Grade C45
Corresponding Standard DIN EN ISO 683-1-2018
Heat-Treatable Steels,alloy Steels and Free-Cutting Steels--Part 1: Non-Alloy Steels for Quenching and Tempering
Classification Carbon Steel
C45 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value 0.42 0.1 0.5 - - - - - - Cr+Mo+Ni≤0.63
Maximum Value 0.5 0.4 0.8 0.045 0.045 0.4 0.4 0.3 0.1
C45 Mechanical Properties
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
d≤16; t≤8 Quenching and Tempering 700~850 ≥490 ≥14 ≥35 ≥15
16<d≤40;8<t≤20 Quenching and Tempering 650~800 ≥430 ≥16 ≥40 ≥15
40<d≤100;20<t≤60 Quenching and Tempering 630~780 ≥370 ≥17 ≥45 ≥15
d≤16;t≤16 Normalizing (N) ≥620 ≥340 ≥14
16<d≤100;16<t≤100 Normalizing (N) ≥580 ≥305 ≥16
100<d≤250;100<t≤250 Normalizing (N) ≥560 ≥275 ≥16
All Sizes Shearable Condition (+S) ≤255
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17200-1987
Grade
Germany W-Nr.
DIN EN ISO 683-1-2018
Grade
Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
45 S45C 1042
1045
Gr.1043
C45 C45 AF65C45
C45
C45 1.0503 45 1650 070M46
50HS

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