<p>1. 溶于铁中 　　几乎所有的合金元素（除Pb外）都可溶入铁中, 形成合金铁素体或合金奥氏体, 按其对α-Fe或γ-Fe的作用, 可将合金元素分为扩大奥氏体相区和缩小奥氏体相区两大类。 　　扩大γ相区的元素—亦称奥氏体稳定化元素, 主要是Mn、Ni、Co、C、N、Cu等, 它们使A3点(γ-Fe α-Fe的转变点)下降, A4点( γ-Fe的转变点)上升, 从而扩大γ-相的存在范围。其中Ni、Mn等加入到一定量后, 可使γ相区扩大到室温以下, 使α相区消失, 称为完全扩大γ相区元素。另外一些元素(如C、N、Cu等), 虽然扩大γ相区, 但不能扩大到室温, 故称之为部分扩大γ相区的元素。 　　缩小γ相区元素——亦称铁素体稳定化元素, 主要有Cr、Mo、W、V、Ti、Al、Si、B、Nb、Zr等。它们使A3点上升, A4点下降(铬除外, 铬含量小于7%时, A3点下降; 大于7%后,A3点迅速上升), 从而缩小γ相区存在的范围, 使铁素体稳定区域扩大。按其作用不同可分为完全封闭γ相区的元素(如Cr、Mo、W、V、Ti、Al、Si等)和部分缩小γ相区的元素(如B、Nb、Zr等)。</p> <p>不锈钢无缝管 304 φ32*2 温州 23100 0 0 0 <br /> 不锈钢无缝管 304 φ45*3-4 温州 22800 0 0 0 <br /> 不锈钢无缝管 304 φ57*3-4 温州 22800 0 0 0 <br /> 不锈钢无缝管 304 φ76*4-6 温州 22800 0 0 0 <br /> 不锈钢无缝管 304 φ89*4-5 温州 22800 0 0 0 <br /> 不锈钢无缝管 304 φ108*4-5 温州 23800 0 0 0 </p> <p>公司以良好的信誉、优质的产品、雄厚的实力、低廉的价格享誉全国30多个省、市、自治区、直辖市，产品深得用户依赖。</p> <p>主营材质:10#、20#、35#、45#、20G、40Cr、20Cr、16Mn-45Mn、27SiMn、Cr5Mo、12CrMo(T12)、12Cr1MoV、12Cr1MoVG、10CrMo910、 15CrMo、35CrMo、<a style="word-spacing:0px;font:medium Simsun;text-transform:none;text-indent:0px;white-space:normal;letter-spacing:normal;background-color:#ffffff;orphans:2;widows:2;webkit-text-size-adjust:auto;webkit-text-stroke-width:0px;" href="http://www.tjwffg.com/">厚壁方管</a><span style="display:inline! 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important;float:none;word-spacing:0px;font:medium Simsun;text-transform:none;color:#000000;text-indent:0px;white-space:normal;letter-spacing:normal;background-color:#ffffff;orphans:2;widows:2;webkit-text-size-adjust:auto;webkit-text-stroke-width:0px;">、<span class="Apple-converted-space">&nbsp;</span></span><a style="word-spacing:0px;font:medium Simsun;text-transform:none;text-indent:0px;white-space:normal;letter-spacing:normal;background-color:#ffffff;orphans:2;widows:2;webkit-text-size-adjust:auto;webkit-text-stroke-width:0px;" href="http://www.fpipe.cn/">无缝方管</a><span style="display:inline! important;float:none;word-spacing:0px;font:medium Simsun;text-transform:none;color:#000000;text-indent:0px;white-space:normal;letter-spacing:normal;background-color:#ffffff;orphans:2;widows:2;webkit-text-size-adjust:auto;webkit-text-stroke-width:0px;">、</span>40CrMo等。<br /> 我公司现有大量合金管、高压管现货，将以优惠的价格，批零兼营的方式，为您提供快捷优质的服务，欢迎新老客户惠顾、洽谈。 </p>