Detailed Introduction
Model :M50
Application : high speed steel
Content : Equivalent Steel with exact or nearest equivalents
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
V |
Mo |
|
M50 |
0.78-0.88 |
0.15-0.45 |
≤0.03 |
≤0.03 |
0.20-0.60 |
3.75-4.50 |
0.80-1.25 |
3.90-4.75 |
M50 is an American grade, which is the world's top steel for the main bearing of aero engines. The corresponding domestic steel grade is S8Cr4Mo4V.
International Standards
|
ITA |
USA |
GERMANY |
FRANCE |
UK |
CHINA |
|
X80MoCrV4 4 |
M50 / T11350 |
1.3551 |
Y80DCV42 16 |
BM50 |
Cr4Mo4V |
Physical properties of HSS UNS T111350 | M50 Tool Steel
· Density: 8.9kg/m3
· Thermal conductivity:
· Forging ratio: 5:1 Minimum
Mechanical properties of Alloy Steel UNS T111350 | M50 High Speed Tool Steel
Hardness： Annealing: 248 HB max, Q+T: 61 HRc Min, different hardness according different Tempering temperature.
Heat treatment of AISI M50 tool steel
· Annealing: Annealing temperature/℃: 750~790; After the annealing, degree of hardness ≤HBS: 255
· Quenching: Hardening temperature/℃: 1104, Quenching in Salt bath furnace
· Tempering: Commonly used drawing temperature/℃:5382; After tempering hardness HRC : 61 HRc Min
· Normalizing：at Normalizing temperature, then cool in furnace
Forged steel properties of M50 high tool steel
For forging UNS T111350 | M50 steel, Slowly Pre-heat, at temperature/℃: 900~1100 Forged
|
Heat-Treating Requirements
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The austenitizing temperatures are stipulated for the response to hardening test only. Other combinations of austenitizing and tempering ,temperatures may be used for particular applications |
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|
Class
|
Preheat Temperature °F (°C)
|
Austenitizing Temperature, °F (°C)A
|
Tempering Temperature, °F (°C)B
Salt Bath
|
Tempering Temperature, °F (°C)B Controlled Atmosphere Furnace |
Minimum Hardness, Rockwell C
|
|
M1 |
1350–1550 (732–843)
|
2185 (1196)
|
2205 (1207)
|
1025 (552)
|
64
|
|
Macroetch Standards Maximum Allowable RatingA
|
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|
Bar Size, in. (mm) |
T Classifification SteelsB |
M Classifification SteelsC |
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|
|
Porosity |
Ingot Pattern
|
Porosity |
Ingot Pattern |
|
UP TO2(50.8)incl |
3 1⁄2 |
5 |
3 |
5 |
|
Over 2 to 3 (50.8 to 76),incl |
4 |
5 |
3 1/2 |
5 |
|
Over 3to 4 (76to 102),incl |
4 1/2 |
5 |
4 |
5 |
|
Over 4 to 5(102 to 127),incl |
5 |
5 |
4
|
5 |
|
Over 5 to 6(127 to 152),incl |
5 |
5 |
4 1/2 |
5 |
|
Over 6 (152) |
As negotiated between supplier and purchaser |
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Solar Special Steel International Limited
Contact Person :Wendy
Telephone:+86 18688633122 whatsapp&wechat
Skype: .cid.8920082fecfa0b5c
Email:ss@solarsteel.cn
