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Grade C40
1.0511
Corresponding Standard NF EN 10083-2-2006
Tempered non-alloy structural steel
Classification Carbon Steel
C40 Chemical Element Composition Content (%)
Component C ① Si Mn P S Cr Ni Mo More
Minimum Value 0.37 - 0.5 - - - - - Cr+Mo+Ni≤0.63 ①
Maximum Value 0.44 0.4 0.8 0.045 0.045 0.4 0.4 0.1
C40 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
%
Steel: d ≤ 16mm; t ≤ 8mm Quenching + Tempering (+QT) 650~800 ≥460 ≥16 ≥35
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm Quenching + Tempering (+QT) 630~780 ≥400 ≥18 ≥40
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm Quenching + Tempering (+QT) 600~750 ≥350 ≥19 ≥45
Steel: d ≤ 16mm; t ≤ 16mm Normalizing (+N) ≥580 ≥320 ≥16
Steel: 16mm ≤ d ≤ 100mm; 16mm ≤ t ≤ 100mm Normalizing (+N) ≥550 ≥290 ≥17
Steel: 100mm ≤ d ≤ 250mm; 100mm ≤ t ≤ 250mm Normalizing (+N) ≥530 ≥260 ≥17
C40 Corresponding Standards(Same grade name, different standards)
1 ISO 683-18-1996
C40
2 DIN 17200-1987
C40 1.0511
3 EN 10083-2-2006
C40 1.0511
4 JIS G 7401-2000
(C40) 41CrNiMo2E
5 ISO 4954-1993
(C40) 41CrNiMo2E
6 EN 10250-2-2000
C40 1.0511
7 EN 10277-2-2008
C40 1.0511
8 ISO 683-1-2016
C40
9 DIN EN ISO 683-1-2018
C40
10 ISO 683-18-2014
C40
11 NF EN 10083-2-2006
C40 1.0511

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