Chrome Moly Pipes & Tubes Manufacturer and Supplier
Chrome Moly Pipes & Tubes refer to pipes and tubes made from alloyed steel where the alloys contain different proportions of chromium from 0.5 to 9 percent and molybdenum from 0.5 to 1 percent. Such metals have been alloyed in order to improve their temperature-resistant capacity, their oxidation and corrosion resistance, besides their ability to resist creeps. The pipes can be manufactured based on ASTM A335 and ASME SA335 standards, and they are applied in various industries such as pressure vessels, boilers, heat exchangers, power stations, petrochemical plants, and refineries due to constant pressure and temperatures. They possess excellent mechanical strength, weldability, and durability, providing a reliable performance in industries. USA Piping Solution has a wide variety of grades, sizes and custom spec Chrome Moly Pipes & Tubes to meet the critical needs of many industrial applications around the world.
Specification of Chrome Moly Pipes & Tubes
| Feature | Details |
|---|
| Standard Specification | ASTM A335 / ASME SA335 |
| Size Range (Seamless) | 1/2″ to 36″ NB (Nominal Bore) |
| Wall Thickness | Up to 40mm |
| Schedules | SCH 20, 30, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS (Up to 4″ wall thickness) |
| Length | 1 Meter to 14 Meters (Single Random, Double Random, & Cut Length) |
| Available Forms | Round, Square, Rectangular, Hydraulic, etc. |
| Certification | IBR (Indian Boiler Regulations) compliant where specified |
Chemical Composition of Chrome Moly Pipes & Tubes
| Grade | UNS Equiv. | Carbon (C) | Manganese (Mn) | Phos (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Molybdenum (Mo) |
|---|
| P1 | K11522 | 0.10–0.20 | 0.30–0.80 | le 0.025 | le 0.025 | 0.10–0.50 | — | 0.44–0.65 |
| P2 | K11547 | 0.10–0.20 | 0.30–0.61 | le 0.025 | le 0.025 | 0.10–0.30 | 0.50–0.81 | 0.44–0.65 |
| P5 | K41545 | le 0.15 | 0.30–0.60 | le 0.025 | le 0.025 | le 0.50 | 4.00–6.00 | 0.44–0.65 |
| P5b | K51545 | le 0.15 | 0.30–0.60 | le 0.025 | le 0.025 | 1.00–2.00 | 4.00–6.00 | 0.44–0.65 |
| P5c | K41245 | le 0.12 | 0.30–0.60 | le 0.025 | le 0.025 | le 0.50 | 4.00–6.00 | 0.44–0.65 |
| P9 | S50400 | le 0.15 | 0.30–0.60 | le 0.025 | le 0.025 | 0.50–1.00 | 8.00–10.0 | 0.44–0.65 |
| P11 | K11597 | 0.05–0.15 | 0.30–0.61 | le 0.025 | le 0.025 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 |
| P12 | K11562 | 0.05–0.15 | 0.30–0.60 | le 0.025 | le 0.025 | le 0.50 | 0.80–1.25 | 0.44–0.65 |
| P15 | K11578 | 0.05–0.15 | 0.30–0.60 | le 0.025 | le 0.025 | 1.15–1.65 | — | 0.44–0.65 |
| P21 | K31545 | 0.05–0.15 | 0.30–0.60 | le 0.025 | le 0.025 | le 0.50 | 2.65–3.35 | 0.80–1.60 |
| P22 | K21590 | 0.05–0.15 | 0.30–0.60 | le 0.025 | le 0.025 | le 0.50 | 1.90–2.60 | 0.87–1.13 |
| P91 | K91560 | 0.08–0.12 | 0.30–0.60 | le 0.020 | le 0.010 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 |
| P92 | K92460 | 0.07–0.13 | 0.30–0.60 | le 0.020 | le 0.010 | le 0.50 | 8.50–9.50 | 0.30–0.60 |
Chrome Moly Pipes & Tubes Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) |
|---|
| P1, P2 | 380 | 205 |
| P12 | 415 | 220 |
| P23 | 510 | 400 |
| P91 | 585 | 415 |
| P92 | 620 | 440 |
| P122 | 620 | 400 |
Equivalent Grades of Chrome Moly Pipes & Tubes
| Werkstoff (Mat. No.) | DIN / EN Grade | ASTM / ASME Equiv. |
|---|
| 1.5415 | 16Mo3 | A335 Grade P1 |
| 1.7335 | 13CrMo4-5 | A335 Grade P11, P12 |
| 1.7380 | 10CrMo9-10 | A335 Grade P22 |
| 1.7362 | X11CrMo5 | A335 Grade P5 |
| — | — | A335 Grade P9 |
| 1.4903 | X10CrMoVNb9-1 | A335 Grade P91 |
Tensile Strength of Chrome Moly Pipes & Tubes
