A welding procedure qualification record (WPQR) in acc. to ISO 15614-1 qualifies a welding procedure for steels and specifies conditions for the range of qualification. A WPQR normally qualifies the base material or combination of base materials for which the WPQR was carried out.

So that a WPQR does not have to be carried out for every material, the materials have been divided into groups according to ISO 15608, which have similar properties, that means the material groups reduces the number of WPQR significant.

ISO 15614-1 contains tables (for steel and nickel alloys respectively) for the range of qualifications.

Note 1: Separate WPQRs are required for each base material or base material combination that is not included in the group classification according to ISO/TR 20172, ISO/TR 20173 or ISO/TR 20174 or ISO 15608.

Note 2: The table below only applies if the same filler metal and the same post-weld heat treatment are used.

Table 1: Range of qualification for steels

Test piece A Base Mtrl. 1 [Group]	Test piece B Base Mtrl. 2 [Group]	Approval Range Base Mtrl. 1 [Group]	Approval Range Base Mtrl. 2 [Group]
1	1	1	1
2	2	2, 1	2,1
2	1	2, 1	1
3	3	3, 2, 1	3, 2, 1
3	2	3, 2, 1	2, 1
3	1	3, 2, 1	1
4	4	4	4, 3, 2, 1
4	3	4	3, 2, 1
4	2	4	2, 1
4	1	4	1
5	5	5	5, 2, 1
5	4	5	5
5	3	5	3
5	2	5	3
5	1	5	1
6	6	6	6, 5, 4, 3, 2, 1
6	5	6	5, 4, 3, 2, 1
6	4	6	4, 3, 2, 1
6	3	6	3, 2, 1
6	2	6	2, 1
6	1	6	1
7	7	7	7
7	6	7	6, 5
7	5	7	5
7	4	7	4
7	3	7	3, 2, 1
7	2	7	2, 1
7	1	7	1
8	8	8	8
8	7	8	7
8	6	8	6, 5, 4, 2, 1
8	5	8	5, 4, 2, 1
8	4	8	4
8	3	8	3, 2, 1
8	2	8	2, 1
8	1	8	1
9	9	9	9
9	8	9	8
9	7	9	7
9	6	9	6
9	5	9	5
9	4	9	4
9	3	9	3, 2, 1
9	2	9	2, 1
9	1	9	1
10	10	10	10
10	9	10	9
10	8	10	8
10	7	10	7
10	6	10	6, 4, 2, 1
10	5	10	5, 4, 2, 1
10	4	10	4
10	3	10	3, 2, 1
10	2	10	2, 1
10	1	10	1
11	11	11; 1	11, 1; 1
11	10	11	10
11	9	11	9
11	8	11	8
11	7	11	7
11	6	11	6
11	5	11	5
11	4	11	4
11	3	11	3, 2, 1
11	2	11	2, 1
11	1	11 1	1 1

Table 2: Range of qualification for Nickel alloys

Test piece A Base Mtrl. 1 [Group]	Test piece B Base Mtrl. 2 [Group]	Approval Range Base Mtrl. 1 [Group]	Approval Range Base Mtrl. 2 [Group]
41	41	41	41
42	42	42	42
42	41	42	41
43	43	43; 45; 47	43; 45; 47
43	42	43	42
43	41	43	41
44	44	44	44
44	43	44	43
44	42	44	42
44	41	44	41
45	45	45; 43	45; 43
45	44	45	44
45	43	45	43
45	42	45	42
45	41	45	41
46	46	46	46
46	45	46	45
46	44	46	44
46	43	46	43
46	42	46	42
46	41	46	41
47	47	47; 45; 43	47; 45; 43
47	46	47	46
47	45	47	45
47	44	47	44
47	43	47	43
47	42	47	42
47	41	47	41
48	48	48	48
48	47	48	47
48	46	48	46
48	45	48	45
48	44	48	44
48	43	48	43
48	42	48	42;
48	41	48	41
41	1	41	1
42	1	42	1
43	1	43	1
44	1	44	1
45	1	45	1
46	1	46	1
47	1	47	1
48	1	48	1
41	2	41	2a, 1
42	2	42	2a, 1
43	2	43	2a, 1
44	2	44	2a, 1
45	2	45	2a, 1
46	2	46	2a, 1
47	2	47	2a, 1
48	2	48	2a, 1
41	3	41	3a, 2, 1
42	3	42	3a, 2, 1
43	3	43	3a, 2, 1
44	3	44	3a, 2, 1
45	3	45	3a, 2, 1
46	3	46	3a, 2, 1
47	3	47	3a, 2, 1
48	3	48	3a, 2, 1
41	5	41	6, 5b, 4, 2, 1
42	5	42	6, 5b, 4, 2, 1
43	5	43	6, 5b, 4, 2, 1
44	5	44	6, 5b, 4, 2, 1
45	5	45	6, 5b, 4, 2, 1
46	5	46	6, 5b, 4, 2, 1
47	5	47	6, 5b, 4, 2, 1
48	5	48	6, 5b, 4, 2, 1
41	6	41	6b, 4, 2, 1
42	6	42	6b, 4, 2, 1
43	6	43	6b, 4, 2, 1
44	6	44	6b, 4, 2, 1
45	6	45	6b, 4, 2, 1
46	6	46	6b, 4, 2, 1
47	6	47	6b, 4, 2, 1
48	6	48	6b, 4, 2, 1
41	8	41	8b
42	8	42	8b
43	8	43	8b
44	8	44	8b
45	8	45	8b
46	8	46	8b
47	8	47	8b
48	8	48	8b
41	11	41	11
42	11	42	11
43	11	43	11
44	11	44	11
45	11	45	11
46	11	46	11
47	11	47	11
48	11	48	11

Read More

Which scope applies to a PQR EN ISO 15614-1 if the material is assigned to two material groups?

Which material belongs to which material group?