C70U 1.1520 - DIN EN ISO 4957-2018

Grade	C70U
Germany W-Nr.	1.1520
Corresponding Standard	DIN EN ISO 4957-2018 Tool steels
Classification	Carbon Steel
Density	7.85 g/cm³

C70U Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.65	0.1	0.1	-	-
Maximum Value	0.75	0.3	0.4	0.03	0.03

• Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat . All reasonable precautions shall be taken to prevent the addition from scrap or other material used in the manufacture, of such elements which affect the hardenability, mechanical properties and applicability.

C70U Mechanical Properties

	Hardness HBW
Annealed (+A)	≤183
Quenching and Tempering	HRC ≥57

New and Old Grade Replacement List

Corresponding Standard	Grade
DIN 17350-1980	Grade Germany W-Nr.
DIN EN ISO 4957-2018	Grade Germany W-Nr.

Approximate Comparison Table Non-alloy cold-work tool steels

Japan	International Organization for Standardization	Germany		European Standard
JIS	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
SK65 (SK7)	C70U	C70U (C70W2)	1.1520 (1.1620)	C70U	1.1520

C70U Corresponding Standards(Same grade name, different standards)

1	DIN EN ISO 4957-2018
	C70U 1.1520
2	EN ISO 4957-2018
	C70U 1.1520
3	ISO 4957-2018
	C70U 1.1520

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