Qhov sib txawv ntawm P275NL2 thiab P355NL2 steel phaj

Jan 22, 2026 Tso lus

P275NL2 thiab P355NL2 yog cov European (EN 10028-3) zoo-cov qauv hlau rau cov hlab ntsha siab, nrog 'P' rau siab, tus lej rau lub zog, thiab 'NL2' qhia txog normalization thiab tsis tshua muaj kub cuam tshuam toughness mus rau -50℃, ua kom muaj zog ntau dua li ntawm P35 P275NL2, ob leeg khoom plig rau weldability hauv boilers, tank, thiab kav.

Tshuaj muaj pes tsawg leeg

P275NL2 tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al (min)	N
P275 NL 2	0.16	0.40	0.5-1.40	0.025	0.015		0.02
	Cr	Cu	Mo	Nb	Ni	Ti	V
	0.30	0.30	0.08	0.005	0.50	0.03	0.05

P355NL2 tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
Qib	C	Si	Mn	P	S	Al (min)	N
P355 NL 2	0.18	0.50	0.9-1.70	0.025	0.015		0.02
	Cr	Cu	Mo	Nb	Ni	Ti	V
	0.30	0.30	0.08	0.005	0.50	0.03	0.10

Mechanical Property

Qib		P275 NL 2Mechanical Property
Qib	Thickness	Yield	Tensilmie	Elongation	Impact Zog (KV J) min
P275 NL 2	mm	Min Mpa	Mpa	Tsawg%	-20 degree	0 degree	+20 degree
	Tsawg dua los yog sib npaug li 16	275	390-510	24	65	90	100
	16>los tsawg dua los yog sib npaug li 35	275	390-510	24	65	90	100
	35>kom tsawg dua los yog sib npaug li 50	265	390-510	24	65	90	100
	50>los tsawg dua los yog sib npaug li 70	255	390-510	24	65	90	100
	70>kom tsawg dua los yog sib npaug li 100	235	370-490	23	65	90	100
	100>los tsawg dua los yog sib npaug li 150	235	350-470	23	65	90	100

Qib		P355 NL 2Mechanical Property
Qib	Thickness	Yield	Tensilmie	Elongation	Impact Zog (KV J) min
P355 NL 2	mm	Min Mpa	Mpa	Tsawg%	-20 degree	0 degree	+20 degree
	Tsawg dua los yog sib npaug li 16	355	490-630	22	65	90	100
	16>los tsawg dua los yog sib npaug li 35	355	490-630	22	65	90	100
	35>kom tsawg dua los yog sib npaug li 50	345	490-630	22	65	90	100
	50>los tsawg dua los yog sib npaug li 70	325	490-630	22	65	90	100
	70>kom tsawg dua los yog sib npaug li 100	315	470-610	21	65	90	100
	100>los tsawg dua los yog sib npaug li 150	295	450-590	21	65	90	100

Qhov tseem ceeb sib txawv & Zoo sib xws

Standard: Ob leeg poob rau hauv EN 10028-3, tus qauv rau weldable fine-grain steels rau cov khoom siv siab.

Lub zog: P355NL2 muaj qhov siab tshaj tawm lub zog (355 MPa) dua li P275NL2 (275 MPa), ua rau nws muaj zog thiab haum rau kev ntxhov siab ntau dua.

Toughness: Qhov kev xaiv 'NL2' txhais tau hais tias ob qho tib si tawv ntawm qhov kub thiab txias, tshwj xeeb cuam tshuam rau -50 degree.

Daim ntaub ntawv: Siv rau cov hlab ntsha siab, boilers, tso tsheb hlau luam, thiab cov kav dej, nrog P355NL2 nyiam rau qhov chaw txias dua vim nws muaj zog dua.