Polmax Steel

Polmax Steel

Steel name: Polmax
Diagram No.: 2763
Chemical composition in weight %: 0.38% C, 0.90% Si, 0.50% Mn, 13.60% Cr, 0.30% V
Steel group: Plastic mould steels
Properties: The rapid development in the high-tech area is putt ing higher and higher demands on the tool steel. Surface finishes, which have not been possible to achieve with ordinary tool steels, are required. For these extreme requirements Uddeholm Polmax is the right choice. For Uddeholm Polmax methods like ESR (Electro Slag Remelting) and VAR (Vacuum Arc Remelting) are used in order to reduce inclusion levels to minimum amounts.
Applications: Examples on applications where extreme surface finishes are required: Lens moulds, Moulds for medical applications, Moulds for optical applications, Moulds for analysis phials.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Preheating temperature: 600–850°C (1110– 1560°F). Austenitizing temperature: 1000–1050°C (1830– 1920°F) but usually 1020–1030°C (1870–1885°F).
Quenching media: Fluidized bed or salt bath at 250–550°C (480–1020°F), then cool in air blast. Vacuum with sufficient positive pressure. High speed gas/circulating atmosphere.
Tempering: Choose the tempering temperature according to the hardness required by reference to the tempering graph. Temper twice with intermediate cooling to room temperature. Lowest tempering temperature 180°C (360°F). Holding time at temperature minimum 2 hours.
Diagram note: No data.

Tempering Diagram

Price: 20.00 US $
Buy Online Tempering Diagram

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

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.