DIN17155 HII steel

HII is a kind of boiler and pressure vessel steel under the standard DIN17155. For DIN17155 HII, in addition to ensure normal temperature performance, but also to ensure that the high temperature mechanical properties. HII is suitable for steam boiler equipment, high working temperature of the pressure vessel and similar structures.

DIN17155 HII equivalent materials:

HII DIN 17155 Number:1.0425	equivalent materials
	EN 10028-2	P265GH
	NFA 36-205	A 42 CP
	UNI 5869	Fe 410-1KW
	BS 1501	161 Gr.400/164 Gr.400/224 Gr. 400
	UNE 36087	A 42 RCI
	ASTM	A 414 Gr. E / A 516 Gr. 60
	JIS G3115	-

DIN17155 HII steel Chemical Composition %

Grade

S max

Ti max

P max

Cr.

Mo.

HII

≤0.20

0.5-1.3

0.03

≤0.012

≤0.30

≤0.01

0.03

≤0.35

0.035

≤ 0.020

≤0.25

≤0.10

≤0.30

≤0.03

DIN17155 HII steel Mechnical Properties:

Grade	Type	Thickness mm	Yield strength Mpa(min)	Tensile Strength MPa	Elongation % (min)	Impact Energy (KVJ) (min)
Grade	Type	Thickness mm	Yield strength Mpa(min)	Tensile Strength MPa	Elongation % (min)	-20°	0°	+20
HII	Normalized	≤16	265	410-530	22	27	34	40
		16>to≤40	255	410-530	22	27	34	40
		16>to≤40	245	410-530	22	27	34	40
		16>to≤40	215	410-530	22	27	34	40
		100>to≤150	200	400-530	22	27	34	40
		100>to≤150	185	390-530	22	27	34	40

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