AMS 6431
2025-11-18 10:26:00 Origin： Remark：0 Click：
Ultra high strength 1471 ~ 1520 MPa alloy steel AMS 6431 round bar, D6-AC VIM + ESR, hot forged, rolled, heat treated, 100% Ultrasonic flaw detection test, cold worked
TECHNICAL DATA SHEET - AMS 6431
MATERIAL CATEGORY: Ultra high strength 1471 / 1520Mpa alloy steel
MAIN FEATURES: D6AC VAC-ARC steel is a medium carbon, low alloy, ultra high strength 1471Mpa steel primarily designed for high strength structural applications
D6AC steel is produced by the consumable electrode vacuum arc remelting process to provide optimum cleanliness and preferred ingot structure, which in turn provide optimum transverse mechanical properties.
TYPICAL CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): 0.42 ~ 0.48
Silicon, Si (％): 0.15 ~ 0.35
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％): ≤ 0.015
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 0.90 ~ 1.20
Silicon, Si (％): 0.15 ~ 0.35
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％): ≤ 0.015
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 0.90 ~ 1.20
Nickel, Ni (%): 0.40 ~ 0.70
Molybdenum, Mo (％): 0.90 ~ 1.10
Molybdenum, Mo (％): 0.90 ~ 1.10
Vanadium, V (%): 0.05 ~ 0.10
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment - Austenitized at 900℃ . Oil quenched and air cooled, or salt quenched at 205 ~ 220 ℃ for 10 minutes and air cooled
Tensile strength, σb ≥ MPa: 1471
Yield strength, σs ≥ MPa: 1373
Elongation, δ5 ≥ (%): 9.0
Yield strength, σs ≥ MPa: 1373
Elongation, δ5 ≥ (%): 9.0
Impact strength, AKv ≥ J: 35.0
Hardness HRC: 45
Hardness HRC: 45
Working pressure / MPa: 932.0
Bursting pressure / MPa: 1275.0
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft, Pressure vessel.
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE & DIMENSIONS
Round bar & disc (diameter): 6.0 to 800 mm
Square bar / flat bar: 6 to 800 mm
Length: random length or based on the customer's special requirement.
Round bar & disc (diameter): 6.0 to 800 mm
Square bar / flat bar: 6 to 800 mm
Length: random length or based on the customer's special requirement.
Steel strip: T0.5 ~ 3mm X W10 ~ 1000mm X Coil
Heavy/middle plate via hot rolled: T60 - 300 X W60 - 1000mm X L1000 ~ 2000mm
Forging piece: stepped shafts, other different shapes based on OEM.
Heavy/middle plate via hot rolled: T60 - 300 X W60 - 1000mm X L1000 ~ 2000mm
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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