55Cr3 1.7176 - EN 10089-2002

Grade	55Cr3
European Standard Steel Grade	1.7176
Corresponding Standard	EN 10089-2002 Hot rolled steels for quenched and tempered springs; technical delivery conditions
Classification	Spring Steel
Properties	High Strength High Elasticity Fatigue Resistance Good Weldability

55Cr3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	More
Minimum Value	0.52	-	0.7	-	-	0.7	Cu+10Sn ±0.60
Maximum Value	0.59	0.4	1	0.025	0.025	1	Cu+10Sn ±0.60

55Cr3 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Bar, rod	+QT	1400~1700	≥1250	≥3	≥20	-	KU ≥5
Rod	+S	-	-	-	-	≤280	-
Bar, rod	+A	-	-	-	-	≤248	-
Bar, rod	+AC	-	-	-	-	≤230	-

55Cr3 Corresponding Standards(Same grade name, different standards)

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