E M42 Steel

E M42 Steel

Steel name: E M42
Diagram No.: 1873
Mat.No. (Wr.Nr.) designation: 1.3247
EN designation: HS 2.9.1.8
AISI/SAE designation: M42
JIS designation: SKH59
AFNOR designation: Z110DKCWV9.8.4.2.1
SS designation: 2716
BS designation: BM42
Chemical composition in weight %: 1.08% C, 3.80% Cr, 9.40% Mo, 1.20% V, 1.50% W, 8.00% Co
Steel group: High speed tool steels
Properties: E M42 is a highly cobalt alloyed high speed steel to be used when the demand for hot hardness is of great importance. E M42 has a good machinability and a good wear resistance.
Applications: Twist drills, broaches, milling cutters, reamers, end mills, bandsaws.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Hardening with pre-heating in 2 steps at 450-500°C and 850-900°C and austenitising at a temperature suitable for chosen working hardness.
Tempering: 3 tempers at 560°C are recommended (maintain at least 1 hour each at temperature).
Diagram note: No data

Tempering Diagram

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Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

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