Tool Steel
Tool Steel S6
Aging Procedure
Not applicable to this alloy.
Annealing Procedure
Anneal at 1500 F and slow cool in the furnace at a rate of 25 F per hour or less.
Applications
Used for impact resistant tools such as hammers, chisels, rivet sets.
Cold Workability
S6 may be cold worked in the annealed condition by conventional methods.
Forgeability
Forge at 2000 F down to 1650 F. Do not forge below 1600 F.
Formability
Forming characteristics in the annealed condition are good.
Hardening Procedure
See "Heat Treating" and "Tempering".
Heat Treatability
Slowly preheat to 1400 F and then raise the temperature to 1700 F. Hold parts at 1700 F for 10 to 30 minutes and then oil quench.
Hot Workability
See "Forging".
Machinability
This alloy has reasonably good machinability with a rating of 85% that of the W group water hardening simple alloy tool steels.
Principle Design Features
This alloy is one of the Shock Resisting tool steel type with a higher (2.25%) silicon content for improved hardenability.
Tempering Procedure
Tempering is done at 400 to 600 F for Rockwell C of 56 - 54.
Weldability
The alloy may be welded, but the high silicon content may require special precautions. Consult the alloy supplier.
Known Forms
Disc
Drill Rod
Flat Bar
Plate
Precision Ground Bar
Ring
Round Bar
Sheet
Square Bar
Additional Data
Specifications
A681 (S-6),T41906Chemical Elements
| Carbon | 0.4 - 0.5 |
| Chromium | 1.2 - 1.5 |
| Iron | Balance |
| Manganese | 1.2 - 1.5 |
| Molybdenum | 0.3 - 0.5 |
| Phosphorus | 0.03 max |
| Silicon | 2 - 2.5 |
| Sulphur | 0.03 max |
| Vanadium | 0.2 - 0.4 |
Physical Properties
Density: 0.283lb/in³
Melting Point: 2610°F
Specific Gravity: 7.84
Mechanical Properties
Modulus of Elasticity – Tension: 29MSI