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Home Material GB /T 24511-2017
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Grade 07Cr18Ni11Nb
China ISC S34779
Corresponding Standard GB /T 24511-2017
Stainless steel and heat resisting steel plate, sheet and strip for pressure equipments
Classification Austenitic Stainless Steel
Density 8 g/cm3
07Cr18Ni11Nb Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni More
Minimum Value 0.04 - - - - 17 9 Nb:8C~1
Maximum Value 0.1 0.75 2 0.035 0.015 19 12
07Cr18Ni11Nb Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Steel: Solid Solution Treatment ≥515 Rp0.2：≥205 ① ≥40
②		 HBW：≤201
HRB：≤92
HV：≤210
1 Approximate Comparison Table
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
2 Approximate Comparison Table Seamless steel tubes and pipes for high pressure boiler
China United States European Standard
GB ISC ASTM/AISI EN
07Cr18Ni11Nb S34779 SA-213 TP347H X7CrNiNb18-10
07Cr18Ni11Nb Corresponding Standards(Same grade name, different standards)
1 GB /T 20878-2007
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
2 GB /T 3280-2015
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
3 GB /T 4238-2015
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
4 GB 5310-2008
07Cr18Ni11Nb
5 GB /T 5310-2017
07Cr18Ni11Nb
6 GB /T 4237-2015
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
7 GB /T 14975-2012
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
8 GB /T 14976-2012
07Cr18Ni11Nb S34779 (1Cr19Ni11Nb)
9 GB /T 12771-2019
07Cr18Ni11Nb S34779
10 GB /T 24511-2017
07Cr18Ni11Nb S34779
11 GB /T 5310-2023
07Cr18Ni11Nb S34779
12 GB /T 20878-2024
07Cr18Ni11Nb S34779

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