China Factory Price Tungsten Carbide Rods With Double Helical Holes 30(r),Cemented Carbide Rod With Two Helix Holes Manufacturer and Supplier

Factory Price Tungsten Carbide Rods With Double Helical Holes 30(r),Cemented Carbide Rod With Two Helix Holes

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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