W350 ISOBLOC Steel

W350 ISOBLOC Steel

Steel name: W350 ISOBLOC
Diagram No.: 2278
Chemical composition in weight %: 0.38% C, 0.20% Si, 0.55% Mn, 5.00% Cr, 1.75% Mo, 0.55% V, N
Steel group: Hot work tool steels
Properties: A balanced alloy composition ensuring high toughness even in large tools and an improved thermal stability opts for an optimal hardness/ strength-toughness/ductility ratio (elongation after fracture and percentage reduction of area after fracture) tailor-fit to every application.
Applications: Hot work tool steels applied in hot forming processes such as die casting, forging or extrusion may be damaged on multiple and complex occasions. Damages may arise by collective stress factors combining high mechanical strengths, high temperatures and temperature gradients, whereas the individual stress factors dependent on process type and processing exert variably strong effects on the material.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 1020 °C (1010 °C) [1868 °F (1850 °F)]. Oil, hot quenching (500 – 550 °C [932 – 1022 °F]), air or vacuum with gas quenching. Holding time after temperature equalization: 15 to 30 minutes.
Tempering: Slow heating to tempering temperature immediately after hardening/time in furnace 1 hour for each 20 mm (0.79 inch) 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 (85 °F) above maximum secondary hardness. 2nd tempering to desired working hardness. The tempering chart shows average tempered hardness values. 3rd tempering for stress relieving at temperatures between 30 and 50 °C (85 – 120 °F) below the highest tempering temperature.
Diagram note: Hardening temperature: 1020 °C (1868 °F).

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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