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MAR-M 421

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MAR-M 322 MAR-M 432
#MAR-M #421

Description

MAR-M 421 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: MAR-M 421
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy MAR-M 421
Magne Dur 20-4
Marage 200
Marage 250
Marage 300
Marage 350
MARINLOY HN
MAR-M 200
MAR-M 246
MAR-M 302
MAR-M 322

Chemical composition(mass fraction)(wt.%) of the MAR-M 421

C
≤		 Si
≤		 Mn
≤		 P
≤		 S
≤		 Cr Ni
00.15         15.8  
Mo Al Cu Nb Ti V Ce
2 4.3   2 1.8    
N Co Pb B Other    
  9.5   0.015 W 3.8
Zr 0.05		    
             

Mechanical Properties of steel grade MAR-M 421

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)
187 (≥) 376 (≥) 44 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade MAR-M 421

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
14 - -     0.12 -  
998 279 - 41.3 334   -  
193 - 14 11.2   313 324

Heat Treatment of steel grade MAR-M 421

Heat treated : 1855°C - 1865°C

Technological Curves of steel grade MAR-M 421

Cross Reference Table (Equivalent Grade) of MAR-M 421

Grade Standard Country Application
UNS J94213 AISI USA
415421 The Czech republic Structural steel
15421 The Czech republic Structural steel
419421 The Czech republic tool steel
CNS 421J1 China China Taiwan Stainless steel
SCM421 China China Taiwan Structural steel
J94213 UNS USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
J94213 UNS USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
MAR-M 322 MAR-M 432
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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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