S32750焊接评定母材冲击值

枫無玥

谁知道S32750焊接评定-40或者-46母材冲击值是多少，冲击按ASTM A923B做的，谢谢

dljdw

按照ASTM A923-14的规定，S32750母材冲击功是买/卖双方协商定的。

有要求-50℃≥80J的。

asnt2012

API 938-C A.1.4: Test Method B for 25 % Cr grades, shall include testing at –46 °C (−50 °F), and shall meet 70 J average, 65 J minimum (52 ft-lb average, 48 ft-lb minimum).

API 938-C A.1.4 To ensure adequate corrosion resistance, each heat of material of standard DSS grades (except for tubing) shall be tested per Test Method B or Test Method C in ASTM A923, and meet the given criteria. The rapid screening test included in ASTM A923 shall not be used to accept material. For 25 % Cr grades, both Test Method B and Test Method C shall be done. Test Method B for 25 % Cr grades, shall include testing at –46 °C (−50 °F), and shall meet 70 J average, 65 J minimum (52 ft-lb average, 48 ft-lb minimum). Test Method C for 25 % Cr grades shall include testing at 40 °C (104 °F) and shall meet 10 mdd maximum. ASTM A923 Method C corrosion test is not appropriate for lean DSS.

jia5515

谢谢了，学习了。。。。。。

jones-su

非常感謝你的分享..

zhangdc111

那标准 该有吧   飞