AISI4340 alloy steel is an excellent material with stable mechanical properties, and excellent strength, toughness and fatigue resistance can be obtained after heat treatment. The following are the features and applications of AISI4340 alloy steel::
AISI4340 Chemical Composition:
Carbon c: 038～0.43
Silicon si: 015～0.35
Manganese mn: 060～0.90
Sulfur s : 0040
Phosphorus p : 0035
Chromium cr: 060～0.90
Nickel ni:165～2.00
Copper cu: 0025
Molybdenum mo: 020～0.30
AISI4340 Mechanical Properties:
Tensile Strength b (MPa): 980(100).
Yield Strength S (MPa): 835(85).
Elongation δ5 : 12
Section shrinkage 55
Impact power AKV (J): 78
Impact toughness value kv (j cm2): 98(10).
Hardness : 269HB
Features: Stable mechanical properties: AISI4340 alloy steel has stable mechanical properties, which ensures the reliability and consistency of parts under different working conditions.
Excellent strength and toughness: After heat treatment, AISI4340 alloy steel can obtain excellent strength and toughness, which is suitable for manufacturing mechanical parts that need to withstand high loads.
Good fatigue resistance: AISI4340 alloy steel has good fatigue resistance, and can withstand cyclic loading for a long time without being prone to damage.
Application: High-load mechanical parts manufacturing: Because AISI4340 alloy steel has excellent strength, toughness and fatigue resistance, it is often used to manufacture high-load, high-strength mechanical parts, such as bearings, gears, crankshafts, etc.
Aerospace industry: AISI4340 alloy steel has a wide range of applications in the aerospace field, used to manufacture key components requiring high strength and fatigue resistance, such as aero engine parts and aircraft landing gear.
AISI4340 alloy steel is also a commonly used material in automotive engines, transmissions, and transmission systems to ensure reliability and durability of components at high speeds.
In a word, AISI4340 alloy steel is suitable for manufacturing high-load, high-strength mechanical parts due to its stable mechanical properties, excellent strength, toughness and fatigue resistance. It plays an important role in aerospace, ** and other fields.