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Description

MT-321 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: MT-321
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy MT-321
MT-302
MT-304
MT-304L
MT-305
MT-309S
MT-309S-Cb
MT-310S
MT-316
MT-316L
MT-317

Chemical composition(mass fraction)(wt.%) of the MT-321

 



C
Si
Mn
P
S
Cr Ni
0.08 1 2 0.04 0.03 17-20 9-13
Mo Al Cu Nb Ti V Ce
        5*C~0.6    
N Co Pb B Other    
             
             

Mechanical Properties of steel grade MT-321

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)
666 (≥) 391 (≥) 11 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade MT-321

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 - -     0.21 -  
556 696 - 22.3 244   -  
176 - 12 33.2   441 333

Heat Treatment of steel grade MT-321

Heat treated : 1957°C - 1334°C

Technological Curves of steel grade MT-321


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