Recent content by QualityAsia

Has anybody had the experience about the passivation of inconel materails? please share. Thank you inadvance...

I am preparing pre-WPS of GTAW for Mat'l stainless 310 grade(Base Metal). But Mat'l stainless 310 grade is hardly to find in my country, so I will use Mat'l stainless 304 grade instead of 310 grade. Filler metal is ER310 and impact test is not required, Pls. kindly share exsperience and...

I think, you don't need to follow QW-200.4(b) because your PQR#1 is less than 13 mm. QW200(f) is enough.

Thanks you :)

Refer to ASME Section IX, Tests for PQR including 1. 2 pcs Tensile Test 2. 4 pcs Ben Test I am not familiar with AWS. Tests are as same as Section IX, aren't they? What about VT,RT or UT and Macro, they are mandatory required tests on PQR speciments per AWS, aren't thay? QualityAsia

QW 452.5 (Fillet weld test) specifies that 1 Macro and 1 Fracture are required for welder qualification for your inquiry.

Thanks all, So, 1.QW408.2(d) specifies that Table 4 of SFA5.32 may be used to specify the shieding gas composition. And the table 1 specifies the minimum gas purity for each gas component only,doesn't it. 2."Recommended Shielding Gases for GTAW" by AWS is interesting. Please kindly...

Sorry for typing error, 99.95% Argon purity not 99.995% Thanks & regards, QualityAsia

Materails are 1. WPS for SA 106 2. WPS for Materail Grade 316 Thanks $ regards, QualityAsia

Thanks BB, Materails are CS and SS per ASME Section II. Refer to 1. QW 408.2(d), Cites to SFA 5.32 for Argon purity of shielding gas. 2. SFA 5.32 specifies the minimum purity of Argon for sheilding is 99.997%. I am confusing because I see many WPS(s) specify 99.995% Argon purity. Thanks &...

MY Owner has been requesting me to specify 99.997% Argon gas composition in our revised WPS, questions as below, 1. Are there any papers to support minimum 99.997% Argon gas composition required for GTAW? 2. 99.9% Argon gas composition was specified in old PQR. Can I specify 99.997% Argon gas...