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20MnB5

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E1741 27MnCrB5-2
#20MnB5

Description

Spain UNE 20MnB5 Spain structural alloy steel and 20MnB5 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 20MnB5
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20MnB5 UNE Spain Spain structural alloy steel
C10R
C15E
C15R
C16E
CUR
E1711
E1712
El721
E1740
E1741

Chemical composition(mass fraction)(wt.%) of the 20MnB5

C(％) Si(％) Mn(％) P(％) S(％) B(%)
0.17-0.23 0.4 1.10-1.40 0.035 0.04 0.0008-0.0050

Mechanical Properties of steel grade 20MnB5

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)
373 (≥) 195 (≥) 21 33 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 20MnB5

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
21 - -     0.13 -  
842 484 - 14.3 242   -  
289 - 21 42.2   221 224

Heat Treatment of steel grade 20MnB5

Heat treated : 1781°C - 1886°C

Technological Curves of steel grade 20MnB5

Cross Reference Table (Equivalent Grade) of 20MnB5

Grade Standard Country Application
20MnB5q STAS/SR Romania Alloy structural steel
20MnB5 UNE Spain Spain structural alloy steel
EN 20MnB5 EN Euronorm Euronorm Structural steel
E1741 27MnCrB5-2
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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