Tungsten bar--tungsten bar manufacturer and supplier

This is a subsite of Chinatungsten.com for especially introducing one type of our products-tungsten bar,tungsten rod, tungsten carbide bar, tungsten alloy bar, pure tungsten bar which always used for melting steel alloy and the other usages.
We hope in our website you may find the materials tungsten bar,tungsten rod, tungsten carbide bar, tungsten alloy bar, pure tungsten bar which meet your requirement. But if you cannot find what you need, please visit our general site Chinatungsten for more information about tungsten bar,tungsten rod, tungsten carbide bar,tungsten alloy bar, pure tungsten bar, or you may contact us directly for your requirements and/or your questions.

Grade

In reference to different chemical components and applying requirement, the grades of tungsten rod are divided into four categories:W1, W2 ,W3,W4.

Dimensions

(10-14)×(10-14)×(400-600) mm
The length of the finished products tungsten bar, tungsten rod for W1, W2, and W3 should not be less than 300mm, and that for W4 should not be less than 30mm.

Appearance

The appearance of tungsten bar, tungsten rod, turns to be metallically gray or dark gray. Hygroscopy is not allowed on the appearance of W1 ,W2, and W3 tungsten bar, tungsten rod.

Surface State

Any oxidation, contamination, and severe excessive fusion, bubbling, delamination, or crack is not allowed for product W1. Camber should be no more than 10mm. Any excessive fusion, bubble, delamination, crack, surface bulky crystallization or severe oxidation &contamination are not allowed for products W2 and W3. The length of the spalls should not be more than 8mm, width no more than 3mm, depth no more than 1mm; The diameter of mechanical pitting should not be more than 1mm, depth no more than 0.5mm; Camber should be no more than 4mm.
Any oxidation or contamination is not allowed for product w4.
The cartridge of the vertical sintering part should be cut off, and the section is not allowed to be loose or intermingled.

Physical property

The density for W2, W3 tungsten bar,tungsten rod is more than 17.5g/cm³.
Measured data for the section grain size of W2, W3 can be provided. If the buyer has any other special demand, it can be discussed on the base of mutual negotiation.

Quality Guarantee

The buyer should take an acceptance inspection on the goods in accordance with this standard in three months from the day of getting the goods. If the inspecting results do not meet the grade criteria set on the Quality Guarantee, the products is still regarded as unqualified after the unsuccessful mutual test.

Package

Tungsten bar,tungsten rod, tungsten carbide bar,tungsten alloy bar, pure tungsten bar should be package in wooden boxes with inner shaped foam,6-12 pieces and 40kgs max. net each.

Transportation

During the transportation,tungsten bar,tungsten rod,tungsten carbide bar, tungsten alloy bar, pure tungsten bar should be moisture proof and clear of violent collision.

Storage

Storage place: dry, ventilated, acid & alkali proof, anti-oxidant. The storage time of tungsten bar, tungsten rod,tungsten carbide bar, tungsten alloy bar, pure tungsten bar should be limited in six months.

Chemical Composition

GRADE		W1	W2	W3	W4
Purity (%) min.	W	99.95	99.95	99.70	99.00
IMPURITY (ppm) max.	Fe	50	50	100	500
	Ni	30	30	50	3000
	Al	20	20	50	50
	Si	30	30	100	100
	Ca	30	30	50	50
	Mg	20	20	50	100
	Mo	100	100	2000	2000
	P	10	10	20	50
	C	50	80	100	100
	O	30	30	50	80
	N	30	30	---	---
	Pb	1	1	1	10
	Bi	1	1	1	10
	Sn	3	3	3	10
	Sb	10	10	10	10
	As	20	20	20	20
Application		Tungsten-base alloy Material	Processing Material	Processing Material	Alloy Addition

Grades		WB-1	WB-2	WB-3	WB-4	Typical-1	Typical-2
Impurities %,max	Pb	--	--	--	0.001	--	0.001
	Bi	--	--	--	0.001	--	0.001
	Sn	--	--	--	0.001	--	0.001
	As	--	--	--	0.002	--	0.001
	Fe	0.005	0.005	0.010	0.05	0.005	0.020
	Ni	0.003	0.003	0.005	0.30	0.002	0.005
	Al	0.002	0.002	0.005	0.005	0.001	0.003
	Si	0.003	0.003	0.010	0.010	0.0015	0.002
	Ca	0.003	0.003	0.005	0.005	0.002	0.005
	Mg	0.002	0.002	0.005	0.010	0.001	0.001
	Mo	0.010	0.010	0.20	0.20	0.003	0.050
	P	0.001	0.001	0.002	0.005	0.001	0.001
	C	0.005	0.008	0.010	0.010	0.003	0.003
	O	0.003	0.003	0.005	0.008	0.003	0.008
	N	0.003	0.003	--	--	0.003	--
	Sb	--	--	--	0.001	--	0.0005
Uses		Material for making tungsten alloy	For Processing material	For processing material	For alloy additive	For processing material	For alloy additive

Packing: Different packing is available according to the customers' requirements.
Note: All other specifications products are available according the customers' requirements


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