Inconel material is well suited for extreme environments as they can withstand oxidation and corrosion.This is especially true when the inconel tubes are subjected to heat and pressure.On heating, the tubes form a stable and thick passivating layer on the surface, which protects the material from further attack.
Inconel can retain its strength for a wide temperature range.This is why the inconel hypodermic tubings are preferred for high temperature applications.Due to its high strength and hardness, it can get difficult to fabricate or machine Inconel.
Thus, traditional cold forming techniques should not be used to machine the tubes as they have a high work hardening rate.The thin wall Inconel tubing can display good resistance to chloride pitting and fatigue stress.They also possess high creep rupture strength and oxalic resistance.
Inconel tubing
Inconel seamless tubing
Inconel exhaust tubing
Size | Thickness | Length |
---|---|---|
1/18 to 1 inch OD 3mm to 25mm OD | 0.50 to 8.56 mm | 3 to 6 meter |
Specification | Grades | Application |
ASTM B163/ B167/ AMS 5580/ S 3074 | inconel 600, 601, 625, 718, 617, x-750 | Aerospace and jet engine |
Form | Condition | Certification |
Straight, Coiled and seamless, welded, ERW | Hard (Y) / Soft (M) | MTC 10204 3.1 and 3.2 |
Inconel welded tube
Inconel square tubing
Inconel gas tube
Nickel Alloys | Werkstoff No. | UNS no. | Density (8.8 g/cm3) | Tradename |
---|---|---|---|---|
Alloy 718 | 2.4668 | N07718 | 8.19 | Inconel 718 |
Alloy 601 | 2.4851 | N06601 | 8.2 | Inconel 601 |
Alloy 625 | 2.4856 | N06625 | 8.44 | Inconel 625 |
Alloy 600 | 2.4816 | N06600 | 8.42 | Inconel 600 |
Inconel 625 | Inconel 600 | Inconel 718 | Inconel 601 | |
---|---|---|---|---|
Yield strength – Mpa | 345min. | 240min. | 550 min. | 300min. |
Density | 8.4 g/cm³ | 8.4 g/cm³ | 8.2 g/cm³ | 8.1g/cm³ |
Tensile strength – Mpa | 760min. | 550min. | 965min | 650min. |
Brinell hardness (HB) | ≤220 | ≤195 | ≤363 | ≤220 |
Elongation % | 30 min. | 30min. | 30 min. | 30 min. |
Melting Range,℃ | 1290-1350℃ | 1370-1425 ℃ | 1260-1340 ℃ | 1320-1370℃ |
Inconel | Element (% by mass) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Co | Mo | Fe | Cr | Nb | Ni | Ti | Mn | Al | Cu | Si | S | C | B | P | ||
625 | 1.0 | 8.0-10.0 | 5.0 | 20.0-23.0 | 3.15-4.15 | 58.0 | 0.4 | 0.5 | 0.4 | 0.5 | 0.015 | 0.1 | 0.015 | |||
600 | 6.0-10.0 | 14.0-17.0 | 72.0 | 1.0 | 0.5 | 0.5 | 0.015 | 0.15 | ||||||||
718 | 1.0 | 2.8-3.3 | balance | 17.0-21.0 | 4.75-5.5 | 50.0-55.0 | 0.3 | 0.35 | 0.65-1.15 | 0.2-0.8 | 0.35 | 0.015 | 0.08 | 0.006 | 0.015 | |
617 | 10.0-15.0 | 8.0-10.0 | 3.0 | 20.0-24.0 | 44.2-56.0 | 0.6 | 0.5 | 0.8-1.5 | 0.5 | 0.5 | 0.015 | 0.15 | 0.006 | 0.015 | ||
