W300 Steel

W300 Steel

Steel name: W300
Diagram No.: 2271
Mat.No. (Wr.Nr.) designation: ~1.2343
DIN designation: X38CrMoV5-1
AISI/SAE designation: H11
JIS designation: SKD6
Chemical composition in weight %: 0.38% C, 1.10% Si, 0.40% Mn, 5.00% Cr, 1.30% Mo, 0.40% V
Steel group: Hot work tool steels
Properties: Hot work tool steel offering high impact strength, excellent hot tensile properties, and outstanding air hardenability, admits water cooling.
Applications: Heavy duty hot work tools and dies, mainly for light alloy processing: mandrels, dies, and containers for metal tube and rod extrusion; hot extrusion equipment; tools and dies for the manufacture of hollow bodies, screws, rivets, nuts and bolts. Die casting equipment, forming dies, die inserts, hot shear blades, and plastic moulding dies.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 1000 to 1040°C (1832 to 1904°F) Oil, salt bath (500 - 550°C / 932-1022°F), air, vacuum Holding time after temperature equalization: 15 to 30 minutes. Obtainable hardness: 52 - 56 HRC in oil or salt bath, 50 - 54 HRC in air or vacuum
Tempering: Slow heating to tempering temperature immediately after hardening / time in furnace 1 hour for each 20 mm of workpiece thickness but at least 2 hours / cooling in air. It is recommended to temper at least twice. A third tempering cycle for the purpose of stress relieving may be advantageous 1st tempering approx. 30°C (86°F) above maximum secondary hardness. 2nd tempering to desired working hardness. The tempering chart shows average tempered hardness values. 3rd for stress relieving at a temperature 30 to 50°C (86 to 122°F) below highest tempering temperature.
Diagram note: Hardening temperature: 1020°C (1868°F). Specimen size: square 50 mm.

Tempering Diagram

Price: 20.00 US $
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