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SAE E4340

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AISI E4340 UNS G43406
#SAE # #E4340

Description

SAE E4340 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SAE E4340
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SAE E4340
UNS G43200
AISI 4337
SAE 4337
UNS G43370
AISI E4337
UNS G43376
AISI 4340
SAE 4340
UNS G43400
AISI E4340

Chemical composition(mass fraction)(wt.%) of the SAE E4340

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
 0.38-0.43 0.15-0.35  0.65-0.85 0.025  0.025  0.7-0.9  1.65-2.0 
Mo Al Cu Nb Ti V Ce
0.2-0.3             
N Co Pb B Other    
             
             

Mechanical Properties of steel grade SAE E4340

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
186 (≥) 494 (≥) 34 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade SAE E4340

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
24 - -     0.31 -  
157 736 - 24.3 443   -  
285 - 41 34.2   431 111

Heat Treatment of steel grade SAE E4340

Heat treated : 1248°C - 1167°C

Technological Curves of steel grade SAE E4340

Cross Reference Table (Equivalent Grade) of SAE E4340

Grade Standard Country Application
SAE NVl(1541) SAE USA precipitation hardening
SAE NV2(1547) SAE USA precipitation hardening
SAE NV3 SAE USA precipitation hardening
SAE NV4(3140) SAE USA precipitation hardening
SAE NV5(8645) SAE USA precipitation hardening
SAE NV6(5150) SAE USA precipitation hardening
SAE NV7(4140) SAE USA precipitation hardening
SAE NV8 USA precipitation hardening
SAE NV9 SAE USA precipitation hardening
SAE HNVl SAE USA precipitation hardening
SAE HNV2 SAE USA precipitation hardening
SAE HNV3 SAE USA precipitation hardening
SAE HNV4 SAE USA precipitation hardening
SAE HNV5 SAE USA precipitation hardening
SAE HNV6 SAE USA precipitation hardening
SAE HNV7(71360) SAE USA precipitation hardening
SAE HNV8 SAE USA precipitation hardening
SAE EVl SAE USA precipitation hardening
SAE EV2 SAE USA precipitation hardening
SAE EV3 SAE USA precipitation hardening
AISI E4340 UNS G43406
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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