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1Cr17Ni2系是<a href="http://baike.baidu.com/subview/24758/24758.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">马氏体</a>不锈钢中强度与韧性搭配较好的一种<a href="http://baike.baidu.com/subview/2361732/2361732.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">钢种</a>。它对<a href="http://baike.baidu.com/subview/640909/640909.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">氧化性酸</a>、大部分有机酸以及有机盐类的水溶液有良好的耐蚀性。一般适用于制造<a href="http://baike.baidu.com/view/48841.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">硝酸</a>,醋酸的生产和轻工,纺织等工业中的既要要求强韧性又耐腐蚀的轴,<a href="http://baike.baidu.com/subview/3517404/3517404.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">活塞杆</a>,泵等零件。</div>
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1Cr17Ni2钢是低碳铬镍型<a href="http://baike.baidu.com/view/8979508.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">耐蚀钢</a>, 具有较高的强度和硬度。对氧化性的酸类 (一定温度、浓度的硝酸、大部分的有机酸), 以及有机酸水溶液都有良好的耐蚀性. <a href="http://baike.baidu.com/subview/5640800/5684296.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">亚温淬火</a>能有效地抑制该钢的高温<a href="http://baike.baidu.com/view/145442.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">回火</a>脆性。可以使钢的脆性转化温度降低, 韧性得到改善, 断口形貌由准<a href="http://baike.baidu.com/subview/65006/65006.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">解理</a>型变为韧窝型, 合金元素向基体和δ-<a href="http://baike.baidu.com/subview/7557/7557.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">铁素体</a>中的富集程度增大,在改善钢韧性的同时仍保持较高的强度水平。但该钢焊接性能不好, 易<a href="http://baike.baidu.com/subview/13987157/14561764.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">产生裂纹</a>, 因此制造具时, 不宜进行焊接。<a class="anchor-inline" name="ref_[1]_2847293" style="color: rgb(19, 110, 194); position: relative; display: inline; top: -50px; font-size: 0px; line-height: 0;"> </a>
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<a class="image-link nslog:9317" href="http://baike.baidu.com/picture/2847293/2847293/0/3ac79f3df8dcd1006a4b3fea738b4710b8122f22.html?fr=lemma&ct=single" style="text-decoration: none; color: rgb(19, 110, 194); display: block; width: 220px; height: 148px;" target="_blank" title="1Cr17Ni2"><img alt="1Cr17Ni2" src="http://a.hiphotos.baidu.com/baike/s%3D220/sign=233446748d5494ee8322081b1df7e0e1/3ac79f3df8dcd1006a4b3fea738b4710b8122f22.jpg" style="border: 0px; display: block; margin: 0px auto; width: 220px; height: 148px;" /></a><span class="description" style="display: block; color: rgb(85, 85, 85); font-size: 12px; font-family: 宋体; word-wrap: break-word; word-break: break-all; line-height: 15px; padding: 8px 7px; min-height: 12px; border-top-width: 1px; border-top-style: solid; border-top-color: rgb(224, 224, 224);">1Cr17Ni2</span></div>
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当锻造加热温度较高时, 虽然钢的α-相增多, 但塑性良好, 这与部分组织强烈的<a href="http://baike.baidu.com/subview/533282/533282.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">再结晶</a>有关。该钢在1100°C时的<a href="http://baike.baidu.com/subview/499391/499391.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">伸长率</a>最大。为了改善钢的<a href="http://baike.baidu.com/view/337753.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">塑性</a>和表面质量, 应使停锻、停轧温度偏高一些; 同时, 为了得到均一的组织, 应该采取较大的<a href="http://baike.baidu.com/subview/2948133/2948133.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">锻造比</a>。<span style="background-color: rgb(81, 156, 234); color: rgb(255, 255, 255); font-size: 16px; line-height: 24px; text-align: center; font-family: 'Microsoft YaHei', SimHei, Verdana;">2</span></div>
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化学成分:</div>
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<a href="http://baike.baidu.com/view/23998.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">碳</a> C :0.11~0.17</div>
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<a href="http://baike.baidu.com/subview/4748/5033687.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">硅</a> Si:≤0.80</div>
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<a href="http://baike.baidu.com/view/37938.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">锰</a> Mn:≤0.80
