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21-6 9LC

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20Mo-6 HS 22-4-9
#21-6 #9LC

Description

21-6 9LC High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 21-6 9LC
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy 21-6 9LC
18-17LC
18-18-2
18-18-Plus
18Cr-Cb
HP-10
19-9DL
19-9DX
19-9-W-Mo
20-45-5
20Mo-6 HS

Chemical composition(mass fraction)(wt.%) of the 21-6 9LC

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
0.04 1.00 8.00-10.0     18.0-21.0 5.0-7.0
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
0.15-0.40            
             

Mechanical Properties of steel grade 21-6 9LC

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)
829 (≥) 246 (≥) 41 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade 21-6 9LC

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 - -     0.24 -  
413 769 - 23.3 113   -  
957 - 21 22.2   333 221

Heat Treatment of steel grade 21-6 9LC

Heat treated : 1498°C - 1235°C

Technological Curves of steel grade 21-6 9LC

Cross Reference Table (Equivalent Grade) of 21-6 9LC

Grade Standard Country Application
X70CrMnNiN21-6 DIN Germany Valve steel
20Mo-6 HS 22-4-9
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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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