ASTM A234 WP22的化学成分和力学性能
ASTM A234 WP22的化学成分和力学性能
化学成分Chemical Compositions ( max, % )
| 钢级Grade | WP22 CL1 |
| C | 0.05-0.15 |
| Mn | 0.30-0.60 |
| P | 0.04 |
| S | 0.04 |
| Si | 0.5 |
| Cr | 1.9-2.6 |
| Mo | 0.87-1.13 |
| Ni | ... |
| Cu | ... |
| V | ... |
拉伸性能Tensile Requirements
| 钢级Grade | WP22 CL1 |
| 抗拉强度范围Tensile strength, range ksi [MPa] | 60–85 [415–585] |
|
最小屈服强度 Yield strength, min, ksi [MPa] (0.2 % offset or 0.5 % extension-under-load) |
30 [205] |
| 延伸率Elongation: |
WP22 CL1 |
|
| 纵向Longitudinal | 横向Transverse | |
| 标距为4D的标准圆形试样或小尺寸比例试样的最小值Standard round specimen, or small proportional specimen, min % in 4 D |
22 |
14 |
|
5/16英寸（7.94mm）及其以上壁厚的矩形试样，和所有在全截面下试验的小尺寸试样，标距为2inch（50mm） Rectangular specimen for wall thickness 5⁄16 in. [7.94 mm] and over,and for all small sizes tested in full section; min % in 2 in. [50 mm] |
30 |
20 |
允许从上列伸长率值上，对于壁厚在7.94mm以下的，每减薄0.79mm，纵向伸长率递减1.5%及横向伸长率递减1.0%。下表给出不同壁厚的最小值。For each 1⁄32 in. [0.79 mm] decrease in wall thickness below 5⁄16 in. [7.94 mm], a deduction of 1.5 % for longitudinal and 1.0 % for transverse from the values shown above is permitted. The following table gives the minimum value for various wall thicknesses.
|
壁厚Wall Thickness |
WP22 CL1 |
||
|
in. |
[mm] |
纵向Longitudinal |
横向Transverse |
|
5⁄16 (0.312) |
7.94 |
30 |
20 |
|
9⁄32 (0.281) |
7.14 |
28.5 |
19 |
|
1⁄4 (0.250) |
6.35 |
27 |
18 |
|
7⁄32 (0.219) |
5.56 |
25.5 |
… |
|
3⁄16 (0.188) |
4.76 |
24 |
… |
|
5⁄32 (0.156) |
3.97 |
22.5 |
… |
|
1⁄8 (0.125) |
3.17 |
21 |
… |
|
3⁄32 (0.094) |
2.38 |
19.5 |
… |
|
1⁄16 (0.062) |
1.59 |
18 |
… |
硬度 Hardness - 最高197HB