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Home-->Technical |
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Specifications For Drill Rod
| Properties |
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Chemical Analysis |
Cr-V-alloyed tool steel with high strength
Maintains blade sharpness
Good machinability when spheroidized-annealed
Small distortion on oil hardening (possible up to
approx. 9mm)
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C |
1.15% |
| Cr |
0.70% |
| V |
0.10% |
| Si |
0.25% |
| Mn |
0.30% |
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| Examples of Applications |
Twist drills and thread taps, reamers,
piercing dies, ejectors, arbors, engraving tools,
scrapers, files, etc.
Is preferably used with silver steel finish in smallest
tolerances |
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| Delivery Conditions |
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Annealed tensile strength |
| Spheroidized-annealed, drawn, ground and
polished |
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Max 750 N/mm2 (220HB) |
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| Heat Treatment |
| Hot Shaping -> |
1050-850 degrees C |
| Soft Annealing Temperature -> |
710-750 degrees C |
| Hardening Temperature -> |
810-840 degrees C in oil |
|
780-810 degrees C in water |
Hardness
in HRC |
 |
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Annealing Temperature in degrees Celsius |
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| Nomimal Dimension |
Tolerance Zone in mm (external measurements) |
| Over |
To |
h8 (Steel) |
| 0 |
1 |
0 |
-0.014 |
| 1 |
3 |
0 |
-0.014 |
| 3 |
6 |
0 |
-0.018 |
| 6 |
10 |
0 |
-0.022 |
| 10 |
18 |
0 |
-0.027 |
| 18 |
30 |
0 |
-0.033 |
| Nomimal Dimension |
Tolerance Zone in mm (external measurements) |
| Over |
To |
h9 (Stainless Steel) |
| 1 |
3 |
0 |
-0.025 |
| 3 |
6 |
0 |
-0.030 |
| 6 |
10 |
0 |
-0.036 |
| 10 |
18 |
0 |
-0.043 |
| 18 |
30 |
0 |
-0.052 |
*All information is strictly informative
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Contact
us |
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Company Name: Hengsin Industrial Co.,Ltd.
Contact Person: Martin Wang.
Address: 310-5-#55, Zhanongkou Xincun, Jianggan District,Hangzhou,China 310004
Zip: 310004
Tel:86-571-82760351
Mobile:86-131-75103386
Fax:86-571-86973903
Email:sales@fasteners.cc
Email2:Martinwangke@yahoo.com.cn
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