GJB 2721-1996 武器和车辆用热轧环件规范
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2E3AF4669387409190E923A5DBD863ED |
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0.99 |
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19 |
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2024-7-14 |
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添瀛1 吟一一二 、冒,中华人民共和国国家军用标准,FL9510 GJB 2721 -96,武器和车辆用热轧环件规范,Specification for hot rolled ring$ for weapon and vehicle,1996-10 - 03 发布1997-05-01 实施,国防科学技术工业委员会批准,中华人民共和国国家军用标准,武器和车辆用热轧环件规范,Speafkation fiw hot rolled rh^s Ah* weapon and vdude GJB2721 -96,1范围,1.1 主题内容,本规范规定了武器和车辆用热轧环件（以下简称环件）的要求、质量保证规定、交货准备,等,1.2 适用范围,本规范适用于武器和车辆用优质碳素结构钢、合金结构钢、合金工具钢热轧环件,2引用文件,GB 222 - 84钢的化学分析用试样取样法及成品化学成分允许偏差,GB 226-81钢的低倍组织及缺陷酸蚀检验法,GB 228-87金属拉伸试验方法,GB/T 229-94金属夏比缺口冲击试验方法,GB231-84金属布氏硬度试验方法,GB 1814-79钢材断口检验法,GB 2975 - 82钢材力学及工艺性能试验取样规定,GB 6397 - 86金属拉伸试验试样,GB10561 - 89钢中非金属夹杂物显微评定方法,YB/T514B-93金属平均晶粒度测定法,钢铁及合金中各元素的化学分析试验方法见附录A（补充件）,3要求,3.1 冶炼方法,环件用钢由平炉、转炉或电炉冶炼，需方有特殊要求，应在合同中注明,3.2 牌号及化学成分,3.2.1 钢的睥号及化学成分（熔炼分析）应符合表1的规定.,3.2.2 环件的化学成分允许偏差应符合GB 222的规定,国防科学技术工业委员会1996- 10-03发布1997-05-01 实施,1,GJB2721-96,表1,序钢,牌号,化学成分，%,号类C Si Mn Mo Cr Ni S P Cu,1 20,0.17,0.24,0.17,0.37,0.35,0.65,—— W,0.25,w,0.25,w,0.035,W,0.035,w,0.25,2,优,质,碳,25,0.22,0.30,0.17,037,0.50,0.80,—,0.25,w,0.25,w,0.035,W,0.035,w,0.25,3 30,0.27,0.35,0.17,0.37,0.50,0.80,—— W,0.25,w,0.25,w,0.035,w,0.035,w,0.25,4,素,结,构,35,0.32,0.40,0.17,0.37,0.50,0.80,—— W,0.25,w,0.25,W,0.035,W,0.035,W,0.25,5 40,037,0.45,0i17,0,37,0.50,0,80,—— W,0.25,W,0.25,W,0.035,W,0.035,W,0.25,6,钢,45,0.42,0.50,0.17,0.37,0.50,0.80,—— W,0.25,w,0.25,w,0.035,w,0.035,W,0.25,7 50,0.47,0.55,0.17,0.37,0.50,0.80,— W,0.25,w,0.25,於,0.035,W,0.035,W,0.25,8 50Mn,0.48,0.56,0.17,0.37,0.70,1.00,—— W,0.25,标,0.25,这,0.035,W,0.035,W,0.25,9 60Mn,0.57,0.65,0.17,0.37,0.70,1.00,—— W,0.25,W,0.25,w,0.035,W,0.035,W,0.25,10 50Z,0.47,0.55,0.17,0.37,0.50,0.80,—,0J5,0.35,0.15,0.40,W,0.035,W,0.035,w,0.25,2,GJB2721 -96,续表1,序,号,钢,类,牌号,化学成分，%,C Si Mn Mo Gr Ni S P Cu,11,合,金,结,构,钢,PCiMo,0.32,0.42,0.17,0.37,0.25,0.50,0.20,0.30,0.90,1.30,W,0.50,w,0.030,w,0.030,这,0.20,12 PCrNilMo,0.32,0.42,0.17,0.37,0.25,0.50,0.20,0.30,1.30,1.70,1.30,1.70,w,0.030,W,0.030,W,0.20,13 PCiNBMo,0.32,0.42,0.17,0.37,0.25,0.50,0.20,0.30,0.80,1.20,2.75,3.25,w,0.030,w,0.030,这,0.20,14 4OCr,0.37,0.44,0.17,0.37,0.50,0.80,——,0.80,1.10,W,0.30,w,0i035,这,0.035,w,0.25,15 45CrNi,0.42,0.49,0J7,0.37,0.50,0.80,—,0.45,0.75,LOO,1.40,W,0.035,这,0.035,w,0.25,16,合,金,工,具,钢,5CritfnMo,0.50,0.60,0.25,0.60,1.20,1.60,0.15,0.30,0.60,0.90,— W,0,030,W,0.030,——,17 5CiNiMo,0.50,0.60,W,0.40,0.50,0.80,0.15,0.30,0.50,0.80,1.40,1.80,w,0.030,w,0.030,——,3.2.3 由供需双方协商，可供应表1中未列出牌号的环件,3.3 交货状……
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