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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
X2CrTiNb18 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X2CrTiNb 18 1.4509
2 ISO 4955-2005
X2CrTiNb18
3 EN 10296-2-2005
X2CrTiNb18 1.4509
4 EN 10088-3-2005
X2CrTiNb18 1.4509
5 EN 10088-3-2014
X2CrTiNb18 1.4509
6 ISO 15510-2014
X2CrTiNb18 4509-439-40-X
7 ISO 9328-7-2018
X2CrTiNb18
8 DIN EN 10088-3-2014
X2CrTiNb18 1.4509
9 ISO 4955-2016
X2CrTiNb18 4509-439-40-X
10 NF EN 10088-2-2005
X2CrTiNb18 1.4509
11 NF EN 10088-1-2005
X2CrTiNb18 1.4509
12 NF EN 10028-7-2008
X2CrTiNb18 1.4509
13 NF EN 10296-2-2005
X2CrTiNb18 1.4509
14 NF EN 10028-7-2000
X2CrTiNb18 1.4509
15 DIN EN 10296-2-2006
X2CrTiNb18 1.4509
16 EN 10088-2-2024
X2CrTiNb18 1.4509
17 EN 10028-7-2016
X2CrTiNb18 1.4509

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