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<a class="image-link nslog:9317" href="http://baike.baidu.com/picture/2847293/2847293/0/8605f5f8250ba94ad9f9fdaa.html?fr=lemma&ct=single" style="text-decoration: none; color: rgb(19, 110, 194); display: block; width: 220px; height: 165px;" target="_blank" title="1Cr17Ni2马氏体不锈钢"><img alt="1Cr17Ni2马氏体不锈钢" src="http://h.hiphotos.baidu.com/baike/s%3D220/sign=c9448bc8a9773912c0268263c8198675/3c6d55fbb2fb43165265b70f20a4462309f7d349.jpg" style="border: 0px; display: block; margin: 0px auto; width: 220px; height: 165px;" /></a><span class="description" style="display: block; color: rgb(85, 85, 85); font-size: 12px; font-family: 宋体; word-wrap: break-word; word-break: break-all; line-height: 15px; padding: 8px 7px; min-height: 12px; border-top-width: 1px; border-top-style: solid; border-top-color: rgb(224, 224, 224);">1Cr17Ni2马氏体不锈钢</span></div>
硫 S :≤0.030</div>
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<a href="http://baike.baidu.com/view/39167.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">磷</a> P :≤0.035</div>
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<a href="http://baike.baidu.com/view/39052.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">铬</a> Cr:16.00~18.00</div>
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<a href="http://baike.baidu.com/view/38977.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">镍</a> Ni:1.50~2.50</div>
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力学性能:</div>
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<b>热处理规范及金相组织</b></div>
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热处理规范:1)退火,680~700℃<a href="http://baike.baidu.com/subview/543204/543204.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">高温回火</a>空冷;2)淬火,950~1050℃油冷;3)<a href="http://baike.baidu.com/subview/145442/14383113.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">回火</a>275~350℃空冷。</div>
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金相组织:组织特征为<a href="http://baike.baidu.com/subview/560376/560376.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">马氏体型</a>。</div>
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●<a href="http://baike.baidu.com/subview/2751764/2751764.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">交货状态</a>:一般以热处理状态交货,其热处理种类在合同中注明;未注明者,按不热处理状态交货。</div>
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<span style="font-size: 14px; line-height: 24px; text-indent: 2em;">对应日本牌号:</span><a href="http://baike.baidu.com/subview/6522006/6639102.htm" style="font-size: 14px; line-height: 24px; text-indent: 2em; text-decoration: none; color: rgb(19, 110, 194);" target="_blank">SUS431</a></div>
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对应德国牌号:X22CrNi17</div>
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对应美国牌号:431</div>
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对应英国牌号:431S29</div>
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物理性能:</div>
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1)<a href="http://baike.baidu.com/subview/158821/158821.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">临界点</a>温度 (近似值):Ac1=810°C、 Ar1=780°C、Ms=357°C。<br />
2)<a href="http://baike.baidu.com/view/38960.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">密度</a>:7.75g/cm3<br />
3)质量定压<a href="http://baike.baidu.com/subview/732601/732601.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">热容</a>: 459.8J/ (kg·K)。<br />
4)<a href="http://baike.baidu.com/view/30660.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">弹性模量</a> (20°C): 210000MPa。<br />
5)<a href="http://baike.baidu.com/subview/42894/42894.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">电阻率</a>: 0.70×10-6Ω·m<br />
6)<a href="http://baike.baidu.com/view/825014.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">线胀系数</a>: 温度20-100°C /20~200°C/20~300°C/20~400°C/20~500°C, 线胀系数: 10.0×10-6K-1/10.0×10-6K-1/11.0×10-6K-1/11.0×10-6K-1/11.0×10-6K-1。<br />
7) <a href="http://baike.baidu.com/view/748593.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">热导率</a>: 温度 20°C/100°C/200°C/300°C /400°C/500°C/600°C/700°C/800°C /900°C, 热导率20.9[w/(m·K)]/21.7[w/(m·K)]/22.6[w/(m·K)]/23.4[w/(m·K)]/24.2[w/(m·K)]/25.1[w/(m·K)]/25.9[w/(m·K)]/26.7[w/(m·K)]/28.0[w/(m·K)]/29.7[w/(m·K)]。</div>