Z-M4 PM Steel

Z-M4 PM Steel

Steel name: Z-M4 PM
Diagram No.: 2861
Chemical composition in weight %: 1.42% C, 0.55% Si, 0.30% Mn, 4.00% Cr, 5.25% Mo, 4.00% V, 5.50% W
Steel group: PM tool steels
Properties: Z-M4 PM is a tungsten molybdenum-vanadium high speed steel produced by powder metallurgy methods. It offers an excellent combination of wear resistance, red hardness, and toughness properties which can provide superior tool performance in a broad range of cutting tool and cold work tooling applications. It is an excellent upgrade over standard M2 high speed and D2 tool steel. The particle metallurgy processing also provides improved machinability, grindability, heat treat response, and dimensional stability when compared to similar grades produced by conventional methods.
Applications: Cutting tools, punches and dies, fine blanking tools, shears, rotary shears, PM compacting tools, cold extrusion dies, broaches, reamers, milling tools.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Methods include use of high pressure gas (minimum 5 bar preferred), salt bath, or oil. Quench rate through the temperature range of 1900°F (1040°C) to 1300°F (700°C) is critical to the development of optimum structure and properties. Part temperature can then be equalized at 1000- 1100°F (540-595°C) after which cooling can continue to below 150°F (66°C) or “hand warm”. Step quenching in this manner will help to minimize distortion in larger section sizes.
Tempering: Tempering should be performed immediately after quenching. Temperatures in the range of 1000°F (540°C) to 1100°F (595°C) are generally used depending on the hardness required. Heat uniformly to the selected temperature and soak for 2 hours. Double tempering is absolutely necessary while triple tempering is highly recommended when hardening at 2100°F (1150°F) and over. Tempering temperatures of less than 1000°F (540°C) should not be used, and care must be taken to cool parts fully to room temperature between each temper.
Diagram note: No data

Tempering Diagram

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Disclaimer: The material data is a central depository of information based on global actual tests and calculated software data that is available to the public for a fee. The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.