Mirrax ESR Steel

Mirrax ESR Steel

Steel name: Mirrax ESR
Diagram No.: 2762
AISI/SAE designation: 420 modified
Chemical composition in weight %: 0.25% C, 0.35% Si, 0.55% Mn, 13.30% Cr, 0.35% Mo, 1.35% Ni, 0.35% V
Steel group: Plastic mould steels
Properties: Demands placed on plastic mould tooling are increasing. Such conditions require mould steel that possess a unique combination of toughness, corrosion resistance and the ability to reach uniform hardness levels throughout large cross sections. Uddeholm Mirrax ESR has proven to be the right choice for these applications.
Applications: Although Uddeholm Mirrax ESR is recommended for all types of moulds, its special properties make it particularly suitable for moulds.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: No data
Quenching media: Vacuum, cooling in gas with sufficient overpressure. Fluidized bed or salt bath at 350–500°C (660–930°F) then cool in air blast. High speed gas/circulating atmosphere In order to obtain optimum properties, the cooling rate should be as fast as possible while maintaining an acceptable level of distortion. When heating in a vacuum furnace, min. 4–5 bar overpressure is recommended.
Tempering: Choose the tempering temperature according to the hardness required by reference to the tempering graph. Temper minimum twice with intermediate cooling to room temperature. Lowest tempering temperature 250°C (480°F). Holding time at temperature minimum 2 hours.
Diagram note: The tempering curves are approximate. Bellow tempering curves are obtained after heat treatment of samples with a size of 15 x 15 x 40 mm, cooling in forced air. Lower hardness can be expected after heat treatment of tools and dies due to factors like actual tool size and heat treatment parameters.

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.