Grade X2CrTiNb18
ISO Numeric Designation 4509-439-40-X
Corresponding Standard ISO 4955-2016
Heat-Resistant Steels
Classification Alloy Steel
Properties Corrosion Resistance
X2CrTiNb18 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ti More
Minimum Value - - - - - 17.5 0.1 Nb:(3×C+0.30) ~1.00 *
Maximum Value 0.03 1 1 0.04 0.015 18.5 0.6
X2CrTiNb18 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
flat products, 0.5≤t≤12 Annealing (+A) 430~630 ≥230 ≥18
Profiles, hexagons; 5≤d≤25 Annealing (+A) 430~630 ≥230 ≥18
Bars and Profiles, 1.5≤d≤25 Annealing (+A) 430~630 ≥230 ≥18
Forgings, 5≤d≤15 Annealing (+A) 430~630 ≥230 ≥18
Approximate Comparison Table Ferritic Stainless Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS UNS ISO Numerical Grade EN Numerical Grade
022Cr18NbTi S11873 SUS430LX S43940
S43932
X2CrTiNb18 4509-439-40-X X2CrTiNb18 1.4509

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