Title 49

PART 178 APPENDIX A



Appendix A to Subpart C of Part 178 - Illustrations: Cylinder Tensile Sample

49:3.1.1.1.1.3.1.28.1 : Appendix A

Appendix A to Subpart C of Part 178 - Illustrations: Cylinder Tensile Sample

The following figures illustrate the recommended locations for test specimens taken from welded cylinders:

[67 FR 51654, Aug. 8, 2002]


Appendix A to Part 178 - Specifications for Steel

49:3.1.1.1.1.18.1.1.2 : Appendix A

Appendix A to Part 178 - Specifications for Steel

Table 1

[Open-hearth, basic oxygen, or electric steel of uniform quality. The following chemical composition limits are based on ladle analysis:]

Designation Chemical composition, percent-ladle analysis
Grade 1 1 Grade 2 1 2 Grade 3 2 4 5
Carbon 0.10/0.20 0.24 maximum 0.22 maximum.
Manganese 1.10/1.60 0.50/1.00 1.25 maximum.
Phosphorus, maximum 0.04 0.04 0.045. 6
Sulfur, maximum 0.05 0.05 0.05.
Silicon 0.15/0.30 0.30 maximum
Copper, maximum 0.40
Columbium 0.01/0.04
Heat treatment authorized ( 3) ( 3) ( 3).
Maximum stress (p.s.i.) 35,000 35,000 35,000.