API SPEC 6A
API SPEC 6A
(OP)
Hi all,
please help me about material code or uns number for API spec 6A.
material stated flange #5000 RTJ WN type 6B,API spec 6A material 45K sch 120 R39.
anybody can help me for material code or UNS number ?
i search in internet, commercial code for 45K is A105 carbon steel but i am not sure because this material will connect to wellhead.
thanks
Ciko
please help me about material code or uns number for API spec 6A.
material stated flange #5000 RTJ WN type 6B,API spec 6A material 45K sch 120 R39.
anybody can help me for material code or UNS number ?
i search in internet, commercial code for 45K is A105 carbon steel but i am not sure because this material will connect to wellhead.
thanks
Ciko





RE: API SPEC 6A
RE: API SPEC 6A
A105 is fairly basic carbon steel so you'll need a fairly benign set of well head conditions. Only you know.
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Also: There's usually a good reason why everyone does it that way
RE: API SPEC 6A
I assume that Carbon Steel is suitable for service but you will find A105 will not meet these requirments and as mentioned AISI 4130 is commonly used. On my present project we are using ASTM A694 and stipulating that it must meet Table 6 properties.
RE: API SPEC 6A
A105N-45k material is commonly used for API-6A (NACE rated) welding neck flanges only when the dimensions meet API-6A guidelines, anything outside of given dimensions, the flange becomes "other end connection". Since your bore size exceeds API max ID (3.47) you will need to do the math and see if 45k material is acceptable. Typical A105 material (5k only) is used for field welding requirements, since it will most likely be welded to A106/ASTM pipe or equal material. See 10.1.2.2. Type 6B flanges API-6A-20th for more information about sizing welding neck flanges. If you can use A105N-45k material, the flange will have a DD/EE-NL rating for H2S service.
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