The Effect of Cooling Rate on Bainite Phase Formation in Austempered Nickel-Molybdenum Gray Cast Iron

Table 3

The result of hardness test.

Stair number	BH	Micro hardness
		Martensite	Bainite
1st stair	330	692	239
2nd stair	297	649	286
3rd stair	273	598	292
4th stair	287	617	247
5th stair	302	625	213