WYJ521-2009 X65(ST) Steel Plate factory

Adopt standard: WYJ521-2009
Steel Plate X65(ST) Thickness tolerance: +/-1.52mm
Flatness: 4mm/m
Surface shot blasting or peeled.

The technical conditions apply to plates of X65(ST) with thickness not more than 55mm.

X65(ST) steel plate Chemical composition：

	C	Si	Mn	P	S	Cr	Mo
Max	0.12	0.35	1.6	0.015	0.010	0.20	0.30
	Ni	Nb	V	Cu	B	Ceq	Pcm
Max	0.30	0.05	0.05	0.20	0.001	0.21

Note: Cu+Cr+Ni+Mo≤1%
Steel making process: EAF+LF/VD
Carbon equivalent (CEq) no more than 0.21

X65(ST) Mechanical properties:

Size	Mechanical properties				Lateral expansion	Hardness test
mm	Mechanical properties				Lateral expansion	1/4 T
	Yield strength MPa	Tensile strength MPa	Section shrinkage ratio %	Elongation %	mm	HV10
8-50	Min 460	Min535		Min 17		Max265

Charpy V impact test X65(ST:

	Charpy V impact test
Grade	Temperature	value
X60(ST)	-30℃	average	Min60

X65(ST) steel Application:
Standard Specification for X65(ST) for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries