China New Delivery for Purity 99.95% Tungsten Rod For Heating Element From Manufacturer and Supplier

New Delivery for Purity 99.95% Tungsten Rod For Heating Element From

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Our benefits are decrease charges,dynamic income group,specialised QC,solid factories,top quality products and services for New Delivery for Purity 99.95% Tungsten Rod For Heating Element From, We will keep working hard and as we try our best to supply the best quality products, most competitive price and excellent service to every customer. Your satisfaction, our glory!!!
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Chemical composition:

Main and minor components	Min.content(%)	ASTM B760
W	99.95	balance
Impurities	Max.values (μg/g)	Max.values (μg/g)
Al	15	-
Cu	10	-
Cr	20	-
Fe	30	100
K	10	-
Ni	20	100
Si	20	100
Mo	100	-
C	30	100
H	5	-
N	5	100
O	20	100
Cd	5	-
Hg	1	-
Pb	5	-

Diameter and tolerances:

Diameter (mm)	Tolerance
	Straightened	Forged	Turned	Ground
0.50-0.99	-	-		±0.007
1.00-1.99	-	-		±0.010
2.00-2.99	±2.0 %	-		±0.015
3.00-15.9	-	-		±0.020
16.0-24.9	-	±0.30		±0.030
25.0-34.9	-	±0.40		±0.050
35.0-39.9	-	±0.40	±0.30	±0.060
40.0-49.9	-	±0.40	±0.30	±0.20
50.0-90.0	-	±1.00	±0.40	-

Length and straightness:

Diameter (mm)	Production length (mm)	Stiraightness/Meter (mm)
Diameter (mm)	Production length (mm)	Cleaned	Ground/turned
0.50-10.0	≥500	＜2.5	＜2.5
10.1-50.0	≥300	＜2.0	＜1.5
50.1-90.0	≥100	＜2.0	＜1.5

Length tolerance:

Diameter 0.50-30.0 mm
Nominal length (mm)	≥15	15-120	120-400	400-1000	1000-2000	＞2000
Length tolerance(mm)	±0.2	±0.3	±0.5	±2.0	±3.0	±4.0
Diameter ＞30.0 mm
Nominal length (mm)	≥30	30-120	120-400	400-1000	1000-2000	＞2000
Length tolerance(mm)	±0.5	±0.8	±1.2	±4.0	±6.0	±8.0

Density: ≥19.1g/cm³
Nondestructive testing: For diameters＞15.00 mm:100% ultrasonic testing. For diameters of 0.50-50.0mm:Eddy curent tests on rods with ground surface.

Diameter(mm)	Hardness (HV 10)
0.50-2.99	—
3.00-9.99	420-500
10.0-29.9	420-480
30.0-49.9	380-460
≥50	＞350

Surface condition:

Diameter (mm)	Surface condition
0.50-90.0	Chemical cleaned
≥40.0	Turned Ra ≤3.2μm
0.50-30	Centerless ground Ra≤1.0μm
≥40.0	- Centerless ground Ra≤1.2μm