1、高电阻电热合金GBT123419952高电阻电热合金(GBT12341995) 你的位置:首页特殊含金和钢材 2高电阻电热合金(GBT12341995) 发表时间:2006-10-14 13:24:00 (1)尺寸规格和允许偏差见表8-302表8-306。表8-302高电阻电热合金的尺寸围 (mm)合金牌号直 径丝 材棒 材盘 条OCr27A17Mo2O308.00其他牌号0.038.0012.030.08.010.0合金牌号冷轧带材热轧带材厚 度宽 度厚 度宽 度所有牌号0.063.505O250.02.55O(卷状)5.07O(条状)15O250O表8-303丝材、棒材和盘条的直径允许偏差
2、 (mm)类 别直径围允许偏差冷拉丝材O030O050土0.005O050O1000O07O1000.300士0O1OO3000.500O015O501.00O021.003.000.033.006.00O046.008.00O05热轧盘条热轧棒材8O12.0O412O20.0O520.030OO6注:考核每米电阻值的丝材,其尺寸允许偏差供参考。表8-304冷轧和热轧带材的厚度允许偏差 (mm)类 别厚度围允许偏差冷轧带材O050O1000.01O0.100O2000.015O20O50O02O501.00O031.001.800.041.802.500.062.503.50O06热轧带材2.
3、55.0O255O7OO30表8-305冷轧和热轧带材的宽度允许偏差 (mm)类 别宽度围允许偏差切 边不切边冷轧带材5.0lO00.20.610.020O一0.820.030.0一1O30O50O0.3一1.250.090.01O90Ol20O0.51.5120.0250.0士1.8热轧带材15.060.0士1.560O250O士2.5注:根据供需双方协议,在保证公差带不变的情况下,可以调整宽度的正、负偏差围。表8-306带材的最小长度类 别合金带厚度nm单支最小长度m冷轧带材O050.101OO100.30200.301.00151.002.00102.003.505热轧带材2.55.0l
4、O5O7.03注:1带材最小长度应符合表中的规定,当焊接部位符合本标准技术要求时,允许同一炉号数支带坯焊接在一起,根据供需双方协议,可供定尺或倍尺带材。 2热轧棒材每根长度由供需双方协议确定。 3冷拉丝材的圆度不应超过直径公差之半。 4热轧带材每米长度的侧弯不大于15mm,冷轧带材每米长度的侧弯应符合下表的规定。宽 度每米侧弯切 边不切边503.05.0(2)轴重见表8307。表8-307每轴(盘)冷拉丝材的质量直 径mm每轴(盘)质量kg标准质量较轻质量O030.050.020.0100.050.070.03O015O070.100.05O030O10O30O300.100O300.50O5
5、00.200O500.801.000.500O801.202001.202.004.002.003.506.003.505.008.005.001O00注:热轧盘条每盘质量不得小于lokg。(3)牌号和化学成分见表8-308。表8-307高电阻电热合金的牌号和化学成分合金牌号化学成分(质量分数)()CPSMnSiCrNiAlFe其他Cr20Ni80O08O20O16O60O751.6020.023O余量O501OCr30Ni700.08O020O0150.600.751.6028O31.0余量0.501.0Crl5Ni60O08O020O015O600.751.6015.018.055O61O
6、O50余量Cr20Ni350.080.0200.0151.001.0030018.021O34.037O余量Cr20Ni300.08O020O0151.001002.0018O21O30O34O余量合金牌号化学成分(质量分数)()CPSMnSiCrNiAlFe其他1Crl3A140.120.0250.0250.701.0012.015OO604O6O余量0Cr25A15O06O0250.0250.70O6023.026O0.604.56.5余量OCr23A15O060.025O0250.70O6020.523.5O604.25.3余量OCr2lA160.06O0250.0250.701.001
7、9.022.00.605.07O余量1Cr20A13O10O0250.025O701.0018O2l.OO603.04.2余量0Cr21A16NbO050.025O025O700.6021O23O0.605.07O余量Nb:O5OCr27A17M020.05O025O025O200.4026.527.80.606O7.0余量M0:1.82.2注:1在保证合金性能符合本标准要求的条件下,可以对合金成分围进行适当调整。 2为了改善合金性能,允许在合金中添加适量的其他元素。(4)电阻率见表8309、表8310。表8-309高电阻电热合金丝材的室温电阻率合金牌号直 径mm电阻率(20C时)(10一6m
