格林美股份有限公司

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分子式Molecular formula：（NH4)10H2W12O42

特点及用途：白色结晶，稍溶于水。主要用于制造三氧化钨或蓝色氧化钨制金属钨粉；金属钨粉的下游产品有钨材系列，如钨条、钨丝等电真空材料；有合金系列，如碳化钨、硬质合金、合金刀片、合金钻头、合金模具等；其他耐磨、耐压、耐高温的机械装备部件等。

关键元素指标Mainly Element Indicators
牌号Type		APT-0	APT-1
WO3 %≥		88.5	88.5
杂质含量（以WO3为基准） Impurity(Based on WO3) 单位unit: %	Al ≤	0.0005	0.001
	As ≤	0.001	0.001
	Bi ≤	0.0001	0.0001
	Ca ≤	0.001	0.001
	Cd ≤	0.0003	0.001
	Co ≤	0.001	0.001
	Cr ≤	0.001	0.001
	Cu ≤	0.0003	0.0005
	Fe ≤	0.001	0.001
	K ≤	0.001	0.0015
	Mg ≤	0.0005	0.0007
	Mn ≤	0.0005	0.001
	Mo ≤	0.002	0.003
	Na ≤	0.001	0.0015
	Ni ≤	0.0005	0.0005
	P ≤	0.0007	0.001
	Pb ≤	0.0001	0.0001
	S ≤	0.0008	0.001
	Sb ≤	0.0005	0.001
	Si ≤	0.001	0.001
	Sn ≤	0.0002	0.0003
	Ti ≤	0.001	0.001
	V ≤	0.001	0.001

级别

Grade

粗级

Coarse size

中级

Medium size

细级

Fine size

超细

Ultra-fine size

平均粒度FSSS/μm

＞35

＞20-35

10-20

＜10

Address:20/F, Building A, Rongchao Binhai Mansion, Haixiu Road, New Centre District, Bao'an, Shenzhen, China

Telephone:86-755-33386666

Fax:86-755-33895777

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