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Cr18.0~20.018.0~20.016.0~18.016.0~18.0MoCuAlVNbCoN2.00~3.002.00~3.000.44~1.010.40~0.750.04~0.300.75~1.25≤0.15≤0.50≤0.05≤0.50≤0.15≤0.06≤0.12≤0.05≤0.501.00~1.500.80~1.250.44~0.650.44~0.65≤0.30≤0.30≤0.30≤0.30≤0.30≤0.300.60~0.90≤0.12≤0.12≤0.12≤0.12≤0.12≤0.120.15~0.25≤0.40≤0.40≤0.40≤0.40≤0.400.75~1.251.00~1.30≤0.03≤0.03≤0.03≤0.03≤0.02≤0.02≤0.02≤0.020.01~0.0300.04~0.11≤0.02≤0.03≤0.03≤0.02≥0.020.30.120.40.75~1.250.050.021)壁厚5/16im(7.94mm)以下时,每减薄1/32in(0.79mm),允许从以上所示数值中减去纵向伸长率1.5%(级别WPL6
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抗拉≥kis(Mpa)75(515)70(485)75(515)70(485)屈服≥伸长率,标距2in或50mm(或4D),≥,%kis(Mpa)纵向30(205)25(170)30(205)25(170)3525伸长率,标距2in或50mm,%,≥对于壁厚不小于5/16in的纵条试当采用标准圆试样,标验和所有以全截面试验的小尺寸试标距长度为4倍直径(4D)的较小比样的基本最小伸长率例尺寸试样时:纵向横向252016.516.522纵向28222222221616当使用标距2in或50mm样,或标距4D小尺寸比例试样时:纵向22壁厚≥5/16in.(7.94样,标距2in.(50mm),≥,%28303028303028282828横向55000(380)65000(450)6000(415)6000(415)65000(450)100000(690)63000(435)80000(550)65000(450)30000(205)35000(240)35000(240)35000(240)35000(240)75000(515)48000(315)65000(450)35000(240)353030303022282218标距2in或50mm(或4D)伸长率,≥,%纵向60(415)60(415)30(205)30(205)3020横向标准圆形试样或小尺寸比例试样,4D标距长度,≥,% 1类 1类 2类 2类 1类 2类 1类 2类 3类 2类 60~85 (415~585)70~95 (485~655)70~95 (485~655)60~85 (415~585)70~95 (485~655)66~91 (455~630)75~100 (515~690)63~88 (435~605)65~85 (450~585)75~95 (515~655)30(205)36(205)37.5(260)30(205)37.5(260)52(360)60(415)46(315)55(380)65(450)25222225222220252020 3类标距2in或50mm,壁标距4D的标准圆试样或小比例试样5/16in.(7.94mm)的矩形试样,和全伸长率,≥,%部小尺寸的全截面矩形试样≥纵向60(415)~85(585)63(435)~88(610)65(450)~90(620)35(240)46(315)35(240)2020221614横向12纵向30283022100(690)~125(865)75(515)别WPL6,WPL9和WPL3)或1.25%(WPL8)和横向伸长率1.0%(级别WPL6,WPL9和WPL3)。
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样,标距2in或采用长度为4倍直径(4D)的较小比对于纵条试验,壁厚小于5/16in(8mm),每减少例尺寸试样时:1/32in.(0.8mm)从基本最小伸长率可减小的百分值横向2014121214纵向1.751.51.51.51.51.251.51.25横向1.251111或50mm的标准圆形试从壁厚 5/16in(8mm)条状试样,每减薄,或标距4D小尺寸比例试样时:1/32in.(0.8mm)从基本最小伸长率可减小的百分值横向14纵向横向(7.94mm)的条状试样,标距2in.(50mm),≥,%283030283030282828281.51对壁厚<5/16in.(7.94mm)的条状试样的最小伸长率的计算公式,标距2in(50mm),≥,% 式中t=实际壁厚,in.48t+1348t+1548t+1548t+1348t+1548t+1548t+1348t+1348t+1348t+13断面收缩率,≥,%38303538354040384545mm,壁厚不小于in.(7.94mm)的矩形试样,和全标距2in或50mm,壁厚不小于5/16in.(7.94mm)的矩部小尺寸的全截面矩形试样≥形试样(1/2in.(12.7mm)的宽试样),≥横向16.51820﹙1﹚纵向横向第 7 页
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