AMS 6304
2025-12-17 14:02:00 Origin： Remark：0 Click：
Aerospace quality alloy steel AMS 6304 annealed round bar stock available AMS 6304 0.95Cr - 0.5Mo - 0.3V high tensile strength low alloy steel, hot forged / rolled
TECHNICAL DATA SHEET - AMS 6304
Material category: 0.95Cr - 0.5Mo - 0.3V high tensile strength low alloy steel
Technical specifications: AMS 6404L
Technical specifications: AMS 6404L
Specical melting process: consumable electrode remelted
Stock available: round bar diam. 16 ~ 230 mm
Typical chemical elements ( mass fraction %)
Typical chemical elements ( mass fraction %)
Carbon, C (％): 0.40 ~ 0.50
Manganese, Mn (％): 0.40 ~ 0.70
Silicon, Si (％): 0.15 ~ 0.35
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (%): 0.80 ~ 1.10
Vanandium, V (%): 0.25 ~ 0.35
Molybdenum, Mo (%): 0.45 ~ 0.65
Manganese, Mn (％): 0.40 ~ 0.70
Silicon, Si (％): 0.15 ~ 0.35
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (%): 0.80 ~ 1.10
Vanandium, V (%): 0.25 ~ 0.35
Molybdenum, Mo (%): 0.45 ~ 0.65
Nickel, Ni (%): ≤ 0.25
Copper, Cu (%): ≤ 0.35
MECHANICAL PROPERTY AND HARDNESS
Quenching temperature 930℃, oil cooled
Tempering temperature 600℃, air cooled
Tensile strength, σb ≥ MPa: 825
Yield strength, σ0.2 ≥ MPa: 720
Elongation, δ5 ≥ (％): 18.0
Reduction of area, ф ≥ (％): 50.0
Hardness in condition of annealing +A: HB 230 max.
Elongation, δ5 ≥ (％): 18.0
Reduction of area, ф ≥ (％): 50.0
Hardness in condition of annealing +A: HB 230 max.
MELTING PROCESS & APPLICATION
AMS 6304 alloy is generally smelt in Electric Arc Furnace (EAF), BEF + Electroslag remelting (ESR).
For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
It is suitable for applications such as high tensile shafts, bolts and nuts, gears, pinions spindles and so on.
PROFIRLE & DIMENSIONS
Rod / round bar / disc: 6.0 to 850 mm
Square bar / flat bar: 10 to 800 mm
Length: random length or based on the customer's special requirement.
Other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com.
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