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Grade X2CrNiMoN18-12-4
1.4434
Corresponding Standard NF EN 10028-7-2008
Flat products made of steels for pressure purposes - Part 7 : stainless steels
Classification Austenitic Stainless Steel
X2CrNiMoN18-12-4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N
Minimum Value - - - - - 16.5 10.5 3 0.1
Maximum Value 0.03 1 2 0.045 0.015 19.5 14 4 0.2
◎ Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel.
X2CrNiMoN18-12-4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Impact Energy Absorption
KV2
J
C：T ≤ 8 +AT 570~770 Rp0.2：≥290
Rp1.0：≥320
①②		 T ＜ 3mm: ≥35
T ≥ 3mm: ≥ 35
②③		 20℃：
(l: ≥100；t: ≥60)
-196℃：
(t: ≥60)
H：T ≤ 13.5 +AT 570~770 Rp0.2：≥270
Rp1.0：≥310
①②		 T ＜ 3mm: ≥35
T ≥ 3mm: ≥ 35
②③		 20℃：
(l: ≥100；t: ≥60)
-196℃：
(t: ≥60)
P：T ≤ 75 +AT 540~740 Rp0.2：≥270
Rp1.0：≥310
①②		 T ＜ 3mm: ≥40
T ≥ 3mm: ≥ 40
②③		 20℃：
(l: ≥100；t: ≥60)
-196℃：
(t: ≥60)
◎ C-Cold rolled strip；H-Hot rolled strip；P-Hot rolled plate；T-Thickness；t-transverse；l-Longitudinal
◎ +A=annealed；+AT=solution annealed；+QT = quenched and tempered；+RA=recrystallizing annealed condition
Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
022Cr19Ni13Mo4N S31753 317LN SUS 317LN STS 317LN 317LN S31753 X2CrNiMoN 18-12-4 X2CrNiMoN 18-12-4 1.4434 X2CrNiMoN 18-12-4 X2CrNiMoN 18-12-4 1.4434
X2CrNiMoN18-12-4 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X2CrNiMoN 18-12-4 1.4434
2 ISO TS 15510-2003
X2CrNiMoN18-12-4
3 ISO 15510-2014
X2CrNiMoN18-12-4 4434-317-53-I
4 ISO 9328-7-2018
X2CrNiMoN18-12-4
5 NF EN 10088-2-2005
X2CrNiMoN18-12-4 1.4434
6 NF EN 10088-1-2005
X2CrNiMoN18-12-4 1.4434
7 NF EN 10028-7-2008
X2CrNiMoN18-12-4 1.4434
8 NF EN 10028-7-2000
X2CrNiMoN18-12-4 1.4434

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