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"Gateway
O-1 " |
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| Cold
Work |
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| Tool
Steel |
Gateway
O-1 |
is
a general purpose, non-deforming oil hardening tool steel for |
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applications where maximum accuracy
is required during the hardening of the end product. |
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Gateway
O-1has deep hardening properties and fine grain structure with unusual |
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toughness. Meets ASTM A-681. |
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| Typical
Chemistry |
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Carbon |
.85/1.00 |
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Silicon |
.10/.50 |
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Manganese |
1.00/1.40 |
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Chromium |
.40/.70 |
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Phosphorus |
.03 max |
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Tungsten |
.40/.60 |
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Sulfur |
.03 max |
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Vanadium |
.30 max |
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| Applications |
Gateway O-1 applications include
gauges, stamps, jigs, cutters, templates, cams, guides, |
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levers, saws, knives, straight
edges, fixtures, machine parts, punches, blanking dies, molding |
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dies, swaging dies, screw dies and
trim dies. |
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| Annealing |
Heat uniformly to 1400/1450 F and
hold two hours per inch of cross section.
Cool in the furnace at |
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rate not exceeding 50 F per hour down to a temperature of 1000 F, after which
a faster rate |
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can be allowed. |
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| Heat
Treating |
Preheat thoroughly to 1200/1250 F,
then heat to 1450/1500 F depending on the section size. |
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Hold until uniformly heated
through. Use high side of hardening
range for thicker sections. |
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Quench
in warm thin quenching oil to about 125 F.
To prevent soft spots, the tools should be |
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rapidly agitated in oil when a
circulating oil bath is not available.
The material should be tempered |
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as soon as it has cooled to 125 F. |
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| Tempering |
Temper immediately to desired
hardness. For most applications, a
tempering temperature of |
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400/450 F is employed. However, for cutting tools requiring
higher hardness, low temperatures |
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of
300/350 F are suitable. Temper a
minimum of two hours for sections under two inches and a |
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minimum of one hour per inch of
thickness over two inches. |
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The
following table shows the hardness values obtained at various tempering |
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temperatures on a two inch cube
hardened from 1475 F and tempered two hours. |
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Tempering Temperatures
(F) |
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Rockwell Hardness (HRC) |
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as quenched |
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63/65 |
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300 |
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62/64 |
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400 |
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60/62 |
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500 |
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57/59 |
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600 |
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55/57 |
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Note: |
Variations in section size, heating
rate, soak time, quench rate and tempering will |
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cause
deviations from the above values.
Gateway Metals should be consulted for specific |
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applications. |
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