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DIN 3355



Virat Special SteelsDIN 3355

Virat Special Steels is the biggest & leading Supplier & Stockiest of DIN 1.3355 Steels.
Din 1.3355 is a tungsten kind tool steel. Very high resistance to put on and to softening. Just right longevity , reducing potential & deep hardening response.
This grade is on the whole used for turning, planning & slotting instruments, tapes, twist drill, threading dies, profile slicing instruments, broaching instruments & reamers.

Steel Properties

Standard hiqh-speed steel qrade. Itswell-balanced alloycomposition forms the basis of its high_touqhness and good clll:ting edge retention, render'lng it suitable for a large variety of applications.

Physical Properties
Thermal Conductivity at °C 20 350 700
W/(m*K) 32.8 23.5 25.5

For all metal-cutting tools for roughing or finishing such as twist drills, diverse milling cutters, thread dies, broaches, reamers, countersinks, thread chasers, circular saw segments, shaping tools and woodworking tools. Also highly suitable for cold-forming tools such as cold extrusion rams and dies, as well as cutting and precision cutting tools, plastic moulds with elevated wear resistance and screws.

Heat Treatment
Soft annealing °C Cooling Hardness HB
870-900 slowly max. 270
Stress-relief annealing °C Cooling
630 - 650 Furnace
1st pre-heating °C 2nd and 3rd Hardening °C Quenching Tempering °C Hardness after Teperature HRC
up to approx. 400 in an air-circulating furnace 850 and 1050 1190 - 1230 Saltbath, at least 550 °C Oil ,Air at least twice 530-560 64 – 66