BS 1503:1989

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)

Carbon manganese, low alloy and stainless steel forgings. Provision included for the supply of semi-finished forged products.