W302 ISOBLOC Steel

W302 ISOBLOC Steel

Steel name: W302 ISOBLOC
Diagram No.: 2273
Mat.No. (Wr.Nr.) designation: 1.2343, 1.2344
EN designation: X40CrMoV5-1
AISI/SAE designation: H13
JIS designation: SKD61
Chemical composition in weight %: 0.39% C, 0.90% Si, 0.40% Mn, 5.20% Cr, 1.40% Mo, 0.95% V
Steel group: Hot work tool steels
Properties: Hot work tool steel featuring excellent hot tensile properties, high hot wear resistance, adequate toughness and heat checking resistance; admits water cooling.
Applications: H13 is particularly suitable for aluminium , zinc and magnesium die casting tools where resistance to heat checking is of prime importance. Other uses include extrusion dies and mandrels, hot piercing tools, hot blanking and forging dies, shear blades, hot punches and die inserts.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 1020 - 1080 C. Oil, salt bath 932-1022°F (500 - 550 °C), air, vacuum Holding time after temperature equalization: 15 to 30 minutes. Die casting equipment: 1868 - 1886°F (1020 - 1030°C) After hardening, tempering to the desired working hardness, see tempering chart.
Tempering: Slow heating to tempering temperature immediately after hardening / time in furnace 1 hour for each 0,787 inch (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. 86°F (30°C) 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 86 to 122 °F (30 to 50°C) below highest tempering temperature.
Diagram note: Hardening temperature: 1050°C (1922°F). Specimen size: square 50 mm.

Tempering Diagram

Price: 20.00 US $
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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

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