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SAE 4820

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AISI 4820 UNS G48200
#SAE # #4820

Description

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

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

Chemical composition(mass fraction)(wt.%) of the SAE 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 SAE 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)
212 (≥) 797 (≥) 14 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade SAE 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
12 - -     0.44 -  
998 145 - 24.3 123   -  
839 - 21 34.2   211 242

Heat Treatment of steel grade SAE 4820

Heat treated : 1913°C - 1674°C

Technological Curves of steel grade SAE 4820

Cross Reference Table (Equivalent Grade) of SAE 4820

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 4820 UNS G48200
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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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