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/TR 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/TR 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?