AISI 01
AISI 01
01 is an oil-hardening, non-deforming tool steel which can be hardened at relatively low temperatures. Tools and dies made from 01 will have good wearing qualities since the tungsten and higher chromium content gives improved wear resistance over the straight manganese grades.
TYPICAL APPLICATIONS
Blanking dies, bushings, forming dies, master tools, forming rolls, gauges, trim dies.
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TYPICAL ANALYSIS
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Type 01 (T31501)
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Carbon
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.85 – 1.00
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Manganese
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1.00 – 1.40
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Silicon
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.50 MAX
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Tungsten
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.40 - .60
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Chromium
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.40 - .60
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Vanadium
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.30 MAX
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Nickel
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.30 MAX
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FORGING
Start forging at
Do not forge below
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1800-1950° F (982-1066° C)
1550° F (843° C)
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NORMALIZING
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1600° F (871° C)
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ANNEALING
Temperature
Rate of cooling, max. per hour
Typical annealed hardness, Brinell
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1400-1450° F (760-788° C)
40° F (22° C)
183-212
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HARDENING
Rate of heating
Preheat temperature
Hardening temperature
Time at temperature, minutes
Quenching medium
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Slowly
1200° F (649° C)
1450-1500° F (788-816° C)
10-30
O
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TEMPERING
Tempering temperature
Approx. tempered hardness, Rockwell C
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350-500° F (177-260° C)
57-62
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WEAR RESISTANCE
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Medium
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TOUGHNESS
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Medium
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RESISTANCE TO SOFTENING EFFECT OF ELEVATED TEMPERATURE
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Low
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DEPTH OF HARDENING
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Medium
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MACHINABILITY
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High
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GRINDABILITY
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High
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DISTORTION IN HEAT TREATING
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Low
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SAFETY IN HARDENING
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Medium to High
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RESISTANCE TO DECARBURIZATION
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High
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