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Specialty Compounds RTP Company

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AISI Type M50 Tool Steel
Categories: Metal; Ferrous Metal; Carbon Steel; High Carbon Steel; Tool Steel

Material Notes: Excellent resistance to softening up to about 425°C (800°F). Good oxidation resistance and high compressive strength characteristic of high-speed tool steels.

Applications: bearings and other parts for missiles aircraft engines; applications requiring high wear resistance and strength up to 425°C (800°F).

Key Words: UNS T11350
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Physical PropertiesOriginal ValueComments
Density 0.288 lb/in³
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell C 60 - 65
 30
@Temperature 649 °C
 49
@Temperature 538 °C
 55
@Temperature 427 °C
 58.5
@Temperature 316 °C
 60.5
@Temperature 204 °C
 62
@Temperature 93.3 °C
 64
@Temperature -17.8 °C
Hardness, Vickers 310
@Temperature 649 °C
 500
@Temperature 538 °C
 600
@Temperature 427 °C
 680
@Temperature 316 °C
 710
@Temperature 204 °C
 750
@Temperature 93.3 °C
 800
@Temperature -17.8 °C
Fracture Toughness 12.0 - 18.0 ksi-in½cracks originating in case; case depth 0.30 to 0.35 in.
 
Thermal PropertiesOriginal ValueComments
Specific Heat Capacity 0.410 J/g-°C
Maximum Service Temperature, Air 900 °F
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 0.77 - 0.85 %
Chromium, Cr 3.75 - 4.25 %
Cobalt, Co <= 0.25 %
Copper, Cu <= 0.10 %
Iron, Fe >= 87.4 %As Balance
Manganese, Mn <= 0.35 %
Molybdenum, Mo 4.0 - 4.5 %
Nickel, Ni <= 0.15 %
Phosphorus, P <= 0.015 %
Silicon, Si <= 0.75 %
Sulfur, S <= 0.015 %
Tungsten, W <= 0.25 %
Vanadium, V 0.90 - 1.1 %

References for this datasheet.

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MSTM50A / 14103

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