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Grade X20Cr13
ISO Numeric Designation 4021-420-00-I
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Martensitic Stainless Steel
X20Cr13 Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value 0.16 - - - - 12
Maximum Value 0.25 1 1.5 0.04 0.03 14
X20Cr13 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
t≤16 Annealing ≤910 ≤269
16＜t≤40 Annealing ≤850 ≤252
40＜t≤63 Annealing ≤800 ≤234
63＜t≤160 Annealing ≤760 ≤222
t≤10 Quenching + Tempering (+QT700) 750~1000 ≥600 ≥8
10＜t≤16 Quenching + Tempering (+QT700) 750~1000 ≥550 ≥8
16＜t≤40 Quenching + Tempering (+QT700) 700~950 ≥500 ≥10 ≥25
40＜t≤63 Quenching + Tempering (+QT700) 700~900 ≥500 ≥12 ≥25
63＜t≤160 Quenching + Tempering (+QT700) 700~850 ≥500 ≥13 ≥25
1 Approximate Comparison Table
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 Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13
4
(ISO 683-13-1986) 		4021-420-00-I X20Cr 13 1.4021 Z20C 13 X20Cr 13 1.4021 20Х13 2303 420S37
2 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13 X20Cr 13 1.4021 420F 20
Z20C 13 		X20Cr 13 1.4021 20Х13 420S37
3 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany Sweden
GB ISC JIS ASTM ISO DIN EN/DIN W-Nr. SS
2Cr13 S42023 SUS 420J1 420 X20Cr13 X20Cr13 1.4021 2303
X20Cr13 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X20Cr 13 1.4021
2 EN 10250-4-1999
X20Cr 13 1.4021
3 ISO TS 15510-2003
X20Cr13
4 DIN 17440-1972
X20Cr13 1.4021
5 EN 10088-3-2005
X20Cr 13 1.4021
6 EN 10088-3-2014
X20Cr 13 1.4021
7 GB /T 3098.24-2020
X20Cr13 CH0 402 1-420-00-l
8 ISO 15510-2014
X20Cr13 4021-420-00-I
9 DIN EN 10088-3-2014
X20Cr 13 1.4021
10 ISO 683-18-2014
X20Cr13 4021-420-00-I
11 DIN 17442-1977
X20Cr13 1.4021
12 NF A 35-590-1992
X20Cr13 (Z20C13)
13 NF EN 10088-2-2005
X20Cr13 1.4021
14 NF EN 10088-1-2005
X20Cr13 1.4021
15 IS 6603-2001
X20Cr13
16 DIN EN 10151-2002
X20Cr13 1.4021

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