Sverker 21 Steel

Sverker 21 Steel

Steel name: Sverker 21
Diagram No.: 2755
Mat.No. (Wr.Nr.) designation: 1.2379
AISI/SAE designation: D2
Chemical composition in weight %: 1.55% C, 0.30% Si, 0.40% Mn, 11.30% Cr, 0.80% Mo, 0.80% V
Steel group: Cold work tool steels
Properties: Uddeholm Sverker 21 is a high-carbon, highchromium tool steel alloyed with molybdenum and vanadium.
Applications: Uddeholm Sverker 21 is recommended for tools requiring very high wear resistance, combined with moderate toughness (shockresistance). In addition to the applications listed in the product information brochure for Uddeholm Sverker 3, it is used when cutting thicker, harder materials; when forming with tools subjected to bending stresses and where high impact loads are involved. Uddeholm Sverker 21 can be supplied in various finishes, including the hot-rolled, pre-machined and fine machined condition. It is also available in the form of hollow bar and rings.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Preheating temperature: 650–750°C (1110– 1290°F). Austenitizing temperature: 990–1080°C (1810– 1980°F) but usually 1000–1040°C (1830–1905°F).
Quenching media: Oil (Only very simple geometries). Vacuum (high speed gas). Forced air/gas. Martempering bath or fluidized bed at 180–500°C (360–930°F), then cooling in air.
Note: Temper the tool as soon as its temperature reaches 50–70°C (120–160°F). Uddeholm Sverker 21 hardens through in all standard sizes.
Tempering: See the diagram.
Diagram note: The 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

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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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