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R52

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R44 12MoCr22
#R52

Description

Romania STAS/SR R52 Structural steel and R52 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: R52
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel R52 STAS/SR Romania Structural steel
A21
26MnSil7
9SiMn16
10Ni35
HSiMn10
RV510
A4
A5
R37
R44

Chemical composition(mass fraction)(wt.%) of the R52

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) V(%) Cu(%) Al(%)
Min 0.18 0.17-0.45 1.05-1.65 0.035 0.035 Min 0.30 Min 0.15 0.30 Min 0.025

Mechanical Properties of steel grade R52

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)
399 (≥) 943 (≥) 41 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade R52

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
41 - -     0.42 -  
544 943 - 32.3 111   -  
389 - 32 43.2   132 124

Heat Treatment of steel grade R52

Heat treated : 1695°C - 1359°C

Technological Curves of steel grade R52

Cross Reference Table (Equivalent Grade) of R52

Grade Standard Country Application
R52 STAS/SR Romania Structural steel
100VMoCr52 STAS/SR Romania tool steel
39VSiMoCr52 STAS/SR Romania tool steel
40VSiMoCr52 STAS/SR Romania tool steel
R44 12MoCr22
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