一般工业用铝及铝合金锻件 YST 479-2005.pdf

YS/T 479-2005表1（续）供应状态牌号模锻件自由锻件6066T66151T67049T73T73T73527050T74T74527075T6、T73、T7352T6、T652、T73、T73527175T74、T7452、T7454T74、T74523.2化学成分2025、6066、6151、7049、7175合金的化学成分应符合表2规定，其他牌号的产品化学成分应符合GB/T3190的规定。表2化学成分（质量分数）/%牌号其他SiFeCuMnMgCrZnTiAI单个合计20250.501.21.03.95.00.401.20.050.100.250.150.050.15余量60660.91.80.500.71.20.61.10.81.40.400.250.200.050.15余量61510.61.21.00.350.200.450.80.150.350.250.150.050.15余量70490.250.351.21.90.202.6-2.90.100.227.28.20.100.050.15余量71750.150.201.22.00.102.12.90.180.285.16.10.100.050.15余量3.3尺寸及允许偏差3.3.1模锻件的尺寸及偏差应符合供需双方签订的图样规定，图样中未规定偏差且可直接测量的尺寸，其尺寸偏差应符合GB/T8545的规定。3.3.2自由锻件的尺寸及偏差应符合供需双方签订的图样或合同规定。3.4力学性能3.4.1模锻件的室温力学性能应符合表3的规定。表3顺流线试样的拉伸性能非流线试样的拉伸性能抗拉规定非比例断后伸长率抗拉规定非比例布氏供应厚度强度延伸强度强度延伸强度断后伸长率/%牌号/%硬度状态/mmRmR0.2RR0.2/MPa/MPa标距50mmAs/MPa/MPa标距50mmA不小于1100H1121007530181620T410038020511910025450385654403803212520142550450385654403802125T6508045038065435370211258010043538065435370211252YS/T479-2005表3（续）顺流线试样的拉伸性能非流线试样的拉伸性能抗拉规定非比例断后仲长率抗拉规定非比例布氏供应厚度强度延伸强度强度延伸强度断后伸长率/%牌号/%硬度状态/mmRmR0.zR.Ro.z/MPa/MPa标距50mmAs/MPa/MPa标距50mmAs不小于2025T61003602301191002219T610040026087385250431003003H11210095351816254032T610036029032115080270110161427011012105083H11110029015014122701401210H112100275125161427011014126061T61002602407626024054806066T6100345310871006151T6100305255109305255659025495425764504203213525504954257485415321357049T7350804904207648541532135801004904206485415211351001304854157647040021135504954257647038554135501004904206460380431357050T741001304854157645537032135130150485405764553703313525515440764904203213525505104357649042032135T650805104357648541532135801005054357648541521357075804553857642536532125T7380100440380764203602125804553857642535032125T7352801004403657642034021125T748052545576490425437175T7452805054357647038043T7454805154507648542043注1：布氏硬度值仅作参考，不作为验收依据。注2：厚度超过上表规定的模锻件性能附实测结果交货。3