AISI 4340 / 1.6565 Alloy Steel

AISI 4340 / 1.6565 Alloy Steel

Steel round bar AISI 4340/SAE 4340 The AISI steel round bar  (AISI) 4340/SAE 4340, used in many applications, is made from high-strength low-alloy steel, supplemented with molybdenum, nickel, chromium, manganese, sulfur, phosphorus and silicon. Properties (features) AISI 4340 steel is characterized by the following advantages: the possibility of using the material in power shafts, spindles, […]

Description

Steel round bar AISI 4340/SAE 4340

The AISI steel round bar  (AISI) 4340/SAE 4340, used in many applications, is made from high-strength low-alloy steel, supplemented with molybdenum, nickel, chromium, manganese, sulfur, phosphorus and silicon.

Properties (features)

AISI 4340 steel is characterized by the following advantages:

the possibility of using the material in power shafts, spindles, bolts, connecting rods, gears, transmissions, instruments, aircraft landing gear, and other components and parts;
corrosion and weather resistance;
effective resistance to changes in humidity, alkaline, acidic compounds, as well as other destabilizing factors;
resistance to mechanical (deformation) loads;
affordable price.
Steel bar 4340/SAE 4340: price and sale

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Chemical content AISI 4340/SAE 4340

Standard Grade C Mn P S Si Ni Cr Mo
ASTM A29 4340 0.38-0.43 0.60-0.80 0.035 0.040 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30

Mechanical characteristics AISI 4340/SAE 4340

Condition Ruling section
mm
Tensile Strength MPa Yield Strength
MPa
Elong.
%
Izod Impact
J
Brinell
Hardness
T 250 850-1000 635 13 40 248-302
T 150 850-1000 665 13 54 248-302
U 100 930-1080 740 12 47 269-331
V 63 1000-1150 835 12 47 293-352
W 30 1080-1230 925 11 41 311-375
X 30 1150-1300 1005 10 34 341-401
Y 30 1230-1380 1080 10 24 363-429
Z 30 1555- 1125 5 10 444-

Forms of supply AISI 4340/SAE 4340 round bars

Steel bars
Steel grade Sizes (mm)
AISI 4340/SAE 4340 20-800

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