1. Key Properties
AISI/SAE 4340 and 34CrNiMo6 Forged + Quenched & Tempered + Peeled (F+QT+P) are high-performance alloy steels that undergo a multi-step processing method to achieve optimal mechanical properties and superior surface finish. The combination of forging, quenching and tempering, and peeling ensures the material has enhanced strength, toughness, wear resistance, and a high-quality, smooth surface. This makes it ideal for demanding applications requiring both high strength and precise dimensional accuracy.
Forged: Improves grain structure, strength, and toughness.
Quenched & Tempered: Increases hardness, tensile strength, and fatigue resistance.
Peeled: Provides a smooth, precise surface finish, eliminating surface imperfections for critical applications.
2. Applications/Industries
Aerospace (e.g., turbine shafts, landing gears)
Automotive (e.g., high-strength gears, crankshafts, axles)
Industrial Machinery (e.g., shafts, spindles, heavy-duty components)
Oil & Gas Equipment (e.g., drill collars, pumps)
Power Transmission Components (e.g., couplings, gears)
Heavy Equipment (e.g., military and construction equipment)
3. Certifications/Standards
Meets ASTM A29 standards
Meets SAE 4340 and DIN 34CrNiMo6 specifications
ISO 9001 certified
4. Chemical Composition
AISI/SAE 4340:
Carbon (C): 0.38–0.43%
Manganese (Mn): 0.60–0.80%
Chromium (Cr): 0.70–0.90%
Nickel (Ni): 1.65–2.00%
Molybdenum (Mo): 0.20–0.30%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.04%
34CrNiMo6:
Carbon (C): 0.38–0.43%
Manganese (Mn): 0.60–0.90%
Chromium (Cr): 0.90–1.20%
Nickel (Ni): 1.20–1.60%
Molybdenum (Mo): 0.15–0.30%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.035%
5. Technical Specifications
Yield Strength: 1000–1300 MPa (depending on heat treatment)
Tensile Strength: 1200–1500 MPa
Hardness: 28–32 HRC (Rockwell Hardness)