Grade 28Cr4
Germany W-Nr. 1.7030
Corresponding Standard DIN EN 10084-2008
Case hardening steels – Technical delivery conditions
Classification Alloy Steel
28Cr4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value 0.24 - 0.6 - - 0.9
Maximum Value 0.31 0.4 0.9 0.025 0.035 1.2
28Cr4 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Semifinished products, bars Processed to a Certain Shearability (+S) ≤255
All product shapes Soft Annealing (+A) ≤217
Bar, wire, flat steel, forging Processed to a Certain Hardness (+TH) 166~217
Bar, forging Processed to Ferrite-Perlite Structure (+FP) 156~207
New and Old Grade Replacement List
Corresponding Standard Grade
DIN EN 10084-2008
Grade
Germany W-Nr.
DIN EN ISO 683-3-2019
Grade
1 Approximate Comparison Table structural alloy steel
China Taiwan, China Japan South Korea United States Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
30Cr A20302 SCr430 SCr430 SCr430 5130 G51300 28Cr4 1.7030 32C4 30Х 530A30
2 Approximate Comparison Table
China International Organization for Standardization Germany European Standard
GB ISO DIN EN/DIN EN Numerical Grade
28CrH 28Cr4 28Cr4 28Cr4 1.7030

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