P92 Nuclear Power Plant Seamless Steel Pipe as per ASTM A335
Standard
New Force is providing ASTM A335 P92 alloy steel seamless pipes,
which are mainly used for nuclear power plant high-temperature
service. P92 pipe a kind of chrome moly pipes listed in ASTM A335,
a standard in power generation and petrochemical industry. TIPTOP
supply a full range of A335 chrome moly pipes, also including the
minimum wall thickness pipes.
1. Application:
For high pressure boiler and steam header pipes; petrochemical
industry pipes; thermal power plant; nuclear power plant; USC
boiler.
2. Standards:
ASTM A335 Standard Specification for Seamless Ferritic Alloy-Steel
Pipe for High-Temperature Service
3. Ordering Information
Quantity (feet, meters, or number of lengths),
Name of material (seamless alloy steel pipe),
Grade (P92),
Manufacture (hot-finished or cold-drawn),
Size using one of the following:
NPS and schedule number;
Outside diameter and nominal wall thickness;
Outsider diameter and minimum wall thickness;
Inside diameter and nominal wall thickness;
Inside Diameter and minimum wall thickness.
Length (specific or random)
End finish (plain end or bevel end)
4. Chemical Requirements
| Chemical Requirements |
| Grade | UNS Designation | Composition, % |
| C | Mn | P
max | S
max | Si | Cr | Mo | Others |
| P92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.50 max | 8.50-9.50 | 0.30-0.60 | V 0.15-0.25 |
| N 0.03-0.07 |
| Ni 0.40 max |
| Al 0.02 max |
| Cb 0.04-0.09 |
| W 1.5-2.00 |
| B 0.001-0.006 |
| Ti 0.01 max |
| Zr 0.01 max |
5. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed
above, please contact us for further information. |
6. Tensile Requirements
Tensile Strength min.: 90ksi620MPa
Yield Strength min.: 64ksi/440MPa
7. Inspection & Test
Chemical composition, mechanical properties ( tensile strength,
yield strength, elongation, flaring, flattening, bending, hardness,
impact test), surface and dimension, NDE, hydrostatic test.
8. Manufacture
Hot Rolled or Cold Drawn
9. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing &
Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE →
Visual & Dimension Inspection → Marking → Storing & Shipping
10. Supplementary Requirements
S1 Product Analysis
S2 Transverse Tension Test
S3 Flattening Test
S4 Metal Structure and Etching Test
S5 Photomicrographs
S6 Photomicrographs for Individual Pieces
We can also accept additional requirements beyond of standard,
including chemical composition:
| C | 0.07-0.13 | Mo | 0.30-0.60 | Cu | 0.10 max | Sn | 0.010 max |
| Mn | 0.30-0.50 | W | 1.50-2.00 | Al | 0.020 max | Sb | 0.003 max |
| P | 0.020 max | Ni | 0.20 max | B | 0.001-0.006 | N/Al Ratio | 4.0 min. |
| S | 0.005 max | V | 0.15-0.25 | Ti | 0.01 max | Pb | Content of Pb shall be measured and reported. |
| Si | 0.10-0.40 | Cb | 0.04-0.09 | Zr | 0.01 max |
| Cr | 8.5-9.5 | Ni | 0.035-0.070 | As | 0.010 max |
Some elements that are required in above table are not required to
be reported by the applicable ASME or ASTM specification.
Additional Normalizing Requirement
| Normalizing Temperature Range | Hold Time | Minimum Cooling Rage |
| Wall Thickness (T) | Min. Hold Time after Surface Temperature has exceeded 1900°F
(1040°C) |
1900-1975°F
(1040-1080°C) | T≤2 in (50mm) | 15 minutes | 9°F (5°C) per minute above 900°F (482°C)
Cooling shall be continuous to below 200°F (95°C) |
| 2 in (50mm)<T≤3 in (75mm) | 30 minutes |
| 3 in (75mm)<T≤4 in (100mm) | 45 minutes |
| 4 in (100mm)<T≤5 in (125mm) | 75 minutes |
| 5 in (125mm)<T≤6 in (150mm) | 90 minutes |
