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20Mn

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15Mn 25Mn
#20Mn

Description

China GBT 20Mn China structural steel and alloy steel and 20Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 20Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20Mn GBT China China structural steel and alloy steel
45
50
55
60
65
70
75
80
85
15Mn

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.17-0.23 0.17-0.37 0.70-1.00 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade 20Mn

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)
139 (≥) 756 (≥) 31 34 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade 20Mn

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
32 - -     0.43 -  
635 921 - 11.3 224   -  
254 - 34 44.2   424 342

Heat Treatment of steel grade 20Mn

Heat treated : 1119°C - 1192°C

Technological Curves of steel grade 20Mn

Cross Reference Table (Equivalent Grade) of 20Mn

Grade Standard Country Application
GS-20Mn5 DIN Germany
GS-20MnCr5 DIN Germany
GS-20MnCrMo6 3 DIN Germany
22Cr20Mn10Ni2Si2N GBT China Stainless steel bars
20Mn10 STAS/SR Romania Structural steel
20MnCr12 STAS/SR Romania Alloy structural steel
20MnCr12S STAS/SR Romania Alloy structural steel
20MnCr12X STAS/SR Romania Alloy structural steel
20MnCr12XS STAS/SR Romania Alloy structural steel
20MnCrSi11 STAS/SR Romania Alloy structural steel
20MnCrSi11S STAS/SR Romania Alloy structural steel
20MnCrSi11X STAS/SR Romania Alloy structural steel
20MnCrSi11XS STAS/SR Romania Alloy structural steel
20MnB5q STAS/SR Romania Alloy structural steel
20MnCr5 UNE Spain Spain structural alloy steel
20MnCrS5 UNE Spain Spain structural alloy steel
20MnB5 UNE Spain Spain structural alloy steel
20MnG GBT China China structural steel and alloy steel
20Mn GBT China China structural steel and alloy steel
20Mn2 GBT China China structural steel and alloy steel
15Mn 25Mn
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Jiangyou Longhai Special Steel Co.,Ltd.
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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