4340V alloy
4340V round steel
4340V steel
4340V chemical composition table
4340V mechanical properties
Chemical Elements (mass weight - %)
Carbon, C (%): 0.37 ~ 0.44
Silicon, Si (%): 0.15 ~ 0.35
Manganese, Mn (%): 0.60 ~ 0.95
Phosphorus, P (%) ≤: 0.025
Sulfur, S (%) ≤: 0.025
Chromium, Cr (%): 0.60 ~ 0.95
Nickel, Ni (%): 1.55 ~ 2.00
Molybdenum, Mo (%): 0.40 ~ 0.60
Vanadium, V (%): 0.04 ~ 0.10
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Bar size: 4 inches
Tensile strength σb≥/MPa: 1000
Yield strength σs≥/MPa: 900
Elongation δ5≥(%): 12.0
Reduction of area ф ≥ (%): 40.0
Surface hardness: HBW 293 ~ 363
MAIN FEATURES AND MELTING PROCESS
The steels shall be manufactured by melting process EAF + LF + VD, EAF + LF + VD + ESR, IFF + ESR, VIM + VAR Melted and shall be finished by hot-rolled / hot forged / cold finished.
Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering.
PRODUCT PROFILE AND DIMENSIONS
Round bar & Disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.50 ~ 3mm X W10 ~ 1000mm X Coil
Heavy/middle plate via hot rolled: T60 - 400mm X W100 - 1200mm X L1000 - 4000mm
Forging piece: stepped shafts, other different shapes based on OEM.
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