本文目录一览:
- 1、q235b是什么材质的钢材
- 2、Q235B是什么材质?
- 3、Q235 B相当于什么材质
- 4、q235b是什么材质,简单点回答到底是铁 还是钢呀?不要讲太多是什么成分,不懂
q235b是什么材质的钢材
q235b表示屈服点(σs)为235MPa的半镇静碳素结构钢。“Q”,代表钢材的屈服点,后面的数字表示屈服点数值,单位是MPa例如Q235表示屈服点(σs)为235MPa的碳素结构钢。②必要时钢号后面可标出表示质量等级和脱氧 *** 的符号。质量等级符号分别为A、B、C、D。脱氧 *** 符号:F表示沸腾钢;b表示半镇静钢;Z表示镇静钢;TZ表示特殊镇静钢。
钢:
钢是对含碳量质量百分比介于0.02%至2.11%之间的铁碳合金的统称。钢的化学成分可以有很大变化,只含碳元素的钢称为碳素钢(碳钢)或普通钢;在实际生产中,钢往往根据用途的不同含有不同的合金元素,比如:锰、镍、钒等等。人类对钢的应用和研究历史相当悠久,但是直到19世纪贝氏炼钢法发明之前,钢的制取都是一项高成本低效率的工作。如今,钢以其低廉的价格、可靠的性能成为世界上使用最多的材料之一,是建筑业、制造业和人们日常生活中不可或缺的成分。可以说钢是现代社会的物质基础。
Q235B是什么材质?
Q235是碳素结构钢,等级是B级,
化学成分质量分数%|C:
0.09~0.15
化学成分质量分数%|Mn:
0.25~0.55
化学成分质量分数%|Si≤:
0.30
化学成分质量分数%|S≤:
0.045
化学成分质量分数%|P≤:
0.045
Q235 B相当于什么材质
Q235B的钢材相当的材质是Q235A的钢材。
由Q+数字+质量等级符号+脱氧 *** 符号组成。它的钢号冠以“Q”,代表钢材的屈服点,后面的数字表示屈服点数值,单位是MPa例如Q235表示屈服点(σs)为235 MPa的碳素结构钢。
必要时钢号后面可标出表示质量等级和脱氧 *** 的符号。质量等级符号分别为A、B、C、D。
脱氧 *** 符号:F表示沸腾钢;b表示半镇静钢;Z表示镇静钢;TZ表示特殊镇静钢,镇静钢可不标符号,即Z和TZ都可不标。例如Q235-AF表示A级沸腾钢。
扩展资料
合金结构钢
钢号开头的两位数字表示钢的碳含量,以平均碳含量的万分之几表示,如40Cr。
钢中主要合金元素,除个别微合金元素外,一般以百分之几表示。当平均合金含量1.5%时,钢号中一般只标出元素符号,而不标明含量,但在特殊情况下易致混淆者,在元素符号后亦可标以数字“1”;
例如钢号“12CrMoV”和“12Cr1MoV”,前者铬含量为0.4-0.6%,后者为0.9-1.2%,其余成分全部相同。当合金元素平均含量≥1.5%、≥2.5%、≥3.5%时,在元素符号后面应标明含量,可相应表示为2、3、4等。例如18Cr2Ni4WA。
钢中的钒V、钛Ti、铝AL、硼B、稀土RE等合金元素,均属微合金元素,虽然含量很低,仍应在钢号中标出。例如20MnVB钢中。钒为0.07-0.12%,硼为0.001-0.005%。
参考资料:百度百科-Q235B
q235b是什么材质,简单点回答到底是铁 还是钢呀?不要讲太多是什么成分,不懂
q235b是钢,不是铁。
它的钢号冠以“Q”,代表钢材的屈服点,后面的数字表示屈服点数值,单位是MPa例如Q235表示屈服点(σs)为235
MPa的碳素结构钢。
q235b的执行标准是《GB/T
700-2006
碳素结构钢》,这也证明了是钢。
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