STHA 23

This page provides STHA 23 datasheet, STHA 23 mechanical properties, chemical element STHA 23, technical specifications of STHA 23 steel material properties. STHA 23 performance specifications.

Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel STHA 23 KS Korea Boiler steel grade and alloy steel tubes for heat exchanger
SEV 345/SEV 35
SBB 410/SBB 42
SBB 450/SBB 46
SBB 450M/SBB 46M
SBB 480/SBB 49
SBB 480M/SBB 49M
STHA 12
STHA 13
STHA 20
STHA 22
Datasheet for:Steel Grades:Structure Steel:STHA 23

Chemical composition(mass fraction)(wt.%) of the STHA 23

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%)
0.15 0.50-1.00 0.30-0.60 0.030 0.030 1.00-1.50 0.45-0.65

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade STHA 23

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)
266 (≥) 988 (≥) 41 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 424
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
43 - -     0.11 -  
872 844 - 43.3 314   -  
194 - 31 22.2   411 413
Heat treated : 1446°C - 1852°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
STHA 23 KS Korea
Boiler steel grade and alloy steel tubes for heat exchanger
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STHA 23 can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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