Products

ALLOY STEEL

  

Shape :
Grade :

Standards

EN24

DIN 40NiCrMo84

AISI 4340

 
C 0.36/0.44 Si 0.10/0.35MN 0.45/0.70S 0.040 maxP 0.035 max Cr 1.00/1.40 Mo 0.20/0.35 NI 1.30/1.70
Virat Special Steels EN24

Virat Special Steels is the biggest & leading Supplier & Stockiest of EN24 in India.
EN24steel is high tensile alloy steel famed for its wear resistance properties and in addition where high strength properties are required.
This Grade is used in components akin to gears, shafts, studs and bolts, its hardness is within the range 248/302 HB. It may be further surface-hardened to create add-ons with more advantageous wear resistance by means of induction or nitriding processing.

Steel Properties

Standard hiqh-speed steel qrade. Itswell-balanced alloy composition forms the basis of its high_touqhn-essand good clllting edge retention, rendenng it $uitable for a large variety of appllcatons.

Physical Properties
Thermal Conductivity at °C 20 350 700
W/(m*K) 40.5 32.5 25.5
Application

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
650-700 slowly max. 280
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 780 and 1000 1190 - 1230 Saltbath, at least 520 °C Oil ,Air at least twice 530-560 64 – 66