for railroad components such as frogs and crossings and for rock-handling equipment. It has nominal composition of iron, 1.0 to 1.4 % carbon and 10 to 14% manganese in a 1 to 10 ratio.

The present paper deals with a comprehensive analysis on the overview of high manganese steel casting. The effect of chemical composition was analysed highlighting how different alloying element can affect the final mechanical properties of high manganese steel casting. Good and bad practices were reviewed, looking at how high melting temperature can course micro and macro segregation at the grain boundaries resulting in uneven wear rate and loss of strength and impact of the said steel. A Proper heat treatment cycle was discussed and typical mechanical properties and work hardening rate of the steel was also emphasised on, so as to know on which application is the steel best suited for.