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<span class="headline-content" style="line-height: 24px; display: block; float: left; padding: 0px 8px 0px 5px;">化學(xué)成份</span>20CrNiMoA</h2>
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<span class="headline-content" style="line-height: 24px; display: block; float: left; padding: 0px 8px 0px 5px;"><span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 2em;">碳 C :0.17~0.23</span></span></h2>
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硅 Si:0.17~0.37</div>
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錳 Mn:0.60~0.95</div>
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硫 S :允許殘余含量≤0.035</div>
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磷 P :允許殘余含量≤0.035</div>
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鉻 Cr:0.40~0.70</div>
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鎳 Ni:0.35~0.75</div>
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銅 Cu:允許殘余含量≤0.030</div>
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鉬 Mo:0.20~0.30</div>
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物理性能</div>
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抗拉強(qiáng)度 σb (MPa):≥980(100)</div>
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屈服強(qiáng)度 σs (MPa):≥785(80)</div>
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伸長率 δ5 (%):≥9</div>
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斷面收縮率 ψ (%):≥40</div>
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沖擊功 Akv (J):≥47</div>
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沖擊韌性值 αkv (J/cm2):≥59(6)</div>
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硬度 :≤197HB</div>
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試樣尺寸:試樣毛坯尺寸為15mm</div>
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<span class="headline-1-index" style="width: 25px; height: 24px; line-height: 24px; font-size: 16px; display: block; float: left; margin: 1px 0px 0px; background-color: rgb(81, 156, 234); color: rgb(255, 255, 255); text-align: center; border-top-left-radius: 0px; border-top-right-radius: 2px; border-bottom-right-radius: 2px; border-bottom-left-radius: 0px; background-position: initial initial; background-repeat: initial initial;">4</span><span class="headline-content" style="line-height: 24px; display: block; float: left; padding: 0px 8px 0px 5px;">熱處理</span></h2>
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熱處理規(guī)范:淬火850℃,油冷;回火200℃,空冷。</div>
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交貨狀態(tài):以熱處理(正火、退火或高溫回火)或不熱處理狀態(tài)交貨,交貨狀態(tài)應(yīng)在合同中注明。</div>