AISI/SAE E3316 is a specially designed high-strength structural steel with excellent comprehensive mechanical properties and good manufacturability. Utilizing a nickel-chromium-molybdenum alloy system, this material achieves an optimal balance between high strength and superior toughness through precise composition control and heat treatment processes. Its key characteristics include exceptional fatigue strength and outstanding low-temperature toughness, making it particularly suitable for manufacturing critical components subjected to complex stresses.
Chemical Composition
The steel's chemical composition is strictly controlled as follows:
Carbon (C): 0.14～0.19%
Silicon (Si): 0.20～0.35%
Manganese (Mn): 0.45～0.60%
Phosphorus (P) ≤0.025%
Sulfur (S) ≤0.025%
Chromium (Cr): 1.40～1.75%
Nickel (Ni): 3.25～3.75%
Mechanical Properties
Tensile strength: ≥1080 MPa
Yield strength: ≥835 MPa
Elongation: ≥10%
Reduction of area: ≥50%
Impact toughness: ≥54 J (room temperature)
Hardness: HRC 28～35 (after quenching and tempering)
Material Characteristics & Processing Technology
Key Features:Excellent strength-toughness balance；Superior low-temperature impact performance；Outstanding fatigue strength；Moderate work hardening tendency.
Processing Guidelines:
Forging: Start at 1100°C, finish at ≥850°C
Heat treatment: Recommended quenching at 880±10°C (oil cooling), tempering at 540～650°C
Machining: Carbide tools preferred, medium-low cutting speeds
Welding: Preheat at 150～250°C, low-hydrogen electrodes recommended
Hot Working Parameters
Forging temperature range: 1100～850°C
Hot rolling temperature range: 1050～850°C
Annealing temperature: 680～720°C
Normalizing temperature: 890～920°C
Quenching soaking time: 1.5 h/25mm section thickness
Tempering soaking time: 2 h/25mm section thickness
Primary Applications
Aerospace: Landing gear components, engine mounts
Automotive: High-performance drive shafts, steering knuckles
Energy equipment: Turbine shafts, nuclear power fasteners
Construction machinery: Heavy excavator bucket pins, bearing housings
Defense products: Armored vehicle suspension components
Standard Dimensions & Forms
(1) Bar stock:
Diameter range: Φ20～Φ300 mm
Standard lengths: 3000～6000 mm
(2) Plate:
Thickness range: 6～80 mm
Width range: 1000～2000 mm
(3) Forgings:
Maximum single weight: 5000 kg
Shape complexity: Meets Class 4 forging requirements
(4) Other forms:
Tubular products: OD Φ50～Φ200 mm
Wire: Φ5～Φ20 mm
Technical sales assistance and service
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email:[email protected]
Baoshan District,
Shanghai, China.
