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Description

S21800 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: S21800
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy S21800
S31651
N08367
N08926
S31254
S32654
S20161
XM-19
S20910
XM-31
S21400

Chemical composition(mass fraction)(wt.%) of the S21800

C
Si
Mn
P
S
Cr Ni
0.1 3.5-4.5 7-9 0.06 0.03 16-18 8-9
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
0.08-0.18            
             

Mechanical Properties of steel grade S21800

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)
517 (≥) 644 (≥) 14 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade S21800

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 - -     0.21 -  
133 111 - 44.3 224   -  
521 - 31 33.2   143 142

Heat Treatment of steel grade S21800

Heat treated : 1392°C - 1374°C

Technological Curves of steel grade S21800


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