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Specification
AISI 4340 ultra high strength tensile steel round bar for aerospace application
Standards:ASTM,JIS,GB,EN(DIN,BS,NF) Or Per as clients’ requires.
Product Basic Information:
Size Range | |||
Round Bar |
Diameter(mm) |
Length(mm) |
-- |
100~1000 |
500~12000 |
-- |
|
Chemical Composition and Mechanical Properties(In Quenched & Tempered State)
Material |
4340 Alloy Steel |
||
Chemical Composition |
Mechanical Properties(In Quenched & Tempered State) |
||
C |
0.38-0.46 |
Tensile strength(MPA) |
1860 |
Si |
0.17-0.37 |
Yield strength (MPA) |
- |
Mn |
0.60-0.90 |
Elongation(δ5/%) |
- |
Cr |
0.70-0.95 |
Reduction in Area (ψ/%) |
25 |
Mo |
0.30-0.65 |
Impact (J) |
23 |
P |
≤0.010 |
Hardness (Anealed Condition) |
≤241HB |
S |
≤0.010 |
||
Cu |
≤0.30 |
||
Ni |
1.65-2.00 |
||
V |
Min 0.05 |
Description
4340 Steel is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength. A very popular, versatile steel. It can be heat-treated to produce a wide range of tensile strength in moderate sections.
Application
High voltage bolts and nuts, crankshafts, cam shafts, transmission axles, torsion bars, drive shafts, pump shafts, worm shafts, conveyor rollers, stems, pins, tie rods, clutch discs. Large-mass dies for hot stamping. 4340 Steel is widely used in the aerospace industry for structural parts of flaps assembly, fuselage and landing gear, propeller plane axles.
Product Application
Packing & Delivery
Standard export seaworthy packing.
Certifications
http://www.htspecialmetals.com/