A369/A369M FPA , FPB , FP1 , FP2 Carbon and Ferritic Alloy Steel Forged and Bored Pipe
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for
High-Temperature Service
Testing:
Additional Tension Test
Additional Flattening or Bend Tests
Ultrasonic Tests
Hydrostatic Test
Metal Structure and Etching Tests
TABLE 1 Chemical Requirements
Grade | Composition | |||
FPA | FPB | FP1 | FP2 | |
Carbon | 0.25max | 0.25max | 0.10-0.20 | 0.10-0.20 |
Manganese | 0.27-0.93 | 0.29-1.06 | 0.30-0.80 | 0.30-0.61 |
Phosphorus,max | 0.035 | 0.035 | 0.025 | 0.025 |
Sulfur,max | 0.035 | 0.035 | 0.025 | 0.025 |
Silicon | 0.10min | 0.10min | 0.10-0.50 | 0.10-0.30 |
Chromium | … | … | … | 0.50-0.81 |
Molybdenum | … | … | 0.44-0.65 | 0.44-0.65 |
Grade | FP5 | FP9 | FP11 | FP12 |
Carbon | 0.15max | 0.15max | 0.05-0.15 | 0.05-0.15 |
Manganese | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.61 |
Phosphorus,max | 0.025 | 0.030 | 0.025 | 0.025 |
Sulfur,max | 0.025 | 0.030 | 0.025 | 0.025 |
Silicon | 0.50max | 0.50-1.00 | 0.50-1.00 | 0.50max |
Chromium | 4.00-6.00 | 8.00-10.00 | 1.00-1.50 | 0.80-1.25 |
Molybdenum | 0.45-0.65 | 0.90-1.10 | 0.44-0.65 | 0.44-0.65 |
Grade | FP21 | FP22 | FP91 | FP92 |
Carbon | 0.05-0.15 | 0.05-0.15 | 0.08-0.12 | 0.07-0.13 |
Manganese | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 |
Phosphorus,max | 0.025 | 0.025 | 0.025 | 0.020 |
Sulfur,max | 0.025 | 0.025 | 0.025 | 0.010 |
Silicon | 0.50max | 0.50max | 0.20-0.50 | 0.50max |
Chromium | 2.65-3.35 | 1.90-2.60 | 8.00-9.50 | 8.50-9.5 |
Molybdenum | 0.80-1.06 | 0.87-1.13 | 0.85-1.05 | 0.30-0.60 |
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| Others: | W 1.50-2.00 |
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| Ni 0.40 max | V 0.15-0.25 |
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| V 0.18-0.25 | Cb 0.15-0.25 |
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| Cb 0.06-0.10 | N 0.030-0.070 |
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| N 0.03-0.07 | Ni 0.04 max |
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| AI 0.04 max | AI 0.040max |
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| B 0.001-0.006 |
TABLE 2 Tensile Requirements
Grade | FPA | FPB | FP1,FP2 | FP12 | FP91 | FP92 | All Others | ||||||||
Tensile strength,min, Ksi,[MPa] | 48[330] | 60[415] | 55[380] | 60[415] | 85[585] | 90[620] | 60[415] | ||||||||
Yield strength,min, Ksi,[MPa] | 30[210] | 35[240] | 30[210] | 32[220] | 60[415] | 64[440] | 30[210] | ||||||||
Elongation Requirements | |||||||||||||||
Grade | FPA | FPB | FP91 and FP92 | All Others | |||||||||||
Elongation in 2 in. or 50mm,min %: | Longitu-dinal | Trans-verse | Longitu-dinal | Trans- verse | Longitu- dinal | Trans- verse | Longitu- dinal | Trans- verse | |||||||
35 | 25 | 30 | 17 | 27 | 18 | 30 | 20 | ||||||||
Basic minimum elongation for wall 5⁄16 in. | 28 | 20 | 22 | 12 | 20 | 13 | 22 | 14 | |||||||
[8mm]and over in thickness, strip tests, and for all small sizes tested in full-section When standard round 2-in. or 50-mm gage length test specimen is used |