OD 20mm One Central Straight Hole Carbide Rod K20 - K40 For Making Endmills

Price Negotiable

Price: negotiable

MOQ: 10pc

Delivery Time: Standard products in one week

Brand: OUQI

Product Description

OD20mm K20-K40 carbide rods with one central straight hole rod for making endmills

Outer diameter 20mm +0.5

Inner diameter: 3.0mm ±0.10

Length: 330mm 0/+5mm

Surface roughness: Ra 6.3 as Raw sintered

ISO K20-K40

Recommended Carbide grade

Classification	K20-K40
Co %	10
WC incl. doping	90
Density g/ cm3	14.45
Hardness HV30	1620
Fracture toughness	10.6
Transverse rupture strength	4100
Average grain size	0.6

Regular size for one central hole carbide rods:

Outer Diameter mm		TK mm		Inner Diameter mm		Deviation of holes position≤(mm) a	Length mm
OD	Tol.	TK	Tol.	ID	Tol.	Deviation of holes position≤(mm) a	Length	Tol.
4.30	+0/+0.3	1.8	-0.4/0	0.800	±0.1	0.15	330	0/+5.0
5.30		2.0	-0.4/0	0.800	±0.1	0.20	330	0/+5.0
6.30		3.0	-0.5/0	1.000	±0.15	0.20	330	0/+5.0
7.30		3.5	-0.5/0	1.000	±0.15	0.20	330	0/+5.0
8.30		4.0	-0.6/0	1.000	±0.15	0.20	330	0/+5.0
9.30		4.0	-0.6/0	1.400	±0.15	0.20	330	0/+5.0
10.30		5.0	-0.6/0	1.400	±0.15	0.20	330	0/+5.0
11.30	+0/+0.4	5.0	-0.6/0	1.400	±0.15	0.28	330	0/+5.0
12.30		6.0	-0.6/0	1.750	±0.15	0.30	330	0/+5.0
13.30		6.0	-0.6/0	1.750	±0.15	0.34	330	0/+5.0
14.30		7.0	-0.6/0	1.750	±0.15	0.37	330	0/+5.0
15.30		8.0	-0.6/0	2.000	±0.2	0.37	330	0/+5.0
16.30		8.0	-0.6/0	2.000	±0.2	0.40	330	0/+5.0
17.30	+0/+0.6	9.0	-0.6/0	2.000	±0.2	0.47	330	0/+5.0
18.30		9.0	-0.6/0	2.000	±0.2	0.50	330	0/+5.0
19.30		9.0	-0.6/0	2.000	±0.2	0.50	330	0/+5.0
20.30		10.0	-0.8/0	2.500	±0.25	0.50	330	0/+5.0

General tolerance for the h6 finished ground solid carbide rods
Diameter	Tolerance μm	Length	Tolerance	Straightness	Tolerance	Circularity	Tolerances
＜3.0	-6/0	＜100.0	+0.5/+1.0	＜4.0	0.07	<3,0	2,0 micron
3.0-6.0	-8/0	100.0-165.0	+1.0/+2.5	4.5-5.0	0.06	3,0- 6,0	2,5 micron
6.0-1.0	-9/0	165.0-335.0	+1.0/+6.0	5.5-12	0.05	6,1-10,0	3,0 micron
10.0-18.0	-11/0			＞12.5	0.04	10,1-18,0	3,5 micron
18.0-30.0	-13/0					18,1- 30,0	4,0 micron
30.0-50.0	-16/0					30,1- 50,0	5,0 micron

Our tungsten carbide rods:

100% virgin material, no recycled material
Spray drying tower and HIP sintering furnace
Constant excellent quality
Large stock for all sizes, the regular products can be shipped in 3 days, and the special rods can be ground in one week.
100% inspected before delivery. The inspection including raw material and dimension report will be sent you before delivery
Excellent grinding quality, Straightless and circularity could be 0.05 or 0.02.