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AISI 4820

Description

AISI 4820 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: AISI 4820
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel AISI 4820
UNS G47180
AISI 4720
SAE 4720
UNS G47200
SAE 4812
AISI 4815
SAE 4815
UNS G48150
SAE 4817
UNS G48170

Chemical composition(mass fraction)(wt.%) of the AISI 4820

C
Si
Mn
P
S
Cr Ni
0.18-0.23 0.15-0.35  0.5-0.7   0.035 0.04     3.25-3.75
Mo Al Cu Nb Ti V Ce
0.2-0.3             
N Co Pb B Other    
             
             

Mechanical Properties of steel grade AISI 4820

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)
288 (≥) 869 (≥) 41 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade AISI 4820

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
11 - -     0.23 -  
354 325 - 42.3 432   -  
764 - 22 23.2   223 342

Heat Treatment of steel grade AISI 4820

Heat treated : 1463°C - 1968°C

Technological Curves of steel grade AISI 4820

Cross Reference Table (Equivalent Grade) of AISI 4820

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

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