4J128 4J28 - GB /T 37797-2019

Grade	4J128
Old Grade
Corresponding Standard	GB /T 37797-2019 Precision Alloys—Designation
Classification	Alloy Steel

4J128 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	N	More
Minimum Value	-	-	-	-	-	27	-	-	Fe:余量
Maximum Value	0.12	0.7	1	0.02	0.02	29	0.5	0.2	Fe:余量

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