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Latrobe Double Six™ ASTM M2 High Speed Steel

Category Metal , Ferrous Metal , Alloy Steel , Carbon Steel , High Carbon Steel , Tool Steel
Manufacturer Latrobe Steel
Trade Name Double Six™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe Double Six™ ASTM M2 High Speed Steel.pdf
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Material Notes:
DOUBLE SIX (M2) is a tungsten-molybdenum high speed steel with a well balanced composition suitable for a wide variety of applications. World wide, the M2 type is by far the most popular high speed steel having replaced T1 high speed in most applications because of its superior properties and relative economy. Typical applications for Double Six high speed steel include twist drills, taps, milling cutters, reamers, broaches, saws, and knives.Information Provided by Timken Latrobe Steel.Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
Physical Properties Metric English Comments
Specific Gravity 8.14 g/cc
8.14 g/cc
Density 8.14 g/cc
0.294 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 64.0
64.0
Oil Quenched from 1121°C
64.5
64.5
Oil Quenched from 1232°C
66
66
Oil Quenched from 1177°C
Modulus of Elasticity 207 GPa
30000 ksi
Machinability 50 - 60 %
50 - 60 %
1% Carbon Steel
Izod Impact Unnotched 51.5 J
38.0 ft-lb
Oil Quenched at 1232°C; 482°C Temper Temperature
55.6 J
41.0 ft-lb
Oil Quenched at 1232°C; 545°C Temper Temperature
56.9 J
42.0 ft-lb
Oil Quenched at 1232°C; 622°C Temper Temperature
56.9 J
42.0 ft-lb
Oil Quenched at 1177°C; 482°C Temper Temperature
66.4 J
49.0 ft-lb
Oil Quenched at 1177°C; 622°C Temper Temperature
96.3 J
71.0 ft-lb
Oil Quenched at 1177°C; 566°C Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 10.95 µm/m-°C

@Temperature 21.0 - 204 °C
6.083 µin/in-°F

@Temperature 69.8 - 399 °F
12.54 µm/m-°C

@Temperature 21.0 - 358 °C
6.967 µin/in-°F

@Temperature 69.8 - 676 °F
Component Elements Properties Metric English Comments
Carbon, C 0.85 %
0.85 %
Chromium, Cr 4.15 %
4.15 %
Iron, Fe 81.42 %
81.42 %
Manganese, Mn 0.28 %
0.28 %
Molybdenum, Mo 5.0 %
5.0 %
Silicon, Si 0.30 %
0.30 %
Tungsten, W 6.15 %
6.15 %
Vanadium, V 1.85 %
1.85 %
Chemical Properties Metric English Comments
Critical Temperature 749 °C
1380 °F
Ar3
777 °C
1430 °F
Ar1
832 °C
1530 °F
Ac1
877 °C
1610 °F
Ac3
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