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T-15

T-15 High Speed Tool Steel

T-15 is an air or oil hardening tool steel that has exceptional wear resistance. It resists softening at high operating temperatures.

Analysis:


C

CO

CR

MN

MO

NI

P

S

SI

V

W
1.50 – 1.604.75 – 5.253.75 – 5.000.15 – 0.401.00 Max.0.15 – 0.404.50 – 5.2511.75 – 13.00

Size Availability:

Flats • Hollowbar • Metric • Non-Standard • Rounds • Squares • Standard

Applications:

Boring ToolsBroachesCold Heading Punches
Header Die InsertsHobsLathe Tools
Milling CuttersPlaner ToolsReamers
Shaper ToolsShaving ToolsTaps

Designations:

AISI T15 High Speed Tool Steel-US
DIN 1.3202-Germany
UNI 130505 KU-Italy
B.S. BT 15-US
ASTM A600-US
FED QQ-T-590-US
UNS T12001-US
UNS T12015-US

TreatmentTemperature RangeCooling/QuenchingNotes
Forging1700-2100° FSlow.Cool slowly in dry sand or in other insulating media.
Annealing1600-1650° FCool slowly at a rate of 35° F per hour to 1000° F.For best results, insulating media is desirable. Hold at temperature for 2 hours.
Stress Relieving1100-1300° FCool slowlyStress relieve after rough machining
Preheating1450-1500° FPreheat time in furnace is ¾ Hr. per inch of thickness. Heating up to temperature as slow as possible.
Hardening2250-2300° F (furnace)

2220-2275° F (salt bath)

Quench in air or warm oil. To minimize quenching strains, quench in salt at 1000° FFor maximum wear resistance, harden at 2300° F. For maximum toughness and high hardness, harden at 2200° F.
Tempering(See Chart)Double tempering is recommended. The usual tempering time is 2+2 hours. Recommended temperature is 1000-1075° F for cutting tools. 1100-1200° F for shock tools
Data is typical and should not be construed as actual values for any category.
Applications and technical information require engineers and tool designers to exercise independent judgement.

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