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Latrobe Lescalloy® 4340 VAC-ARC ; 3.5" round High Strength Alloy Steel

Category Metal , Ferrous Metal , Alloy Steel , Low Alloy Steel , Carbon Steel , High Carbon Steel
Manufacturer Latrobe Steel
Trade Name Lescalloy®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe Lescalloy® 4340 VAC-ARC ; 3.5" round High Strength Alloy Steel.pdf
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Material Notes:
LESCALLOY 4340 VAC-ARC steel is a low alloy, nickel-chromium-molybdenum steel capable of being heat treated to high strength levels. The alloy has a good combination of ductility, toughness and strength along with high hardenability.Tempered At 204°CInformation Provided by Timken Latrobe Steel.Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
Physical Properties Metric English Comments
Density 7.83 g/cc
0.283 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 52 - 60
52 - 60
1/8" from quenched end
Tensile Strength, Ultimate 1900 MPa
276000 psi
204°C Temper Temperature
Tensile Strength, Yield 1530 MPa
222000 psi
204°C Temper Temperature
Elongation at Break 11 %
11 %
204°C Temper Temperature
Reduction of Area 35 %
35 %
204°C Temper Temperature
Thermal Properties Metric English Comments
CTE, linear 11.3 µm/m-°C

@Temperature 18.0 - 93.0 °C
6.28 µin/in-°F

@Temperature 64.4 - 199 °F
14.6 µm/m-°C

@Temperature 18.0 - 648 °C
8.11 µin/in-°F

@Temperature 64.4 - 1200 °F
Specific Heat Capacity 0.448 J/g-°C
0.107 BTU/lb-°F
Thermal Conductivity 37.48 W/m-K
260.1 BTU-in/hr-ft²-°F
Component Elements Properties Metric English Comments
Carbon, C 0.40 %
0.40 %
Chromium, Cr 0.80 %
0.80 %
Iron, Fe 95.7 %
95.7 %
Manganese, Mn 0.75 %
0.75 %
Molybdenum, Mo 0.25 %
0.25 %
Nickel, Ni 1.8 %
1.8 %
Silicon, Si 0.30 %
0.30 %
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