S355NL Round-Bar, -50℃, Low-Temperature Steel

S355NL Round-Bar, -50℃, Low-Temperature Steel
STEELMAX Steel Story

S355NL Bar (환봉)은 , DIN-EN 규격의
저온용 강재에 대한 Steel Symbol 입니다.

주로 Plate 로, 공급하지만,
환봉 (Round-Bar)을 사용하는 환경에도 사용합니다.

-50℃ 에서 노치 Impact Test 조건의 자재입니다.
S355NL Bar 강재가 -50℃ 이고

S355J2 는 -20℃ CVN 조건이니, 저온 온도 차이가 큽니다
S355NL 강재는 EN 10025-3 규정의 강재로

S355NL, minimum values of impact energy at
temperature not lower than -50℃.

EN 10025-3 : Hot rolled products of structural steels
Part 3 : Technical delivery conditions for normalized/normalized rolled
weldable fine grain structural steels.

S355NL 은 현재 사용하고 있는 Steel Designation 이고
이전 사용 Designation 은, TStE355 입니다.

※ Normalizing rolling
Rolling process in which the final deformation is carried out in a certain temperature range
leading to a material condition equivalent to that obtained after normalizing so that the specified
values of the mechanical properties are retained even after normalizing.

S355NL, 1.0546, DIN-EN 10025-3
Chemical composition(%)		Yield strength (MPa, min)		Tensile strength (MPa, min)
Carbon (C)	0.18 max	≤16	355	≤100	470~630
Silicon (Si)	0.50 max	16＜t≤40	345	100＜t≤200	450~600
Manganese (Mn)	0.60~1.65	40＜t≤63	335	200＜t≤250	450~600
Phosphorus (P)	0.025 max	63＜t≤80	325	CEV (%, min)
Sulfur (S)	0.020 max	80＜t≤100	315	≤63	0.43
Niobium (Nb)	0.05 max	100＜t≤150	295	63＜t≤100	0.45
Vanadium (V)	0.12 max	150＜t≤200	285	100＜t≤250	0.45
Al total min.	0.02 min	200＜t≤250	275	CVN (joule, min)
Titanium (Ti)	0.05 max	Elongation (%, mi)		+20℃	63
Chromium (Cr)	0.30 max	≤16	22	0℃	55
Nickel (Ni)	0.50 max	16＜t≤40	22	-10℃	51
Molybdenum (Mo)	0.10 max	40＜t≤63	22	-20℃	47
Copper (Cu)	0.55 max	63＜t≤80	21	-30℃	40
Nitrogen (N)	0.015 max	80＜t≤200	21	-40℃	31
Ladle analysis		200＜t≤250	21	-50℃	27