P275N Nrụgide Vessel Steel efere

EN10028 P275N ígwè efere // mpempe akwụkwọ, n'okpuru ọkọlọtọ EN, anyị nwere ike na-ele P275N ígwè efere // mpempe akwụkwọ maka boilers na Pressure Vessels steels. efere ígwè na mpempe akwụkwọ nke a na-ejikarị eme ihe maka ụlọ nrụgide na mmiri ọkụ na ọkpọkọ maka mmiri mmiri ọkụ.

N'okpuru ọkọlọtọ EN10028_3, ígwè efere P275N ga-n'okpuru Normalized nnyefe ọnọdụ mgbe nhazi.These ígwè ọkwa P275NH na P275N tumadi ji nrụgide arịa na ji esi mmiri ọkụ dị iche iche si ọzọ carbon_manganese structural ígwè efere nwe ya elu iguzogide nrụgide na niile okpomọkụ mgbe ojiji.

Ihe mejupụtara kemịkalụ P275N
Ọkwa	Ihe kacha (%)
	C	Si	Mn	P	S	Al(min)	N
P275N	0.18	0.40	0.5-1.40	0.030	0.025		0.02
	Cr	Ku	Mo	Nb	Ni	Ti	V
	0.30	0.30	0.08	0.005	0.50	0.03	0.05

Carbon Dakọrọ: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

Ọkwa	P275N-ihe eji arụ ọrụ
	Ọkpụrụkpụ	Mmụba	Ịkwụsị	Ogologo oge	Mmetụta ike (KV J) min
P275N	mm	Min Mpa	Mpa	Min %	-20°	0°	+20°
	≤ 16	275	390-510	24	40	47	55
	16> ruo ≤35	275	390-510	24	40	47	55
	35> ruo ≤50	265	390-510	24	40	47	55
	50> ruo ≤70	255	390-510	24	40	47	55
	70> ruo ≤100	235	370-490	23	40	47	55
	100> ruo ≤150	235	350-470	23	40	47	55