Designation			Chemical Compositions(%)					g/m3Density≥
	μm
			Mg≥	impurities≤
				Fe	Cl	H2o	Balance
FM1	+500	0.3	98.5	0.2	0.005	0.1	0.2	0.35
	+450	2
	-250	8
FM2	+450	0.3
	+315	8
	-180	12
FM3	+450	0.3						0.38
	+250	8
	-140	12
FM4	+250	0.3						0.40
	+180	6
	-100	12
FM5	+160	0.3						0.45