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Yield, Tensile, and Elongation Specifications

Standard	Grade/Class	Yield Stress (N/mm2)	Tensile/Yield Ratio	Elongation A5 (%)	Elongation Agt (%)
BS 4449: 1997	460A	460	1.05	12	2.5
	460B	460	1.08	14	5
BS 4449: 2005	500A	500	1.05	-	2.5
	500B	500	1.08	-	5
	500C	500	1.15 to 1.35	-	7.5

Source

BSI British Standard documentation

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