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Grade C80U
ISO Numeric Designation 1.1525
Corresponding Standard ISO 4957-2018
Tool steels
Classification Carbon Steel
Density 7.85 g/cm3
C80U Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 0.75 0.1 0.1 - -
Maximum Value 0.85 0.3 0.4 0.03 0.03
C80U Mechanical Properties
Hardness
HBW
Annealed (+A) ≤192
Quenching and Tempering HRC
≥58
1 Approximate Comparison Table Carbon Tool Steel
China Japan International Organization for Standardization European Standard
GB ISC JIS Numerical Grade EN
T8 T00080 SK80 C80U C80U
2 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
SK75
(SK6) 		C80U C80U
(C80W1) 		1.1525 C80U 1.1525
3 Approximate Comparison Table Carbon Tool Steel 1
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS Commercial Grade ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
T8 T00080 SK 6 SK 80 STC 6 W1A-8 C80U C80W2 1.1625 C80U
C80E2U 		У8-1 1778 C80U
C80U Corresponding Standards(Same grade name, different standards)
1 DIN EN ISO 4957-2018
C80U 1.1525
2 EN ISO 4957-2018
C80U 1.1525
3 ISO 4957-2018
C80U 1.1525

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