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Latrobe Graph-Mo® Cold Work Tool Steel (ASTM O6)

Category Metal , Ferrous Metal , Alloy Steel , Carbon Steel , High Carbon Steel , Tool Steel , Cold Work Steel , Oil-Hardening Steel
Manufacturer Latrobe Steel
Trade Name Graph-Mo®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe Graph-Mo® Cold Work Tool Steel (ASTM O6).pdf
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Material Notes:
Graph-Mo tool steel is an oil-hardening, graphitic tool steel with outstanding resistance to metal-to-metal sliding wear and galling. The steel contains a uniform dispersion of graphite particles which impart excellent machinability and non-seizing characteristics. The graphite particles make the steel self-lubricating in dry environments, and help to retain oil in lubricated environments. Graph-Mo tool steel can be hardened to over 60 Rockwell C from a relatively low hardening temperature, which minimizes size change and distortion during heat treatment. Typical applications include thread gauges, master gages, cams, bushings, sleeves, meat granulator plates, arbors, forming rolls, shear blades, punches, dies, bar feed guides and other machine tool parts.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 7.70 g/cc
7.70 g/cc
Density 7.70 g/cc
0.278 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 62
62
Air Cooled from 774°C, 30 minutes
64
64
Air Cooled from 871°C, 30 minutes
65.5
65.5
Air Cooled from 802°C, 30 minutes
Modulus of Elasticity 207 GPa
30000 ksi
Machinability 130 %
130 %
1% Carbon Steel
Izod Impact Unnotched 27.1 J
20.0 ft-lb
Oil Quenched from 788°C; 250°C Temper Temperature
129 J
95.0 ft-lb
Oil Quenched from 788°C; 538°C Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 11.15 µm/m-°C

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

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

@Temperature 21.0 - 538 °C
7.189 µin/in-°F

@Temperature 69.8 - 1000 °F
Component Elements Properties Metric English Comments
Carbon, C 1.45 %
1.45 %
Iron, Fe 96.4 %
96.4 %
Manganese, Mn 1.0 %
1.0 %
Molybdenum, Mo 0.25 %
0.25 %
Silicon, Si 0.90 %
0.90 %
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