D U51218 - GB 712-2011

Grade	D
China ISC	U51218
Corresponding Standard	GB 712-2011 Ship and Ocean Engineering Structural Steel
Classification	Carbon Steel

D Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Al ^ⓓ
Minimum Value	-	-	0.6	-	-	-	-	-	0.015
Maximum Value	0.21	0.35	-	0.03	0.03	0.3	0.3	0.35	-

D Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
400~520	ReH: ≥235	≥22	-20°C t≤50mm long.: ≥27 tr.: ≥20

• t-thickness；long.-longitudual，tr.-transverse；ReH-upper yield strength
• When the yield is not obvious, Rp0.2 can be measured instead of the upper yield strength.

D Corresponding Standards(Same grade name, different standards)

1	GB 712-2011
	D U51218
2	GB /T 9945-2012
	D
3	IS 1079-2009
	(D) HR2

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