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AISI SAE 4340 Forged Alloy Steel Bar

Group Hot Forged Steel Bars
PriceUS $1500 / metric ton
Min. Order 1 metric ton
Terms of Payment L/C, D/A, D/P, T/T
Update Time 2019-05-29
Item specifics
Steel gradeAISI/SAE 4340
ApplicationsHeavy Duty Shafts, Gears, Axles, Spindles, Couplin
Heat treatmentNormalized,Quenching and Tmenpering
Surface conditionBlack or bright surface
StandardASTM A26
Introduce

4340 steel is a nickel chromium molybdenum high hardenability high tensile steel, generally supplied hardened and tempered in the tensile range of 930 - 1080 Mpa (condition U) - (Rc 28 - 36). Characterised by high strength and toughness in relatively large sections. Pre hardened and tempered 4340 can be further surface hardened by flame or induction hardening and by nitriding.  We also supply forged styeel bar, including 4130, 4140, 4145, 4145H, 4330 etc

Application

4340 is used in most industry sectors for applications requiring higher tensile/yield strength than 4140 can provide. Typical applications are: Heavy Duty Shafts, Gears, Axles, Spindles, Couplings, Pins etc

Chemical component
Steel
C
SI
MN
NI
Cr
Mo
P
S
4340
0.33-0.44
0.10-0.35
0.55-0.90
1.55-2.00
0.65-0.96
0.20-0.35
max0.03
max0.03
Mechanical property
Tensile strength MPA 
Yield strength MPA min
Elongation % min
850-1000
700
12