Foreword
Committees responsible
Specification
1. Scope
2. Designation
3. Requirements
4. Manufacture of the steel
5. Chemical composition
6. Sem-finished material
7. Manufacturer of the product
8. Surface condition and soundness
9. Inspection
10. Number and selection of test samples and
preparation of test pieces
11. Post-weld heat treatment of test samples
12. Mechanical test methods
13. Mechanical properties at room temperature
14. Mechanical properties at elevated temperatures
15. Impact properties
16. Retests
17. Manufacturer's certificate
18. Marking
19. Delivery
20. Defects revealed after delivery
Appendices
A. Information to be supplied by the purchaser
B. Options
C. Minimum lower yield stress (ReL) or minimum 0.2%
proof stress (Rp0.2) values at elevated temperatures
for carbon-manganese steels
D. Minimum lower yield stress (ReL) or minimum 0.2%
proof stress (Rp0.2) values at elevated
temperatures for low alloy, ferritic stainless,
martensitic stainless steels and duplex stainless
steels
E. Minimum 1% proof stress (Rp1.0) values at elevated
temperatures for austenitic stainless steels
F. Procedure for verification of elevated temperature
proof stress values
G. Stress-rupture values for carbon-manganese steels
excluding grade 221-550
H. Stress-rupture values for low alloy, ferritic
stainless and martensitic stainless steels
J. Stress-rupture values for austenitic stainless
steels
K. Equivalent designations of steels in BS 1503 and
ISO 2604/1-1975
L. Equivalent diameter and ruling section of forgings
M. Request for room and elevated temperature
information
Tables
1. Chemical composition, mechanical properties at
room temperature and heat treatment of
carbon-manganese steels
2. Chemical composition, mechanical properties at
room temperature and heat treatment of low alloy,
ferritic stainless, martensitic stainless and
duplex stainless steels
3. Chemical composition, mechanical properties at room
temperature and heat treatment of austenitic
stainless steels
4. Permissible deviation from specified composition
for carbon-manganese steels
5. Permissible deviation from specified composition
for low alloy steels
6. Permissible deviation from specified composition
for ferritic stainless martensitic stainless,
duplex stainless and austenitic stainless steels
7. Maximum carbon equivalent values
8. Low temperature impact properties of
carbon-manganese, 3.5% nickel, 9% nickel and austenitic
stainless steels
9. Room temperature impact properties of
carbon-manganese steels
10. Room temperature impact properties of low alloy,
ferritic stainless and martensitic stainless steels
11. Parameters for lower confidence lines: steel grades
221-410, 221-430, 221-460, 221-490, 221-510,
221-530 and 221-550: up to and including 100 mm
thick
12. Parameters for lower confidence lines: steel grades
221-410, 221-430, 221-460, 221-490 and 221-510:
greater than 100 mm thick
13. Parameters for lower confidence lines: steel grades
223-410, 223-430, 223-460, 223-490 and 223-510: up
to and including 100 mm thick
14. Parameters for lower confidence lines: steel grade
164-490, and steel grades 224-410, 224-430, 224-460,
224-490 and 224-510: up to and including 100 mm
thick
15. Parameters for lower confidence lines: steel grades
620-440, 620-540 and grade 621-460
16. Parameters for lower confidence lines: steel grade
660-460
17. Parameters for lower confidence lines: steel grades
622-490, 622-560 and 622-650
18. Parameters for lower confidence lines: steel grades
625-520 and 625-590
19. Parameters for lower confidence lines: steel grades
410S21, 420S29, 403S17 and 405S17
20. Parameters for lower confidence lines: steel grade
762-690
21. Parameters for lower confidence lines: steel grades
304S11, 304S31 and 304S51
22. Parameters for lower confidence lines: steel grades
347S31 and 347S51
23. Parameters for lower confidence lines: steel grades
321S31, 321S51-490 and 321S51-510
24. Parameters for lower confidence lines: steel grades
316S11, 316S33 and 316S51
Figure
1. Example of lower confidence lines (for steel grade
224)