Specifications For Drill Rod

Alloy Tool Steel Drill Rod
CR-V Alloy Silversteel

115 Cr V3
Steel Nr. 1.2210

Properties 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)
C 1.15%
Cr 0.70%
V 0.10%
Si 0.25%
Mn 0.30%
 
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
 
Delivery Conditions Annealed tensile strength
Spheroidized-annealed, drawn, ground and polished Max 750 N/mm2 (220HB)
 
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
Annealing Table
Annealing Temperature in degrees Celsius

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

DIN 175-h8 Steel DIN 671-h9 Stainless Steel

*All information is strictly informative