ASME Material Numbrs 구분

 

1. P-number 구분목적

WPS & BPS (Welding / Brazing Procedure Qualification)의 번호를 줄이기 위해, ASME BPVC에 의해 모재 (Base Metal)가 화학적 조성, 용접성, 기계적 특성에 따라 P-numbr로 구분되어 진다.

 

 

2. G-number 구분목적

충격시험 (Impact Test) 요건을 가지는 규정된 Ferrous metal은 P-number 안에서 Group number로 구분된다. 즉, P-number 안에서 충격시험을 요구하는 PQ Test를 위해 분류되어진다고 할 수 있다.

 

 

3. P-number 구분요쇼

P-number 안에서 비교가 가능한 Group number는 아래의 요소로 구분되어 진다.

 

① Chemical Composition (화학적 조성)

② Weldability (용접성)

③ Mechanical Properties (기계적 특성)

 

 

4. UNS 번호지정과 함께 모재가 P-number로 지정될 때, 동일한 UNS number와 함께 다른 ASME material specification에 나열된 모재 (Base metal)은 P-number로 간주된다.

 

* P-number로 구분되는 ASME material

P-Numbers	Base Metal (Typical or Example)
1	Carbon Manganese Steels (four Group Numbers) ==> SA516-60,70..,etc
2	Not Used
3	1/2 Molybdenum or 1/2 Chromium, 1/2 Molybdenum (three Group Numbers)
4	1 1/2 Chromium, 1/2 Molybdenum (two Group Numbers) ==> SA387-Gr11.,etc
5A	2 1/2 Chromium, 1 Molybdenum
5B	5 Chromium, 1/2 Molybdenum or 9 Chromium, 1 Molybdenum  (two Group Numbers)
5C	Chromium, Molybdenum, Vanadium (five Group Numbers)
6	Martensitic Stainless Steels (Grade 410, 415, 429) (six Group Numbers)
7	Ferritic Stainless Steels (Grade 409, 430)
8	Austenitic Stainless Steels        Group 1 - Grades 304, 316, 317, 347         Group 2 - Grades 309, 310         Group 3 - High Manganese Grades         Group 4 - High Molybdenum Grades
9A, B, C	Two to four Nickel Steels
10A, B, C, F	Various low alloy steels
10H	Duplex and Super Duplex Stainless Steel (Grades 31803, 32750)
10I	High Chromium Stainless Steel
10J	High Chromium, Molybdenum Stainless Steel
10K	High Chromium, Molybdenum, Nickel Stainless Steel
11A	Various high strength low alloy steels (six Group Numbers)
11B	Various high strength low alloy steels (ten Group Numbers)
12 to 20	Not Used
21	High Aluminum content (1000 and 3000 series)
22	Aluminum (5000 series - 5052, 5454)
23	Aluminum (6000 series – 6061, 6063)
24	Not Used
25	Aluminum (5000 series - 5083, 5086, 5456)
26 to 30	Not used
31	High Copper content
32	Brass
33	Copper Silicone
34	Copper Nickel
35	Copper Aluminum
36 to 40	Not Used
41	High Nickel content
42	Nickel, Copper - (Monel 500)
43	Nickel, Chromium, Iron - (Inconel)
44	Nickel, Molybdenum – (Hastelloy B2, C22, C276, X)
45	Nickel, Chromium
46	Nickel, Chromium, Silicone
47	Nickel, Chromium, Tungsten
47 to 50	Not Used
51, 52, 53	Titanium Alloys
61, 62	Zirconium Alloys