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Alloy 625 is an austenitic grade of stainless steel. An Inconel 625 Tube is designed with a superior chemical concentration of chromium, nickel, and molybdenum. The outstanding composition gives these tubes enhanced corrosion and oxidation resistance properties. Alloy 625 Tube is designed to work in cryogenic as well as in high temperatures up to 1800 degrees F. These tubes are highly resistant to attacks in mild conditions, especially in marine or alkaline media. The presence of molybdenum in the AMS 5581 Tubing further helps make it resistant to pitting and crevice corrosion that is common in seawater systems. The Inconel Tube can be produced and processed in a range of cold and hot working processes. These tubes can be welded to subsequent piping grades and items, making use of standard welding procedures.
The Alloy 625 Pipe is a non-magnetic grade that shows enhanced strength and superior resistance to creep rupture across stress-induced systems. These pipes are designed with excellent mechanical and thermal properties. Having a yield strength of 430mpa, the Inconel Pipe exhibits a tensile strength of 940mpa. The pipes in this grade can be easily elongated by 51.5% at temperatures of 1065 degrees C. The non-pressure vessel ASTM B444 UNS N06625 grade has a thermal conductivity of 9.8 W/m-K while having a melting point between 1290 to 1350 degrees C. They generally have a hardness range between 32 to 40 HRC.
The Inconel 625 Seamless Pipe is the strongest grade of piping components in this grade. These versatile pipes are manufactured by passing hot steel billets through an extruded metal grade and shaping them. In the Inconel 625 Seamless Tubing, there is no presence of seams or welds on the cross-section of the grade. This gives its superior load-bearing capacity and strength. The special material required to produce this tubing makes the item very expensive. The price of the 625 alloy grades in Europe and the USA starts at $47.97; however, in India, the price starts at $42.64. Contact us to book your products or learn more about their characteristics and features.

Inconel 625 Pipe Specification
| ASTM Specification | ASME SB 167 ASTM B 167 / ASME SB 829 ASTM B 829 / ASME SB 517 ASTM B 517 |
| AMS | AMS 5599, AMS 5581, AMS 5666 |
| Manufacturing Type | ERW / Seamless /Welded /CDW / Fabricated / CDS / CEW / DOM / 100% X Ray Welded |
| Thickness Range | SCH5, SCH10, SCH80S, SCHXXH, SCHXS SCH40, SCH80, SCH160, SCHXXS |
| Standard | DIN, JIS, ASTM, GB, EN AISI, SUS, |
| Inconel 625 Pipes annealed Condition Grades | UNS N06625 cold-worked seamless pipe are furnished in :
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| Value Added Services |
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| END | Beveled End, Plain End, Treaded UNS N06625 Pipes |
| Marking |
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| Test Certificate |
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Inconel 625 Tube Mechanical Properties
| Alloy | Elongation (% in 50mm) min | Yield Stress 0.2% Proof (MPa) min | Tensile Stress (MPa) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 625 | 42.5 | MPa - 517, Psi - 75,000 | MPa -930, Psi - 1,35,000 | - | - |
Equivalent Grades Of Inconel 625 Exhaust Tubing
| Alloy | Old British | UNS No | Euronorm | Japanese JIS | GOST | ||
| BS | En | No | AFNOR | ||||
| Inconel 625 | NA 21 | NiCr22Mo9Nb | N06625 | 2.4856 | NC22DNB4M | NCF 625 | ХН75МБТЮ |
Inconel 625 Seamless Pipe Chemical Composition
| Element | C | Mn | Si | Fe | S | Cr2 | Al-Ti | Ni |
| min. | - | - | - | - | - | 20.0 | - | 58.0 |
| max. | 0.10 | 0.50 | 0.50 | 5.0 | 0.015 | 23.0 | 0.40 | - |
| INCONEL GRADE | TYPE | DIMENSION |
|---|---|---|
| ALLOY 625 (22 Cr/61 Ni/9 Mo) | Pipes; smls, annealed, pickled | 33.40 x 3.38 milimeter (1"nb sch40s) |
| INCONEL 625 (22 Cr/61 Ni/9 Mo) | Pipes; smls, ground, cold drawn, annealed | 60.33 x 3.91 milimeter (2"nb Sch40s) |
| ALLOY 625 (22 Cr/61 Ni/9 Mo) | Pipes; smls and annealed | 4.50 x 0.75 milimeter |
| INCONEL 625 (22 Cr/61 Ni/9 Mo) | Pipes; welded and bright solution annealed | 60.33 x 2.77 milimeter (2"nb sch10s) |
Inconel 625 Seamless Tubing Standards
| SIZES MM |
MAXIMUM INTERNAL PRESSURE, KSI |
||||||
|---|---|---|---|---|---|---|---|
| 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 700°F | |
| 1.59 X 0.36 | 19.21 | 19.21 | 19.02 | 18.83 | 18.54 | 18.15 | 17.77 |
| 3 X 0.5 | 940 | 940 | 930 | 921 | 907 | 888 | 869 |
| 6 X1 | 940 | 940 | 930 | 921 | 907 | 888 | 869 |
| 8X1 | 681 | 681 | 675 | 668 | 658 | 644 | 630 |
| 8X2 | 1476 | 1476 | 1462 | 1447 | 1425 | 1395 | 1366 |
| 10X1 | 534 | 534 | 529 | 524 | 516 | 505 | 494 |
| 12X1 | 440 | 440 | 435 | 431 | 424 | 415 | 407 |
| 16X1 | 324 | 324 | 321 | 318 | 313 | 307 | 300 |
| Inconel 625 Pipes | 1.4 |
Test Certificate Of Ams 5581 Tubing

