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Latrobe LSSâ„¢ H11 Hot Work Tool Steel (ASTM H11)

Category Metal , Ferrous Metal , Alloy Steel , Tool Steel , Hot Work Steel
Manufacturer Latrobe Steel
Trade Name LSS™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe LSSâ„¢ H11 Hot Work Tool Steel (ASTM H11).pdf
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Material Notes:
TLS H11 hot work tool steel is a 5% chromium hot work steel that is characterized by excellent impact toughness. It contains less vanadium than the widely-used H13 hot work tool steel. This provides for the higher toughness, with some reduction in wear resistance and temper resistance. TLS H11 hot work tool steel is a deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment. It has good resistance to thermal fatigue cracking (heat checking) and excellent resistance to gross cracking and thermal shock when water cooled in service. TLS H11 hot work tool steel is recommended for hot tooling applications where maximum resistance to cracking is required. Such applications include hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling.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 7.80 g/cc
7.80 g/cc
Density 7.81 g/cc
0.282 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 52.5
52.5
Air Cooled from 982°C, 45 minutes
56
56
Air Cooled from 1010°C, 45 minutes
57
57
Air Cooled from 1038°C, 45 minutes
Modulus of Elasticity 207 GPa
30000 ksi
159 GPa

@Temperature 538 °C
23000 ksi

@Temperature 1000 °F
190 GPa

@Temperature 204 °C
27500 ksi

@Temperature 400 °F
Machinability 75 - 80 %
75 - 80 %
1% Carbon Steel
Charpy Impact 13.6 J
10.0 ft-lb
V-Notch; Air Cooled from 1010°C; 535°C Temper Temperature
27.1 J
20.0 ft-lb
V-Notch; Air Cooled from 1010°C; 650°C Temper Temperature
33.9 J
25.0 ft-lb
V-Notch; Air Cooled from 1010°C; 370 Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 11.82 µm/m-°C

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

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

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

@Temperature 69.8 - 1000 °F
Thermal Conductivity 17.58 W/m-K

@Temperature 27.0 °C
122.0 BTU-in/hr-ft²-°F

@Temperature 80.6 °F
23.84 W/m-K

@Temperature 204 °C
165.4 BTU-in/hr-ft²-°F

@Temperature 399 °F
26.78 W/m-K

@Temperature 1200 °C
185.9 BTU-in/hr-ft²-°F

@Temperature 2190 °F
Component Elements Properties Metric English Comments
Carbon, C 0.40 %
0.40 %
Chromium, Cr 5.0 %
5.0 %
Iron, Fe 91.5 %
91.5 %
Manganese, Mn 0.30 %
0.30 %
Molybdenum, Mo 1.3 %
1.3 %
Silicon, Si 1.0 %
1.0 %
Vanadium, V 0.50 %
0.50 %
Chemical Properties Metric English Comments
Critical Temperature 732 °C
1350 °F
Ar3
793 °C
1460 °F
Ar1
830 °C
1530 °F
Ac1
852 °C
1570 °F
Ac3
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