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S275M簡介

牌號	S275M
歐標(biāo)鋼號	1.8818
對應(yīng)標(biāo)準(zhǔn)	EN 10025-4-2019 熱機(jī)械軋制可焊接細(xì)晶粒結(jié)構(gòu)鋼 Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels
歸類	合金鋼

S275M 化學(xué)元素成分含量(%)

成分	C ^④	Si	Mn	P ^①	S ^①②	Cr	Ni	Cu	Mo	N	Ti	V	Nb	Al ^③
最小值	-	-	-	-	-	-	-	-	-	-	-	-	-	0.02
最大值	0.13	0.5	1.5	0.025	0.025	0.3	0.3	0.55	0.1	0.015	0.05	0.08	0.05	-

① For long products the P and S content can be 0.005% higher.
② For some applications, e.g. for railways, a maximum S content of 0,010 % may be agreed upon at the time of the order.
③ If sufficient other N-binding elements are present the minimum total Al content does not apply.
④ For long products a maximum C content of 0,15 % for grade S275. 碳當(dāng)量計算

S275M 機(jī)械性能

厚度 t mm	抗拉強(qiáng)度 σ_b Mpa	屈服點 σ_s Mpa	斷后伸長率或延伸率 δ %
t≤16	370~530	≥275	≥24
16＜t≤40	370~530	≥265	≥24
40＜t≤63	360~520	≥255	≥24
63＜t≤80	350~510	≥245	≥24
80＜t≤100	350~510	≥245	≥24
100＜t≤150	350~510	≥240	≥24