C80S 1.1284 - EN 10132-2021

Grade	C80S
European Standard Steel Grade	1.1284
Corresponding Standard	EN 10132-2021 Cold Rolled Narrow Steel Strip for Heat Treatment - Technical Delivery Conditions
Classification	Spring Steel

C80S Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	0.75	0.1	0.3	-	-	-	-	-	-	Cr+Mo+Ni≤0.63
Maximum Value	0.85	0.35	0.7	0.025	0.025	0.4	0.4	0.3	0.1	Cr+Mo+Ni≤0.63

① 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 manufacture, of such elements which affect the hardenability, mechanical properties and application.

C80S Mechanical Properties

Delivery condition*	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
annealed (+A) or annealed and skin passed(+LC)	≤660	≤525	≥15	HV ≤205
cold rolled(+CR)**	≤1180			HV ≤325
quenched and tempered(QT)***	1200~1950			HV 370~590

• The elongation values in the table are for a gauge length of 80 mm.
• +A=annealed，+LC=annealed and skin passed，+CR=cold rolled，+QT=quenched and tempered

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