Grade 51CrV4
Corresponding Standard ISO 683-2-2016
Alloy steels for quenching and tempering
Classification Alloy Steel
51CrV4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu V
Minimum Value 0.47 0.1 0.6 - - 0.8 - 0.1
Maximum Value 0.55 0.4 1 0.025 0.025 1.1 0.4 0.25
51CrV4 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
Bar, flat material, forging; d≤16 or t≤8 Quenching and Tempering 1100~1300 ≥900 ≥9 ≥40
Bar, flat material, forging; 16<d≤40 or 8<t≤20 Quenching and Tempering 1000~1200 ≥800 ≥10 ≥45 ≥30
Bar, flat material, forging; 40<d≤100 or 20<t≤60 Quenching and Tempering 900~1100 ≥700 ≥12 ≥50 ≥30
Bars, flat products, forgings; 100<d≤160 or 60<t≤100 Quenching and Tempering 850~1000 ≥650 ≥13 ≥50 ≥30
Bars, Flats, Forgings; 160<d≤250 or 100<t≤160 Quenching and Tempering 800~950 ≥600 ≥13 ≥50 ≥30
Bars, flat products, forgings, semi-finished products, rebar Soft Annealing (+A) ≤248
1 Approximate Comparison Table Spring Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
50CrVA A23503 SUP10 SUP10 SPS6 6150 G61500 51CrV4 51CrV4 1.8159 50CrV4 51CrV4 1.8159 50ХФА 2230 735A50
2 Approximate Comparison Table Structural Alloy 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
50CrVA SUP10 6150 51CrV4 50CrV4 50CrV4
50CV4
51CrV4
51CrV4 1.8159 50KHGFA 2230 735A50
735A51

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!