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E1740

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El721 E1741
#E1740

Description

Spain UNE E1740 Spain structural alloy steel and E1740 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: E1740
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel E1740 UNE Spain Spain structural alloy steel
28CcS4
C10E
C10R
C15E
C15R
C16E
CUR
E1711
E1712
El721

Chemical composition(mass fraction)(wt.%) of the E1740

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％)
0.38-0.45 0.20-0.50 0.50-0.80 0.035 0.035 1.50-1.80 0.25-0.40

Mechanical Properties of steel grade E1740

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)
653 (≥) 266 (≥) 21 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade E1740

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 - -     0.24 -  
374 345 - 43.3 132   -  
742 - 24 41.2   121 113

Heat Treatment of steel grade E1740

Heat treated : 1756°C - 1511°C

Technological Curves of steel grade E1740

Cross Reference Table (Equivalent Grade) of E1740

Grade Standard Country Application
E1740 UNE Spain Spain structural alloy steel
El721 E1741
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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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