定稿 ASTM A 269-08一般用途的无缝和焊接不锈钢管规范(2)

7. Chemical Composition 化学成分

temperature of the tubes is not less than the specified minimum

7.1 The steel shall conform to the requirements as to chemical

solution treatment temperature,tubes may be individually quenched

composition as prescribed in Table 1.

in water or rapidly cooled by other means.

7.1 钢应符合表1中规定的化学成分要求。

6.1 所有材料须进行热处理。除第6.2条外，热处理除UNS编号：

S31254和S32654（见6.3），S34565 （见6.4），N08367（见

8. Product Analysis 产品分析

6.8），N08904（见6.5）和N08926（见6.7），包括材质的加热8.1 An analysis of either one billet or one length of flat-rolled stock 最低温度为1900°F（1040°C）用水淬急冷或通过其他方法迅速or one tube shall be made from each heat. The chemical composition 冷却。此外，无缝管材的热处理温度不低于规定的最低固溶处理thus determined shall conform to the requirements specified. 温度，钢管可逐支水急冷或通过其他方法迅速冷却。 8.1 从每炉一支管坯或一根管子上截取试样分析，以确定化学成6.2 Controlled structural or special service characteristics shall be 分符合规定的要求。 specified as a guide for the most suitable heat treatment. If the final 8.2 A product analysis tolerance of Table number A1.1 in heat treatment is at a temperature under 1900°F and is so specified Specification A 480/A 480M shall apply. The product analysis on the order, each tube shall be stenciled with the final heat tolerance is not applicable to the carbon content for material with a treatment temperature in degrees Fahrenheit after the suffix “HT”. specified maximum carbon of .04 % or less. 6.2 结构或特殊用途的热处理控制应提供最合适的热处理制度。8.2 产品分析的偏差引用规范A480 /A480M中表A1.1。该产品如果指定温度和最终的热处理温度低于1900°F，在每支管的模板分析的偏差不适用于材料的碳含量≤0.04 ％。 标上最终热处理华氏温度后缀加“HT” 。 8.3 If the original test for product analysis fails, retests of two 6.3 S31254 and S32654 shall be heat-treated to a minimum additional billets, lengths of flat-rolled stock, or tubes shall be made. temperature of 2100°F (1150°C) followed by quenching in water or Both retests for the elements in question shall meet the requirements rapidly cooling by other means. of the specification; otherwise all remaining material in the heat or 6.3 S31254和S32654热处理的最低温度2100 °F（1150°C），lot shall be rejected or, at the option of the producer, each billet,

length of flat-rolled stock, or tube may be individually tested for 其次是用水骤冷或其他方法急冷。

acceptance. Billets, lengths of flat-rolled stock, or tubes which do not 6.4 S34565 shall be heat-treated in the range 2050°F (1120°C) to

meet the requirements of the specification shall be rejected. 2140°F (1170°C) followed by quenching in water or rapidly cooling

8.3 如果原先的产品分析测试不合格，复验应增加两个管坯或管by other means.

子取样测试。元素复验应符合规范的要求，否则所有剩余的材料6.4 S24565应热处理范围内2050°F（1120 ℃），以2140 °F

应予以拒绝或选择逐支管坯或管子进行测试验收，对于管坯或管（1170°C），其次是用水骤冷或其他方法急冷。

6.5 N08904 shall be heat treated to a minimum temperature of 子不符合规范要求的应予以拒绝。 2000°F (1100°C) followed by quenching in water or rapidly cooling by other means. 9. Mechanical Tests Required 机械性能试验要求 6.5 N08904应热处理到最低温度为2000°F（1100°C），其次是9.1 Flaring Test (Seamless Tubes)— One test shall be made on 用水骤冷或其他方法急冷。 specimens from one end of one tube from each lot (Note 2) of

finished tubes. 6.6 A solution annealing temperature above 1950°F (1065°C) may

impair the resistance to intergranular corrosion after subsequent 9.1 扩口试验（无缝管材）— 测试应从每批（注2 ）成品管的exposure to sensitizing conditions in TP321,TP347, and TP348. 端部取一个试样。 When specified by the purchaser, a lower temperature stabilization N0TE 2—The term lot applies to all tubes prior to cutting to or re-solution anneal shall be used subsequent to the initial high length of the same nominal size and wall thickness which are temperature solution anneal (see Supplementary Requirement S3). produced from the same heat of steel. When final heat treatment is in 6.6 对于钢种TP321，TP347和TP348固溶退火温度高于1950°Fa batch-type furnace, a heat-treatment lot shall include only those （1065 ℃），则会损害其随后在敏化条件下的抗晶间腐蚀性能。tubes of the same size and from the same heat which are heat treated

in the same furnace charge. When the final heat treatment is in a 如买方规定，则应在初始商温固溶退火后，再进行较低温度稳定

continuous furnace or when the heat-treated condition is obtained directly by quenching after hot forming, the number of tubes of the same size and from the same heat in a heat-treatment lot shall be determined from the size of the tubes as prescribed in Table 2.

注2：这项适用于切割前同一炉钢生产的同一公称尺寸和壁厚的所有管子。当最终热处理是在周期式炉中进行的，一批包括同一尺寸，同一炉号是在相同热处理炉内装料下进行热处理的那些管子。当最终热处理在连续炉中进行时，一批中同一炉号和同一尺寸的管于根数应按表2中的规定确定。

9.2 Flange Test (Welded Tubes)—One test shall be made on specimens from one end of one tube from each lot (Note 2) of finished tubes.

9.2 卷边试验（焊接钢管），其测试应从每批（注2）一支成品管的端部取一个试样。

9.3 Hardness Test—Brinell or Rockwell hardness determination shall be made on specimens from two tubes from each lot. The term lot applies to all tubes prior to cutting, of the same nominal diameter and wall thickness that are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the same heat which are heat treated in the same furnace charge. When the final heat treatment is in a continuous furnace or when the heat …… 此处隐藏：4980字，全部文档内容请下载后查看。喜欢就下载吧 ……