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Grade X8CrNi25-21
ISO Numeric Designation 4845-310-08-E
Corresponding Standard ISO 4955-2016
Heat-Resistant Steels
Classification Alloy Steel
Properties Corrosion Resistance
X8CrNi25-21 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - - - - 24 19 -
Maximum Value 0.1 1.5 2 0.045 0.015 26 22 0.1
X8CrNi25-21 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
flat products, 0.5≤t＜3 Solid Solution Annealing (+AT) 500~700 ≥210 ≥33 ≤192
flat products, 3≤t≤75 Solid Solution Annealing (+AT) 500~700 ≥210 ≥35 ≤192
Section steel, 5 ≤ d ≤ 160 Solid Solution Annealing (+AT) 500~700 ≥210 ≥35 ≤192
Bars and Profiles, 1.5≤d≤25 Solid Solution Annealing (+AT) 500~700 ≥210 ≥35 ≤192
Forgings, d≤100 Solid Solution Annealing (+AT) 500~700 ≥210 ≥35 ≤192
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 Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr25Ni20
(0Cr25Ni20)
1Cr25Ni20Si2 		S31008 310S SUS 310S STS 310S 310S S31008 X8CrNi 25-21 X12CrNi 25-21
X8CrNi 25-21 		1.4845
1.4845 		Z12CN 25-20 X8CrNi 25-21 1.4845 ~08Х23Н18 2361 304S24
X8CrNi25-21 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X8CrNi 25-21 1.4845
2 ISO 4955-2005
X8CrNi25-21
3 EN 10296-2-2005
X8CrNi25-21 1.4845
4 DIN EN 10095-2018
X8CrNi25-21 1.4845
5 ISO 15510-2014
X8CrNi25-21 4845-310-08-E
6 ISO 4955-2016
X8CrNi25-21 4845-310-08-E
7 NF EN 10088-1-2005
X8CrNi25-21 1.4845
8 NF EN 10296-2-2005
X8CrNi25-21 1.4845
9 DIN EN 10296-2-2006
X8CrNi25-21 1.4845

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