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12021

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12020 12022
#12021

Description

Czech Republic CSN 12021 The Czech republic Structural steel and 12021 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 12021
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 12021 CSN Czech Republic The Czech republic Structural steel
11550
11600
11650
11700
11800
12010
12011
12014
12015
12020

Chemical composition(mass fraction)(wt.%) of the 12021

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.07-0.15 0.17-0.35 0.35-0.60 0.040 0.040 0.25 0.25 0.25

Mechanical Properties of steel grade 12021

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)
443 (≥) 315 (≥) 32 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade 12021

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
44 - -     0.11 -  
313 827 - 23.3 112   -  
238 - 31 24.2   332 314

Heat Treatment of steel grade 12021

Heat treated : 1591°C - 1582°C

Technological Curves of steel grade 12021

Cross Reference Table (Equivalent Grade) of 12021

Grade Standard Country Application
412021 CSN Czech Republic The Czech republic Structural steel
12021 CSN Czech Republic The Czech republic Structural steel
12020 12022
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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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