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DeCarb
Free Tool Steel Bar
L-6
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Description
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An
tough, oil-hardening tool steel possesing a fine-grained structure and desireable shock resistance. L6 is also assosiated with high strength and good non-deforming characteristics.
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| Typical
Applications |
Forming Rolls, Spindles, Punches, Trim Dies, Blanking Dies, Embossing Dies, Forming Dies, and Shear Blades. |
| Chemical Composition |
| Typical Analysis |
Type L-6 (UNS T61206) |
| Carbon (C) : |
.65/.75 |
| Manganese (Mn) : |
.25/.80 |
| Silicon (Si) : |
.50 max |
| Molybdenum (Mo) : |
.50 max |
| Chromium (Cr) : |
.60/1.20 |
| Vanadium (V) : |
.30 max |
| Nickel (Ni) : |
1.25/2.00 |
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| FORGING (a) |
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Start forging at
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1800-2000°F (982-1093°C) |
Do not forge below
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1550°F (843°C) |
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| NORMALIZING (b) |
1600°F (871°C) |
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| ANNEALING (c) |
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Temperature
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1400-1450°F (760-788°C) |
Rate of cooling, max per hour
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40°F (22°C) |
Typical annealed hardness, Brinell
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183 - 255 |
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HARDENING |
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Rate of heating
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Slowly |
Preheat temperature
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1400-1450°F (760-788°C) |
Hardening temperature
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1450-1550°F (788-843°C) |
Time at temperature
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10-30(j) |
Quenching medium
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O(l) |
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TEMPERING |
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Tempering Temperature
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350-1000°F (177-538°C) |
Approx. tempered hardness, Rockwell C
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45-62 |
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| WEAR RESISTANCE |
Medium |
| TOUGHNESS |
Very High |
| RESISTANCE TO SOFTENING EFFECT OF ELEVATED TEMPERATURE |
Low |
| DEPTH OF HARDENING |
Medium |
| MACHINABILITY |
Medium |
| GRINDABILITY |
High |
| DISTORTION IN HEAT TREATING |
Low |
| SAFETY IN HARDENING |
Medium |
| RESISTANCE TO DECARBURIZATION |
High |
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