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Latrobe Viscount 44® Prehardened Tool Steel (ASTM H13S)

Category Metal , Ferrous Metal , Alloy Steel , Tool Steel
Manufacturer Latrobe Steel
Trade Name Viscount
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe Viscount 44® Prehardened Tool Steel (ASTM H13S).pdf
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Material Notes:
Viscount 44 is a free-machining, prehardened, H13-type hot work tool steel. It is produced using special melting, forging, and heat treating processes which provide the optimum in control and reproducibility of the performance characteristics of the steel. The sulfur makes the steel readily machinable at the supplied hardness range of 42 to 46 Rockwell C, and the composition provides the strength and wear resistance expected of an H13-type steel. At the supplied hardness, the steel exhibits a yield strength of approximately 156 to 175 ksi (1076 to 1207 MPa), and an ultimate tensile strength of approximately 195 to 219 ksi (1345 to 1510 MPa).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 7.75 g/cc
7.75 g/cc
Density 7.75 g/cc
0.280 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 35
35
649°C Temper Temperature
44
44
593°C Temper Temperature
Modulus of Elasticity 207 GPa
30000 ksi
159 GPa

@Temperature 538 °C
23000 ksi

@Temperature 1000 °F
186 GPa

@Temperature 204 °C
27000 ksi

@Temperature 400 °F
Machinability 35 - 40 %
35 - 40 %
1% Carbon Steel
Charpy Impact 8.13 J
6.00 ft-lb
V-Notch; 593°C Temper Temperature
13.6 J
10.0 ft-lb
V-Notch; 649°C Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 11.3 µm/m-°C

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

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

@Temperature 21.0 - 427 °C
7.28 µin/in-°F

@Temperature 69.8 - 801 °F
Thermal Conductivity 17.6 W/m-K

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

@Temperature 80.6 °F
23.4 W/m-K

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

@Temperature 399 °F
25.1 W/m-K

@Temperature 427 °C
174 BTU-in/hr-ft²-°F

@Temperature 801 °F
Component Elements Properties Metric English Comments
Carbon, C 0.40 %
0.40 %
Chromium, Cr 5.25 %
5.25 %
Iron, Fe 90.9 %
90.9 %
Molybdenum, Mo 1.35 %
1.35 %
Silicon, Si 1.0 %
1.0 %
Sulfur, S 0.10 %
0.10 %
Vanadium, V 1.0 %
1.0 %
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