Grade 20Cr1Mo1VA
Corresponding Standard GB /T 20410-2006
Steels for Turbine Bolts at High Temperature
Classification Alloy Steel
20Cr1Mo1VA Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo V Al
Minimum Value 0.15 0.2 0.4 - - 1 - - 0.9 0.15 -
Maximum Value 0.23 0.6 0.85 0.025 0.025 1.5 0.3 0.25 1.2 0.3 0.015
20Cr1Mo1VA Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
d=25 Quenching + Tempering 700~850 ≥550 ≥16 HBW10/3000
210~250
≥69
High Temperature Tempering ≤241

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