D6AC
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D6AC is a high-strength alloy steel with excellent comprehensive performance, widely used in aerospace and military industries.
Product name：
Inconel alloy
Material：
inconel800
Warehouse：
Tianjin
Surface treatment：
Pickled/bright/black etc.
Category：
Keyword：
D6AC
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Details description
Chemical Composition
Carbon (C) 0.38%-0.43%, Silicon (Si) 0.15%-0.35%, Manganese (Mn) 0.60%-0.90%, Phosphorus (P) ≤0.015%, Sulfur (S) ≤0.010%, Chromium (Cr) 0.80%-1.10%, Nickel (Ni) 1.80%-2.20%, Molybdenum (Mo) 0.40%-0.50%, Vanadium (V) 0.05%-0.10%.
Physical Properties
Density approximately 7.85g/cm³, Melting point 1420-1460℃.
Mechanical Properties
Under quenched + tempered state, Tensile strength ≥1655MPa, Yield strength ≥1517MPa, Elongation ≥10%, Reduction of area ≥45%, Impact toughness ≥47J/cm².
Performance Characteristics
High strength and high toughness: Through alloying and heat treatment, it has both extremely high strength and good toughness, outstanding fatigue resistance, suitable for components that withstand high stress and dynamic loads.
Good hardenability: Even large-section parts can obtain a uniform microstructure and performance, suitable for manufacturing thick-walled or large-size key components.
Moderate weldability: Preheat (150-200℃) is required before welding, and timely heat treatment is required after welding to eliminate stress and avoid cold cracks.
Limited corrosion resistance: Surface protection (such as galvanizing, coating) is required in humid or corrosive environments.
Processing Technology
Forging: Heating temperature 1100-1150℃, Final forging temperature ≥850℃, slow cooling after forging.
Heat treatment: Quenching (850-870℃ oil cooling) + Tempering (590-650℃ air cooling), the specific process needs to be adjusted according to the size and performance requirements of the parts.
Machining: Good machinability in the annealed state, hard alloy tools are required after quenching and tempering.
Application Fields
Aerospace: Rocket engine casings, missile structural parts, aircraft landing gear, fasteners, etc.
Military industry: Gun barrels, armored vehicle components, bulletproof plates, etc.
High-end machinery: High-strength bolts, shaft parts, molds, etc.
Execution Standards: AMS 6415 (USA), GB/T 3077 (China), EN 10083 (Europe)
Precautions
The heat treatment process significantly affects the performance and needs to be strictly controlled heating temperature and cooling rate.
Stress relief treatment must be carried out after welding to prevent hydrogen embrittlement and cracking.
Moisture-proof storage is required to avoid surface rust affecting performance.
Qualification certification
Corporate video
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Application fields
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