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400简介

牌号 400
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
400 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 0.55 1.7 0.04 0.03 0.25 0.3 0.4 0.35 0.04 0.1 0.06 0.1
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
400 机械性能
条件 热处理或状态
抗拉强度
σb
Mpa
屈服点
σs
Mpa
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 ≥480 ≥400 ≥18
板材和底板(地板用花纹板);12 热轧 ≥480 ≥380 ≥18
板材和底板(地板用花纹板);20 热轧 ≥480 ≥360 ≥18
板材和底板(地板用花纹板);80 热轧 ≥480 ≥18
板材和底板(地板用花纹板);150 热轧 ≥17
①For test piece cross-sectional area > 1000 mm2, 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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