NACE MR 0175 Material Compliance 2

[John7474]

I want to know if the following materials are NACE MR 0175 compliant,

These are used to make fittings, equipment or accessories that are used for hot tapping. All of the products would be in contact with the H2S.

Thanks in advance.

Pipe Cutter body, back plate,and holder
1. SA 283 GR. D
2. A 572 Gr. 50
3. AISI 1018 / 1020
4. AISI 1018 / 1026

Pipe Sealing structural materials and bolt ( remain inside the pipe in the corrosive environment and resist different forces)
5. A 513
6. A 514 Gr. B or H
7. A 517 Gr. B or H
8. A / SA 574
9. AISI 4140 / 4142
10. AISI 4140 / 4130
11. 17-4 Ph. Stn. Stl H900

Bar, Plates, Coupling
13. A / SA 36
14. A / SA 537 Cl 1
15. A / SA 234

RTJ ring material
16. SS 304
17. SS 316
18. SS 347
19. SS 410

 

[SJones]

Take a copy of NACE MR0175, the inspection documents of the materials and the composition of the fluids that the materials will be exposed to and work it through. We can't tell you just from a list of standards and materials.

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[EdStainless]

You should hire someone that is well versed in MR0175 to help you with this.
For most of these materials it will depend on their specific thermo-mechanical condition. There are hardness limits for many materials.

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