中文版
Home Material
简体 | 繁體
Grade 20Cr
Brand/Supplier
-> BAOSTEEL
Classification Alloy Steel
20Cr Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value 0.18 0.17 0.4 - - 0.7
Maximum Value 0.24 0.37 0.7 0.015 0.025 1
20Cr Mechanical Properties
product form Heat Treatment or Condition
Hardness
HBW
Hot-rolled steel plate (Baosteel) Hot Rolling HV
≤260
Hot-rolled steel plate (Baosteel) Annealing HV
≤170
Hot-rolled steel plate (Baosteel) Water quenching 820~890°C HRC
≥35
Hot-rolled steel plate (Baosteel) Oil quenching 850~900°C HRC
≥33
Approximate Comparison Table structural alloy steel
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/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
20Cr
20CrH 		A20202 SCr420 SCr420
SCr420H
SCR420HRCH 		SCr420 5120 G51200 20Cr4 20Cr4 1.7027 18C3 20Cr4 1.7027 20Х 527A20
20Cr Corresponding Standards(Same grade name, different standards)
1 GB
20Cr
2 GB /T 3077-1999
20Cr A20202
3 GB /T 17107-1997
20Cr
4 GB /T 3077-2015
20Cr A20202
5 GJB 1220A-2008
20Cr
6 Q/BQB 517-2018
20Cr
7 GB /T 3078-2019
20Cr
8 JB /T 6396-2006
20Cr
9 Q/ASB 234-2018
20Cr
10 JB /T 6908-2020
20Cr A20202
11 GB /T 37601-2019
20Cr
12 ASTM A743/A743M-2021
20Cr A743 CB30 J91803

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!