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Latrobe Lescalloy® HP 9-4-30 VAC-ARC ; 5.75 in RCS Billet Size High Strength Alloy Steel

Category Metal , Ferrous Metal , Alloy Steel , Low Alloy Steel , Carbon Steel , Medium Carbon Steel
Manufacturer Latrobe Steel
Trade Name Lescalloy®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Latrobe Lescalloy® HP 9-4-30 VAC-ARC ; 5.75 in RCS Billet Size High Strength Alloy Steel.pdf
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Material Notes:
LESCALLOY HP 9-4-30 VAC-ARC steel is a low alloy, high strength steel with a high nickel and cobalt content to promote toughness. The alloy has been designed to have high hardenability, good weldability and excellent fracture toughness. It is typically used in the 220/240,000 psi (1517/1655 MPa) tensile strength range. Lescalloy HP 9-4-30 VAC-ARC steel is produced by the consumable electrode vacuum arc remelting process to provide optimum cleanliness and preferred ingot structure.Normalized at 927°C; Austenitized at 829°C for .5 hourInformation Provided by Timken Latrobe Steel.Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
Physical Properties Metric English Comments
Density 7.75 g/cc
0.280 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 51
51
1" from quench end; Jominy End Quench Hardenability
51
51
1/2" from quenched end; Jominy End Quench Hardenability
52
52
1/8" from quenched end; Jominy End Quench Hardenability
Tensile Strength, Ultimate 1590 - 1600 MPa
230000 - 232000 psi
Tensile Strength, Yield 1310 - 1340 MPa

@Strain 0.200 %
190000 - 194000 psi

@Strain 0.200 %
Elongation at Break 15 %
15 %
Reduction of Area 51.7 - 52.5 %
51.7 - 52.5 %
Fracture Toughness 143 MPa-m½
130 ksi-in½
Charpy Impact 27.0 J

@Temperature -54.0 °C
19.9 ft-lb

@Temperature -65.2 °F
V-notch
Thermal Properties Metric English Comments
CTE, linear 11.3 µm/m-°C

@Temperature 20.0 - 427 °C
6.28 µin/in-°F

@Temperature 68.0 - 801 °F
Component Elements Properties Metric English Comments
Carbon, C 0.30 %
0.30 %
Chromium, Cr 1.0 %
1.0 %
Cobalt, Co 4.5 %
4.5 %
Iron, Fe 85.2 %
85.2 %
Manganese, Mn 0.30 %
0.30 %
Molybdenum, Mo 1.0 %
1.0 %
Nickel, Ni 7.5 %
7.5 %
Silicon, Si 0.10 %
0.10 %
Vanadium, V 0.10 %
0.10 %
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