| Grade | Property | Imperial (ksi) | Metric (MPa) |
|---|
| P-5 | Tensile Strength | 60 | 415 |
| P-5 | Yield Strength | 30 | 205 |
| P-9 | Tensile Strength | 60 | 415 |
| P-9 | Yield Strength | 30 | 205 |
| P-11 | Tensile Strength | 60 | 415 |
| P-11 | Yield Strength | 30 | 205 |
| P-22 | Tensile Strength | 60 | 415 |
| P-22 | Yield Strength | 30 | 205 |
| P-91 | Tensile Strength | 85 | 585 |
| P-91 | Yield Strength | 60 | 415 |
Heat Treatment Chart of Chrome Moly Pipes & Tubes
| Grade | Heat Treatment Type | Normalizing Temp. Range °F [°C] | Subcritical Anneal or Tempering Range °F [°C] |
|---|
| P5 (b, c) | Full or Isothermal Anneal | — | — |
| P5 (b, c) | Normalize and Temper | — | 1250 [675] |
| P5 (b, c) | Subcritical Anneal (P5c only) | — | 1325 – 1375 [715 - 745] |
| P9 | Full or Isothermal Anneal | — | — |
| P9 | Normalize and Temper | — | 1250 [675] |
| P11 | Full or Isothermal Anneal | — | — |
| P11 | Normalize and Temper | — | 1200 [650] |
| P22 | Full or Isothermal Anneal | — | — |
| P22 | Normalize and Temper | — | 1250 [675] |
| P91 | Normalize and Temper | 1900 - 1975 [1040 - 1080] | 1350 - 1470 [730 - 800] |
| P91 | Quench and Temper | 1900 - 1975 [1040 - 1080] | 1350 - 1470 [730 - 800] |
Elongation Chart of Chrome Moly Pipes & Tubes
| Wall Thickness: in. | Wall Thickness: mm | P5, P9, P11, P22 (Longitudinal) | P5, P9, P11, P22 (Transverse) | P91 (Longitudinal) |
|---|
| 5/16 (0.312) | 8.0 | 30 | 20 | 20 |
| 9/32 (0.281) | 7.2 | 28 | 19 | 19 |
| 1/4 (0.250) | 6.4 | 27 | 18 | 18 |
| 7/32 (0.219) | 5.6 | 26 | 17 | 17 |
| 3/16 (0.188) | 4.8 | 24 | 16 | 16 |
| 5/32 (0.156) | 4.0 | 22 | 15 | 15 |
| 1/8 (0.125) | 3.2 | 21 | 14 | 14 |
| 3/32 (0.094) | 2.4 | 20 | 13 | 13 |
| 1/16 (0.062) | 1.6 | 18 | 12 | 12 |
Chrome Moly Pipes & Tubes Outside Diameter Chart
| NPS [DN] Designator | Over: in. (mm) | Under: in. (mm) |
|---|
| 1/8 to 1 1/2 [6 - 40] | 1/64 (0.40) | 1/64 (0.40) |
| Over 1 1/2 to 4 [40 - 100] | 1/32 (0.79) | 1/32 (0.79) |
| Over 4 to 8 [100 - 200] | 1/16 (1.59) | 1/32 (0.79) |
| Over 8 to 12 [200 - 300] | 3/32 (2.38) | 1/32 (0.79) |
| Over 12 [300+] | +1% of OD | -1% of OD |
Application and Industrial Uses of Chrome Moly Pipes & Tubes
- Power Generation Plants
- Thermal Power Boilers
- Heat Exchangers
- Superheater and Reheater Systems
- Oil & Gas Refineries
- Petrochemical Processing Units
- Chemical Processing Industries
- High-Temperature Pressure Vessels
- Steam Piping Systems
- Offshore Drilling Platforms
Other Grades of Pipes & Tubes
What are Chrome Moly Pipes & Tubes?
Chrome Moly Pipes & Tubes are alloy steel pipes made with chromium and molybdenum. They are known for high strength, heat resistance, and durability in high-pressure applications.
What is chrome moly pipe?
Chrome moly pipe is a type of alloy steel pipe containing chromium and molybdenum for improved temperature resistance, corrosion resistance, and mechanical strength.
What is chrome moly used for?
Chrome moly is widely used in power plants, oil & gas industries, refineries, boilers, heat exchangers, and high-temperature piping systems.
Are Chrome Moly Pipes stronger than stainless steel pipes?
Chrome Moly Pipes generally offer higher strength and better high-temperature performance, while stainless steel pipes provide better corrosion resistance.
What is chrome moly made of?
Chrome moly is made from alloy steel containing chromium, molybdenum, carbon, iron, and small amounts of other alloying elements.
Is Chrome Moly Pipe corrosion resistant?
Yes, Chrome Moly Pipe offers moderate corrosion resistance along with excellent resistance to heat, pressure, and oxidation.
