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ASTM 8Q

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ICI 4130 ICI 4140
#ASTM # # #8Q

Description

ASTM 8Q Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: ASTM 8Q
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel ASTM 8Q
ICI 1040
ASTM 4A
ASTM 4Q
ICI 1050
ASTM 5N
ICI 6120
ASTM 6N
ICI 4020
ASTM 7Q
ICI 4130

Chemical composition(mass fraction)(wt.%) of the ASTM 8Q

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
0.35-0.45 0.2-0.8 0.7-1.0 0.04 0.045 0.8-1.1 0.5
Mo Al Cu Nb Ti W Ce
0.15-0.25   0.5     0.1  
N Co Pb B Other    
             
             

Mechanical Properties of steel grade ASTM 8Q

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)
343 (≥) 752 (≥) 21 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade ASTM 8Q

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
31 - -     0.33 -  
711 997 - 32.3 333   -  
584 - 44 12.2   142 322

Heat Treatment of steel grade ASTM 8Q

Heat treated : 1936°C - 1534°C

Technological Curves of steel grade ASTM 8Q

Cross Reference Table (Equivalent Grade) of ASTM 8Q

Grade Standard Country Application
ASTM 1030 ASTM USA General use carbon steel bar
ASTM 1005 ASTM USA General use carbon steel bar
ASTM 1006 ASTM USA General use carbon steel bar
ASTM 1008 ASTM USA General use carbon steel bar
ASTM 1010 ASTM USA General use carbon steel bar
ASTM 1013 ASTM USA General use carbon steel bar
ASTM 1015 ASTM USA General use carbon steel bar
ASTM 1016 ASTM USA General use carbon steel bar
ASTM 1017 ASTM USA General use carbon steel bar
ASTM 1018 ASTM USA General use carbon steel bar
ASTM 1019 ASTM USA General use carbon steel bar
ASTM 1020 ASTM USA General use carbon steel bar
ASTM 1021 ASTM USA General use carbon steel bar
ASTM W1-A ASTM USA Carbon tool steel
ASTM A182 F55 ASTM USA Super Duplex
ASTM 431 ASTM USA Martensitic special steel
ASTM 440A ASTM USA Martensitic special steel
ASTM 440B ASTM USA Martensitic special steel
ASTM 440C ASTM USA Martensitic special steel
ASTM 501 ASTM USA Martensitic special steel
ICI 4130 ICI 4140
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