AMS 5581 Pipe

Inconel 625 Exhaust Tubing

Inconel 625 Seamless Pipe

AMS 5581 Tubing

625 Pipe

Inconel 625 Seamless Tubing

B444 N06625 Welded Pipes

Astm B444 Inconel 625 Erw Pipe

Inconel 625 Pipe

Inconel 625 Tube

Alloy 625 Pipe

Alloy 625 Tube

Inconel 625 Tubing

Inconel Pipe

Inconel Tube
Physical Properties Of Astm B444 Inconel 625 Erw Pipe
| Density | lb/cu in | 0.305 |
|---|---|---|
| gram/cc | 8.44 | |
| Melting Range | °F | 2350 |
| °C | 1290 | |
| Specific Heat | Btu/lb°F (J/kg°C) | |
| 0°F (-18°C) | 0.096(402) | |
| 70°F (21°) | 0.098(410) | |
| 200°F (93°C) | 0.102(427) | |
| 400°F (204°C) | 0.109(456) | |
| 600°F (316°C) | 0.115(481) | |
| 800°F (427°C) | 0.122(511) | |
| 1000°F (538°C) | 0.128(536) | |
| 1200°F (649°C) | 0.135(565) | |
| 1400°F (760°C) | 0.141(590) | |
| 1600°F (871°C) | 0.148(620) | |
| 1800°F (982°C) | 0.154(645) | |
| 2000°F (1093°C) | 0.160(670) | |
| Permeability | at 200 Oersted (15.9 kA/m) | 1.0006 |
| Curie Temperature | °F | <-320 |
| °C | -196 |
| Description | Per Unit (INR) |
|---|---|
| NEW PIPES, 1-1/4 S/40, SB-444 GR.1 SEAMLESS, ANNEALED,INCONEL 625 [3 NOS] | 40 |
| INCONEL 625 SMLS PIPE SIZE:25NBxSCH.XXS,CONFIRMING TO ASTM B-444 UNS N06625,GRADE 1 (6.08 MTR) (NICKEL ALLOY PIPES) | 6,998 |
| NICKEL ALLOY DEFECTIVE SEAMLESS PIPES GRADE INCONEL 625 | 759 |
| NICKEL ALLOY DEFECTIVE WELDED PIPES GRADE INCONEL 625 | 749 |
| NICKEL ALLOY PIPES - INCONEL 625 (UNSN06625) | 7,440 |
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