350L20 - AS /NZS 3678-2016

牌号	350L20
对应标准	AS /NZS 3678-2016 热轧结构钢板、波纹板和厚板 Structural steel - Hot-rolled plates, floorplates and slabs
归类	合金钢

350L20 化学元素成分含量(%)

成分	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	V	Nb	Al	更多
最小值	-	-	-	-	-	-	-	-	-	-	-	-	-	Nb+V+Ti≤0.15；Cr+Ni+Cu+Mo≤1；Ceq≤0.48
最大值	0.22	0.5	1.7	0.04	0.03	0.25	0.3	0.4	0.08	0.04	0.1	0.06	0.1	Nb+V+Ti≤0.15；Cr+Ni+Cu+Mo≤1；Ceq≤0.48

①The use of sulfide modification steelmaking techniques (such as Ca addition) is permitted for listed grades
②For Z25 grades sulfur 0. 008% maximllm. Z35 grades sulfur 0.005% maximum.
③Boron shall not be int entionally added to the steel without the agreement of the purchaser

碳当量计算

350L20 机械性能

条件	热处理或状态	抗拉强度 σ_b	屈服点 σ_s	断后伸长率或延伸率 δ %
板材和底板(地板用花纹板);t≤12	热轧	≥450	≥360	≥20
板材和底板(地板用花纹板);12<t≤20	热轧	≥450	≥350	≥20
板材和底板(地板用花纹板);20<t≤80	热轧	≥450	≥340	≥20
板材和底板(地板用花纹板);80<t≤150	热轧	≥450	≥330	≥20
板材和底板(地板用花纹板);150<t≤200	热轧	≥450	≥320	≥19

①For test piece cross-sectional area > 1000 mm<sup>2</sup>, minimum elongation is reduced by 2%
②Suffix Z added to grade designation indicates that material has been through-thickness tested. Minimum reduction of area: 15% for grade suffix Z15, 25% for grade suffix Z25 and 35% for grade suffix Z35.

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