ASTM A213 T2无缝合金锅炉管

ASTM A213 T2.

ASTM A213 T2是ASTM A213标准规范的无缝铁素体和奥氏体合金 - 钢锅炉,过热器,热交换器管的一部分。

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。

化学性质:

碳:0.10-0.20

锰:0.30-0.61

钾:0.025

硫:0.025

硅:0.10-0.30

镍:n / a

Chromium: 0.50-0.81

Molybdenum: 0.44-0.65

机械性能:

抗拉强度:

屈服:

伸长2英寸。或50mm,min。%:30.

最大限度。硬度罗克韦尔B:85

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 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通常为本规范提供的管尺寸和厚度为1/8英寸。[3.2 mm]内径为5英寸[127 mm],外径为0.015至0.500英寸[0.4至12.7 mm],包容性,在最小壁厚或,如果按顺序指定,平均壁厚。提供具有其他直径的管道,提供这种管符合该规范的所有其他要求。
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