8、)Cr20Ni803.001.14士O05Cr30Ni700.501.18O05O501.20O05Crl5Ni60O501.12土O05O501.15士O05Cr20Ni35Cr20Ni30O50 0.501.040.051.06士O05合金牌号直 径mm电阻率(20时)(10一6m)1Crl3A14O038.001.25O08OCr25A151.420.07OCr23Al51.350.060Cr21A161.420.071Cr20A131.23O060Cr21A16Nb1.45O070Cr27A17M02O308.001530.07注:考核每米电阻值的丝材,其室温电阻率不考核。表8-310
9、高电阻电热合金带材的室温电阻率合金牌号合金带厚度mm电阻率(20时)(10一6m)Cr20Ni800.801.09O050.803.001.13土O053.001.140.05Cr30Ni70O801.180.05O803.001.19土O053.001.20O05Crl5Ni60O801.11O050.803.001.14O053.001.150.05Cr20Ni35Cr20Ni30O801.04士0.050.801.060.051Crl3A140.053.501.250.080Cr25A151.42O070Cr23A151.350.07OCr21A161.420.071Cr20A131.2
10、3O07OCr2lA16Nb1.45O07OCr27A17M021.53O07注:每轴(盘)丝材任意部位每米电阻均匀性不得超过4,每卷冷轧带材任意部位每米电阻均匀性不得超过5。(5)快速寿命见表8311。表8-311丝材在规定温度下的快速寿命合金牌号试验温度快速寿命值h Cr20Ni80120080Cr30Ni70125050Crl5Ni60115080Cr20Ni35110080Cr20Ni30110080OCr25A151300800Cr23A15130080OCr2lAl61300801Cr20A13125080OCr21A16Nb1350500Cr27A17M02135050(6)伸长
11、率和工艺性能见表8-312。表8-312直径大小600mm的丝材和直径为80一lOOmm的热轧盘条的断后伸长率合金类别断后伸长率5() Ni-Cr合金20Ni-Cr-Fe合金201Crl3A14160Cr27A17M0210其他Fe-Cr-A1合金12注:1合金材应经热处理后软态交货,据供需双方协议,可供其他状态的合金材。 2直径为050600mm的丝材,在规定的芯棒上缠绕5圈后,表面不得出现分层及裂纹。铁铬铝丝材允许用反复弯曲试验代替缠绕试验,反复弯曲次数不得小于5次。3厚度大于080mm冷轧带材应做弯曲试验,其弯曲处不得出现分层及裂纹。(7)电阻温度因素(修正系数)见表8313。表8313
12、高电阻电热合金的电阻温度因素(修正系数)合金牌号201002003004005006007008009001000110012001300CCr20Ni801.0001.0061.0121.0181.0251.0261.0181.0101.0081.0101.0141.02l1.025Crl5Ni601.0001.0111.0241.0381.0521.0641.0691.0731.0781.0881.0951.109Cr20Ni351.0001.0291.0611.0901.1151.1391.1571.1731.1881.2081.2191.228Cr20Ni301.0001.0231.0
13、521.0791.1031.1251.1411.1581.1731.1871.20l1.2141.226OCr27-A17M021.000O9920.986O98lO978O976O974O972O970O969O9680.9680.967O.967OCr21-A16Nb1.000O997O996O994O991O9900.9900.990O990O990O990O9900.990OCr25-A151.0001.0021.0051.0081.0131.0211.0301.0381.0401.0421.0441.0461O47OCr21-A161.0001.0001.0021.0061.0111
14、.0201.0371.0431.0461.0491.0521.0551.0581CR20-A131.0001.0111.0251.0421.0611.0851.1201.1421.1541.1641.1721.1801.1861Crl3一A141.0001.0051.0141.0281.0441.0641.0901.1201.1321.1421.1500Cr23一A151.0001.0021.0071.0141.0241.0361.0561.0641.0701.0741.0781.08l1.084Cr30Ni701.0001.0071.0161.0281.0381.0441.0361.0301.0281.0291.0331.0371.043(8)物理性能见表8-314。(9)用途适用于制做电加热元件和一般电阻元件。
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