ASTM A106 高温用无缝碳钢管

ASTM A106 高温用无缝碳钢管

化学成分

Grade	A	B	C
C	0.25	0.30	0.35
Mn	0.27-0.93	0.29-1.06	0.29-1.06
P	0.035	0.035	0.035
S	0.035	0.035	0.035
Si	≥0.10	≥0.10	≥0.10
Cr	0.40	0.40	0.40
Cu	0.40	0.40	0.40
Mo	0.15	0.15	0.15
Ni	0.40	0.40	0.40
V	0.08	0.08	0.08

1.在规定的最大碳含量以下含碳量每降低0.01%则允许在规定的最大锰含量之上个增加0.06%的含锰量，但最大不得超过1.35%

2.Cr+Cu+Mo+Ni+V不得超过1%

拉伸性能

拉伸性能	Grade A		Grade B		Grade C
抗拉强度, min, psi [MPa]	48 000 [330]		60 000 [415]		70 000 [485]
屈服强度, min, psi [MPa]	30 000 [205]		35 000 [240]		40 000 [275]
伸长率 2 in. [50 mm], min, %:	纵向	横向	纵向	横向	纵向	横向
适用于横向带材实验和全部小尺寸全截面实验	35	25	30	16.5	30	16.5
标准圆形实验，标距为 2-in. [50-mm]	28	20	22	12	20	12
纵向带材实验	注		注		注
对横向带材实验, 当壁厚小于5⁄16 in. [7.9 mm]时,每减小1.32-in. [0.8-mm]，应从基本最小伸长率中减小的百分数		1.25		1.00		1.00

注:

The minimum elongation in2 in. [50 mm] shall be determined by the following equation:

e = 625000A^0.2 / U ^0.9 for SI units, and
e = 1940A^0.2 / U ^0.9 for inch-pound units,

where:

e = minimum elongation in2 in. [50 mm], %, rounded to the nearest 0.5 %,
A = cross-sectional area of the tension test specimen, in.² [mm²], based upon specified outside diameter or nominal specimen width and
specified wall thickness,rounded to the nearest0.01 in.² [1 mm²]. (If the area thus calculated is equal to or greater than0.75 in.² [500 mm²], then the value0.75 in.² [500 mm²] shall be used.), and
U = specified tensile strength, psi [MPa].