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R44

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R37 R52
#R44

Description

Romania STAS/SR R44 Structural steel and R44 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: R44
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel R44 STAS/SR Romania Structural steel
B2
A21
26MnSil7
9SiMn16
10Ni35
HSiMn10
RV510
A4
A5
R37

Chemical composition(mass fraction)(wt.%) of the R44

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Cu(%) Al(%)
Min 0.20 0.17- 0.45 0.80-1.10 0.040 0.040 Min 0.30 0.30 Min 0.025

Mechanical Properties of steel grade R44

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)
249 (≥) 243 (≥) 43 43 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade R44

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 - -     0.22 -  
454 212 - 43.3 442   -  
326 - 14 43.2   123 313

Heat Treatment of steel grade R44

Heat treated : 1862°C - 1942°C

Technological Curves of steel grade R44

Cross Reference Table (Equivalent Grade) of R44

Grade Standard Country Application
STR446 KS Korea KS standard ferrite heat resistant steel
R44 STAS/SR Romania Structural steel
SCr440H CNS China China Taiwan Structural steel
SCr440 CNS China China Taiwan Structural steel
SCr445 CNS China China Taiwan Structural steel
R37 R52
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