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Latrobe LSSâ„¢ D3 Tool Steel (ASTM D3)

Category Metal , Ferrous Metal , Alloy Steel , Carbon Steel , High Carbon Steel , Tool Steel , Oil-Hardening Steel
Manufacturer Latrobe Steel
Trade Name LSS™
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe LSSâ„¢ D3 Tool Steel (ASTM D3).pdf
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Material Notes:
TLS D3 tool steel is a high-carbon, high-chromium, oil-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. TLS D3 exhibits excellent stability in heat treatment, holding size almost as well as the air-hardening, high-carbon, high-chromium die steels such as D2. Typical applications for TLS D3 tool steel include forming rolls, drawing dies, forming, powder compaction tooling, and lamination dies.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 7.87 g/cc
7.87 g/cc
Density 7.86 g/cc
0.284 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 63.5
63.5
Air Cooled from 913°C, 45 minutes
64
64
Air Cooled from 982°C, 30 minutes
64.5
64.5
Air Cooled from 927°C, 30 minutes
Modulus of Elasticity 207 GPa
30000 ksi
Machinability 45 - 50 %
45 - 50 %
1% Carbon Steel
Izod Impact Unnotched 20.3 J
15.0 ft-lb
Oil Quenched from 954°C; As Quenched
54.2 J
40.0 ft-lb
Oil Quenched from 954°C; 593°C Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 11.84 µm/m-°C

@Temperature 38.0 - 260 °C
6.578 µin/in-°F

@Temperature 100 - 500 °F
13.81 µm/m-°C

@Temperature 38.0 - 538 °C
7.672 µin/in-°F

@Temperature 100 - 1000 °F
Component Elements Properties Metric English Comments
Carbon, C 2.15 %
2.15 %
Chromium, Cr 12.25 %
12.25 %
Iron, Fe 84.55 %
84.55 %
Manganese, Mn 0.40 %
0.40 %
Silicon, Si 0.40 %
0.40 %
Vanadium, V 0.25 %
0.25 %
Chemical Properties Metric English Comments
Critical Temperature 743 °C
1370 °F
Ar3
766 °C
1410 °F
Ar1
782 °C
1440 °F
Ac1
832 °C
1530 °F
Ac3
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