S5 Tool Steel Technical Data
(Rounds Only)

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Chemical Analysis
Chemical Analysis
Carbon
.50/.65
Manganese
.60/1.00
Phosphorus
.030 Max.
Sulfur
.030 Max.
Silicon
.175/2.25
Chromium
.035 Max.
Vanadium
.035 Max.
Tungsten
-------
Molybdenum
-------
Cobalt
-------
Tempering Temp. (ºF):
Hardness Rc
As-quenched
65
300
63
400
61
500
60.5
600
59
700
57.5
800
53
900
51
1000
49
1100
47
1200
40.5
1300
33.5

Uses:

Shear blades, Veneer knife, punches, dies, pneumatic tools, chisels, beading tools, caulking tools.

 

Forging/Rolling:

Heat slowly to 1850° F – 1950° F and hold for uniformity. Do not forge or roll below 1650° F, cool slowly from the forging or rolling temperature.  Do not normalize.

 

Annealing:

Heat slowly to 1400° F, and hold for 1 hour per inch of thickness.  Cool slowly to 1000° F; air cool to room temperature.  Expect Brinell hardness 229 max.

 

Hardening:

Heat to 1600° F and hold for uniformity, not to exceed 1/2 hour per inch of thickness.  Quench into 150° F oil.

 

Tempering:

Temper immediately after quenching, before part has cooled to below 150° F.  Parts should be held a minimum of 2 hours per inch of greatest thickness.  A single temper is sufficient.  Tempering temperatures should be between 400° F – 650° F.  The above tempering table may be used as a guide.  However, since 1/2″ dia. specimens were used for this test, it may be found that heavier sections are several points lower.

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