Grade 12Cr21Ni5Ti
Old Grade
Corresponding Standard GJB 7960-2012
Specification for hot rolled (forged) stainless bars for launch vehicle
Classification Precipitation-Hardening Stainless Steel
12Cr21Ni5Ti Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N W V Al More
Minimum Value 0.09 - - - - 20 5.2 - - - - - - Ti:5(C-0.02)~0.65
Maximum Value 0.14 0.8 0.8 0.035 0.02 22 5.8 0.3 0.2 0.035 0.2 0.2 0.13
12Cr21Ni5Ti Mechanical Properties
condition Test Temperature Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Impact Energy Absorption
KV2
J
sample Room Temperature Heat Treatment 1 ≥650 ≥350 ≥20 ≥45 KU2
≥64
sample Room Temperature Heat Treatment 2 - - - - KU2
≥32

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