C75S 1.1248 - DIN EN 10132-4-2000(+AC:2002)

Grade	C75S
Germany W-Nr.	1.1248
Corresponding Standard	DIN EN 10132-4-2000(+AC:2002) Cold-rolled narrow steel strip for heat treatment-Technical delivery conditions Part 4: Spring steels and other applications (includes Corrigendum AC:2002)
Classification	Spring Steel

C75S Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.7	0.15	0.6	-	-	-	-	-
Maximum Value	0.8	0.35	0.9	0.025	0.025	0.4	0.4	0.1

C75S Mechanical Properties

thickness t mm	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
0.3≤t≤3	C75S A/LC	Annealing (+A) or Annealing and Flattening (+LC)	≤640	≤510	≥15	HV ≤200
0.3≤t≤3	C75S CR	Cold Rolled (+CR)	≤1170			≤320
0.3≤t≤3	C75S QT	Tempering (+QT)	1200~1900			370~580

New and Old Grade Replacement List

Approximate Comparison Table Spring Steel

C75S Corresponding Standards(Same grade name, different standards)

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