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AISI A4068

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UNS G40630 SAE 4068
#AISI # #A4068

Description

AISI A4068 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: AISI A4068
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel AISI A4068
SAE 4037
UNS G40370
SAE 4042
UNS G40420
AISI 4047
SAE 4047
UNS G40470
AISI 4053
SAE 4063
UNS G40630

Chemical composition(mass fraction)(wt.%) of the AISI A4068

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
 0.63-0.7 0.2-0.35  0.75-1  0.04  0.04     
Mo Al Cu Nb Ti V Ce
0.2-0.3             
N Co Pb B Other    
             
             

Mechanical Properties of steel grade AISI A4068

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)
676 (≥) 236 (≥) 11 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade AISI A4068

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
34 - -     0.41 -  
639 796 - 34.3 233   -  
488 - 13 34.2   221 142

Heat Treatment of steel grade AISI A4068

Heat treated : 1687°C - 1176°C

Technological Curves of steel grade AISI A4068

Cross Reference Table (Equivalent Grade) of AISI A4068

Grade Standard Country Application
AISI 431 AISI USA Martensitic special steel
AISI 440A AISI China Martensitic special steel
AISI 440B AISI USA Martensitic special steel
AISI 440F AISI USA Martensitic special steel
AISI 440F Se AISI USA Martensitic special steel
AISI 501 AISI USA Martensitic special steel
AISI 501A AISI USA Martensitic special steel
AISI 501B AISI USA Martensitic special steel
AISI 502 AISI USA Martensitic special steel
AISI 503 AISI USA Martensitic special steel
AISI 504 AISI USA Martensitic special steel
AISI S13800 USA precipitation hardening
AISI S15500 AISI USA precipitation hardening
AISI 632 AISI USA precipitation hardening
AISI 630 AISI USA precipitation hardening
AISI 635 AISI USA precipitation hardening
AISI 631 AISI USA precipitation hardening
AISI 633 AISI USA precipitation hardening
AISI 633 AISI USA precipitation hardening
AISI 634 AISI USA precipitation hardening
UNS G40630 SAE 4068
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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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