ASTM A213 T22 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
ASTM A213 T22标准涵盖无缝铁素体和奥氏体钢锅炉，过热器和热交换器管。
包含字母H在其名称中的等级具有与不包含字母H的类似等级不同的要求。
这些不同的要求提供比通常可实现的更高的蠕变破裂强度，而无需这些不同的要求。ASTM A213 T22管应由无缝过程制成，如规定的那样，应热成品或冷敷。级TP347HFG应冷完成。热处理应单独进行，除了加热以进行热成型。将重新加热铁素体合金和铁素体不锈钢。另一方面，奥氏体不锈钢管应在热处理条件下提供。或者，在热成形后立即，虽然管的温度不小于最小溶液温度，但是可以在水中单独淬火或通过其他方式快速冷却管。应对每个管进行张力试验，硬度测试，扁平化测试和喇叭形试验。此外，每个管应受到无损电力测试或静水压试验。
ASTM A209至A213
此摘要是参考标准的简要摘要。它只是信息仅限，而不是标准的官方部分;标准本身的全文必须提及使用和应用。ASTM不会给出任何保修表达或暗示或制定任何表示本摘要的内容是准确的，完整或最新的。
ASTM A213 T22低合金钢的化学成分（％）
| 无指定 | K21590 |
| 碳 | 0.05-0.15 |
| Manganese | 0.30–0.60 |
| 磷 | 0.025 |
| 硫 | 0.025 |
| Silicon | 0.50 |
| 镍 | ...... |
| Chromium | 1.90-2.60 |
| Molybdenum | 0.87-1.13 |
| 钒 | ...... |
| 硼 | ...... |
| 铌 | ...... |
| Nitrogen | ...... |
| 铝 | ...... |
| 钨 | ...... |
| 其他元素 | ...... |
ASTM A213 T22低合金钢的机械性能
| Tensile strength(min) | 415MPa. |
| 屈服强度（分钟） | 220MPa. |
| Elongation | 30％ |
| 交货条件 | 退火 |
ASTM A213 Standard Scope
1.1本规范涵盖无缝铁素体和奥氏体钢锅炉，过热器和热交换器管，指定等级T91，TP304等。这些钢列在表1和2中。
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.
1.4 SI单位或英寸磅单元中所述的值将被单独视为标准。在文中，SI单位显示在括号中。每个系统中所述的值可能不是精确的等价物;因此，每个系统应独立使用。组合来自两个系统的值可能导致与标准不符。除非按顺序指定本规范的“M”指定，否则英寸磅单位应适用。
TABLE 1 Chemical Composition Limits, %A, for Low Alloy SteelA Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
b允许订购T2和T12，硫含量为0.045max。见16.3。
C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
Referenced Documents (purchase separately)
其他ASTM标准
狗万滚球官网合金钢管含有除碳，铬，硅，锰，钨，钼，钒和有限的其他常见的元素（如锰，硫，硅和磷）之外的大量元素。
Our team is highly trained and experienced in servicing and producing all types of steel supplies.
