P265GH, EN 10216-2, Material 1.0425 SMLS

P265GH EN 10216-2, Material 1.0425 SMLS
STEELMAX Steel Story

P265GH와 같이 DIN-EN 규격에서
영어 알파벳 “P”로 나타나면

Pressure를 의미하는 압력과 관련된 강종입니다.
P265GH는 SMLS Tube의 규정이지만… DIN-EN 10216-2.

비슷하게 표기되는 P265NL1, P265NL2 — DIN-EN 10028-3.
표기되는 강종은 Plate에 대한 Steel Grade로 Pipe 와는 차이가 있습니다.

강판에서도 “P”는 Pressure를
P265에서 숫자 “265”는 최소 항복강도를 의미합니다.

Pressure 압력용기용 강재는 높은 온도와 압력을 견디는,
Fully killed steel 로 생산되어 사용되는 강재 입니다.

EN10216-2 Spec은 다음과 같이 규정하고 있습니다.
This European Standard specified the technical delivery conditions
in two test categories foe seamless tubes of circular cross section,
with specified elevated temperature properties, made of non-alloy and alloy steel.

따라서 EN10216 에는 탄소강 SMLS와
합금강 SMLS가 동시에 수록된 규정입니다.

Steel Grade		P265GH, 10216-2	16Mo3
Steel Grade		W.Nr. 1.0425	W.Nr. 1.5415
Chemical Composition (%)	Carbon (C)	0.20 max	0.12~0.20
	Silicon (Si)	0.40 max	0.35 max
	Manganese (Mn)	1.40 max	0.40~0.90
	Phosphorus (P)	0.025 max	0.025max
	Sulfur (S)	0.010 max	0.010 max
	Molybdenum (Mo)	0.08 max	0.25~0.35
	Chromium (Cr)	0.30 max	0.30 max
	Nickel (Ni)	0.30 max	0.30 max
Strength (N/㎟)	Proof	265 min/t≤16	280 min/t≤16
Strength (N/㎟)	Tensile	410~570	450~600
Elongation (%)		23	22

Steel Grade	Minimum proof strength Mpa at a temperature(℃)
Steel Grade	100	150	200	250	300	350	400	450	500
St35.8	226	213	192	171	154	141	134	128	–
16Mo3	243	237	224	205	173	159	156	150	146

※ Creep rupture strength
Stress under which creep rupture occurs in constant
period of time at constant temperature

※ Alloy steel
Steel to which one or more alloy elements are added in order to
improve the properties of steel or to give designated properties.
Although the standards for the contents of alloy elements are
a little different from those ISO 4948-1, according to the classification
by Custom Co-operation Council, the steel of which chemical
composition is contained at least the following contents

※ Killed Steel
Steel sufficiently deoxidized with ferrosilicon, aluminium, and so on.
In the case of ingot casting, during the progress of solidification in a ingot mold,
it is gently solidified without generation of carbon monoxide,
being comparatively uniform, with little segregation and has no blow hole.
however, because of a shrinkage cavity is formed in the centre of upper part,
its yield is low, In the case of continuous casting, it is killed steel and,
comparing with an ingot casting, uniformity and yield better.
killed steel is further classified according to grain size or deoxidizer.