Grade C45R
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Carbon Steel
C45R Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value 0.42 0.1 0.5 - 0.02 - - - - Cr+Mo+Ni≤0.63
Maximum Value 0.5 0.4 0.8 0.025 0.04 0.4 0.4 0.3 0.1
C45R Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
5≤t≤10 Cold drawn (+C) 750~1050 ≥565 ≥5
10<t≤16 Cold drawn (+C) 710~1030 ≥500 ≥6
16<t≤40 Cold drawn (+C) 650~1000 ≥410 ≥7
40<t≤63 Cold drawn (+C) 630~900 ≥360 ≥8
63<t≤100 Cold drawn (+C) 580~850 ≥310 ≥8
16<t≤100 As-rolled + peeled (+SH) 580~820 172~241
16<t≤40 Quenched and tempered and peeled (+QT+SH) 650~800 ≥430 ≥16 ≥25
40<t≤100 Quenched and tempered and peeled (+QT+SH) 630~780 ≥370 ≥17 ≥25
5≤t≤10 Quenched and tempered + cold drawn (+QT +C) 850~1050 ≥595 ≥8
10<t≤16 Quenched and tempered + cold drawn (+QT +C) 810~1010 ≥565 ≥8
16<t≤40 Quenched and tempered + cold drawn (+QT +C) 700~900 ≥525 ≥9
40<t≤63 Quenched and tempered + cold drawn (+QT +C) 650~850 ≥455 ≥10
63<t≤100 Quenched and tempered + cold drawn (+QT +C) 650~850 ≥455 ≥11
Approximate Comparison Table
United States International Organization for Standardization Germany France European Standard
ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade
1045 C45R
C45M2
Cm45 XC48H1u C45R 1.1201
C45R Corresponding Standards(Same grade name, different standards)

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