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Grade C45R
1.1201
Old Grade
Corresponding Standard NF EN 10083-2-2006
Tempered non-alloy structural steel
Classification Carbon Steel
C45R Chemical Element Composition Content (%)
Component C ① Si Mn P S Cr Ni Mo More
Minimum Value 0.42 - 0.5 - 0.02 - - - Cr+Mo+Ni≤0.63 ①
Maximum Value 0.5 0.4 0.8 0.03 0.04 0.4 0.4 0.1
C45R 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 		Impact Energy Absorption
KV2
J
Steel: d ≤ 16mm; t ≤ 8mm Quenching + Tempering (+QT) 700~850 ≥490 ≥14 ≥35 HRC ①
≥55
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm Quenching + Tempering (+QT) 650~800 ≥430 ≥16 ≥40 HRC ①
≥55		 ≥25
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm Quenching + Tempering (+QT) 630~780 ≥370 ≥17 ≥45 HRC ①
≥55		 ≥25
Steel: d ≤ 16mm; t ≤ 16mm Normalizing (+N) ≥620 ≥340 ≥14
Steel: 16mm ≤ d ≤ 100mm; 16mm ≤ t ≤ 100mm Normalizing (+N) ≥580 ≥305 ≥16
Steel: 100mm ≤ d ≤ 250mm; 100mm ≤ t ≤ 250mm Normalizing (+N) ≥560 ≥275 ≥16
Steel: Processed to a Certain Shearability (+S) ≤255
Steel: Softening Annealing (+A) ≤207
C45R Corresponding Standards(Same grade name, different standards)
1 EN 10083-2-2006
C45R 1.1201
2 ISO 683-1-2016
C45R
3 DIN EN ISO 683-1-2018
C45R
4 ISO 683-18-2014
C45R
5 NF EN 10083-2-2006
C45R 1.1201 (XC48H1U)

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