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Grade C50R
1.1241
Corresponding Standard NF EN 10083-2-2006
Tempered non-alloy structural steel
Classification Carbon Steel
C50R Chemical Element Composition Content (%)
Component C ① Si Mn P S Cr Ni Mo More
Minimum Value 0.47 - 0.6 - 0.02 - - - Cr+Mo+Ni≤0.63 ①
Maximum Value 0.55 0.4 0.9 0.03 0.04 0.4 0.4 0.1
C50R Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
Steel: d ≤ 16mm; t ≤ 8mm Quenching + Tempering (+QT) 750~900 ≥520 ≥13 ≥30 HRC ①
≥56
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm Quenching + Tempering (+QT) 700~850 ≥460 ≥15 ≥35 HRC ①
≥56
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm Quenching + Tempering (+QT) 650~800 ≥400 ≥16 ≥40 HRC ①
≥56
Steel: d ≤ 16mm; t ≤ 16mm Normalizing (+N) ≥650 ≥355 ≥13
Steel: 16mm ≤ d ≤ 100mm; 16mm ≤ t ≤ 100mm Normalizing (+N) ≥610 ≥320 ≥14
Steel: 100mm ≤ d ≤ 250mm; 100mm ≤ t ≤ 250mm Normalizing (+N) ≥590 ≥290 ≥14
Steel: Processed to a Certain Shearability (+S) ≤255
Steel: Softening Annealing (+A) ≤217
C50R Corresponding Standards(Same grade name, different standards)
1 EN 10083-2-2006
C50R 1.1241
2 ISO 683-1-2016
C50R
3 DIN EN ISO 683-1-2018
C50R
4 ISO 683-18-2014
C50R
5 NF EN 10083-2-2006
C50R 1.1241

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