S700 Steel

S700 Steel

Steel name: S700
Diagram No.: 2270
Mat.No. (Wr.Nr.) designation: ~1.3207
DIN designation: HS10-4-3-10
AFNOR designation: Z130WKCDV10-10-04-04-03
JIS designation: SKH57
Chemical composition in weight %: 1.26% C, 0.25% Si, 0.30% Mn, 4.00% Cr, 3.60% Mo, 3.20% V, 9.30% W, 10.00% Co
Steel group: High speed steels
Properties: High grade, tungsten-molybdenum high speed steel, all-purpose grade, with optimum cutting properties, wear resistance and red hardness.
Applications: Turning and milling tools for roughing and finishing work, woodworking tools, highly stressed cold work tools, tool bits.
Reference: Not shown in this demo version.

Tempering Diagram
Hardening: 1200 to 1240°C (2192 to 2264°F) Oil, air, salt bath (500 - 550°C (932 - 1022°F), gas. Upper temperature range for parts of simple shape, lower for parts of complex shape. For coldworking tools also lower temperatures are of inportance for higher toughness. Soaking time after heating up the whole section of a workpiece 80 seconds minimum is required for dissolving sufficient carbides. Maximum soaking time 150 seconds to avoid detriments by oversoaking. In practice instead of soaking time the time of exposure from placing the workpiece into the salth bath after preheating until removing (including the stages of heating to the specified surface temperature and of heating to the temperature throughout the whole section) is used. “see immersion time diagrams”. Vacuum hardening is also possible. The time in the vacuum furnace depends on the relevant workpiece size and furnace parameters.
Tempering: Slow heating to tempering temperature immediately after hardening/time in furnace: 1 hour for every 20 mm of workpiece thickness, but not less than 2 hours/ air cooling (minimum holding time: 1 hour). 1st tempering and 2nd tempering to desired working hardness. Average obtainable hardness values are shown in the tempering chart. 3rd tempering for stress relieving, 30 - 50°C (86-122°F) below highest tempering temperature. Obtainable hardness after tempering: 65 - 67 HRC.
Diagram note: Hardening temperature: 1210°C (2210°F). Specimen size: square 20 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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