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Grade X7CrNiNb18-10
Corresponding Standard ISO 4955-2005
Heat-resistant Steels
Classification Alloy Steel
Properties Corrosion Resistance
X7CrNiNb18-10 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni More
Minimum Value 0.04 - - - - 17 9 Nb：10×C ~ 1.20 *
Maximum Value 0.1 1 2 0.045 0.03 19 12
New and Old Grade Replacement List
Corresponding Standard Grade
ISO 4955-1994
Grade
Old Grade
ISO 4955-2005
Grade
ISO 4955-2016
Grade
ISO Numeric Designation
Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization France European Standard
GB ISC JIS ASTM/AISI UNS ISO Numerical Grade NF EN/NF EN Numerical Grade
07Cr18Ni11Nb
(1Cr19Ni11Nb) 		S34779 SUS347H 347H S34709 X7CrNiNb18-10 4912-347-09-I Z2CND17-11
Z2CND18-13
Z8CNNb18-10 		X7CrNiNb18-10 1.4912
X7CrNiNb18-10 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X7CrNiNb 18-10 1.4912
2 ISO 4955-2005
X7CrNiNb18-10
3 ISO TS 15510-2003
X7CrNiNb18-10
4 ISO 9327(-5)-1999
X7CrNiNb18-10 (F51)
5 ISO 4955-1994
X7CrNiNb18-10 (H12)
6 ISO 15510-2014
X7CrNiNb18-10 4912-347-09-I
7 ISO 4955-2016
X7CrNiNb18-10 4912-347-09-I
8 EN 10222-5-2017
X7CrNiNb18-10 1.4912
9 NF EN 10088-1-2005
X7CrNiNb18-10 1.4912

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