X-750 | 1.0 | 5.0-9.0 | 14.0-17.0 | 0.7-1.2 | 70.0 | 2.25-2.75 | 1.0 | 0.4-1.0 | 0.5 | 0.5 | 0.01 | 0.08 |
ID | Max. Pressure | OD | Wall Thick. |
Temper Rating |
1 ft. | 3 ft. | 6 ft. |
---|---|---|---|---|---|---|---|
0.055" | 9,000 psi @ 72° F | 1/8" | 0.035" | Soft | $12.46 | $34.89 | $62.30 |
0.18" | 4,900 psi @ 72° F | 1/4" | 0.035" | Soft | 20.29 | 56.82 | 101.46 |
0.257" | 2,900 psi @ 72° F | 5/16" | 0.028" | Soft | 23.31 | 65.27 | 116.56 |
0.305" | 3,000 psi @ 72° F | 3/8" | 0.035" | Soft | 26.69 | 74.73 | 133.44 |
0.37" | 4,200 psi @ 72° F | 1/2" | 0.065" | Soft | 53.27 | 149.16 | 266.35 |
0.277" | 4,300 psi @ 72° F | 3/8" | 0.049" | Soft | 33.83 | 94.72 | 169.15 |
0.87" | 2,100 psi @ 72° F | 1" | 0.065" | Soft | 77.70 | 217.57 | 388.52 |
0.555" | 1,800 psi @ 72° F | 5/8" | 0.035" | Soft | 55.47 | 155.30 | 277.33 |
0.43" | 2,200 psi @ 72° F | 1/2" | 0.035" | Soft | 47.73 | 133.66 | 238.67 |
0.62" | 2,800 psi @ 72° F | 3/4" | 0.065" | Soft | 71.33 | 199.74 | 356.67 |
0.569" | 1,400 psi @ 72° F | 5/8" | 0.028" | Soft | 37.44 | 104.84 | 187.22 |
0.834" | 2,700 psi @ 72° F | 1" | 0.083" | Soft | 167.96 | 470.30 | 839.82 |
USA | AISI | Acronym of American Iron and Steel Institute |
USA | ASTM | Ameirican Society of Mechanical Engineers |
GER | DIN | Deutsches Institut für Normung e.V. |
JP | JIS | Japanese Industrial Standards |
USA | UNS | Unified Numbering System |
WALL | DIMENSIONS | WEIGHT PER | WALL | DIMENSIONS | WEIGHT PER |
---|---|---|---|---|---|
(MM) | (MM) | METRE (KG) | (MM) | (MM) | METRE (KG) |
1.50 | 12.7 x 12.7 | 0.55 | 1.50 | 40 x40 | 1.85 |
1.20 | 12.7 x 12.7 | 0.44 | 1.20 | 40 x40 | 1.49 |
1.50 | 15 x 15 | 0.65 | 3.00 | 40 x40 | 3.75 |
1.20 | 15 x 15 | 0.53 | 2.00 | 40 x40 | 2.45 |
1.20 | 20 x 20 | 0.71 | 1.50 | 50 x50 | 2.32 |
2.00 | 20 x 20 | 1.19 | 3.00 | 50 x50 | 4.65 |
1.50 | 20 x 20 | 0.88 | 2.00 | 50 x50 | 3.08 |
1.20 | 25 x 25 | 0.92 | 2.00 | 60 x60 | 3.71 |
2.00 | 25 x 25 | 1.49 | 3.00 | 70 x70 | 6.53 |
1.50 | 25 x 25 | 1.14 | 3.00 | 60 x60 | 5.49 |
3.00 | 25 x 25 | 2.20 | 2.00 | 80 x80 | 4.98 |
1.50 | 30 x 30 | 1.37 | 2.00 | 100 x 100 | 6.40 |
1.20 | 30 x 30 | 1.10 | 3.00 | 80 x80 | 7.53 |
3.00 | 30 x 30 | 2.72 | |||
2.00 | 30 x 30 | 1.84 | 3.00 | 100 x 100 | 9.53 |
THICKNESS RANGE (INCH) | GAUGE | TYPICAL VALUE (INCH) |
---|---|---|
0.031 - 0.035 inch | 20 | 0.035 |
0.175 - 0.185 inch | 7 | 0.18 |
0.025 - 0.029 inch | 22 | 0.028 |
0.044 - 0.049 inch | 18 | 0.049 |
0.038 - 0.042 inch | 19 | 0.042 |
0.053 - 0.058 inch | 17 | 0.058 |
0.066 - 0.074 inch | 15 | 0.072 |
0.060 - 0.065 inch | 16 | 0.065 |
0.075 - 0.085 inch | 14 | 0.083 |
0.101 - 0.111 inch | 12 | 0.109 |
0.087 - 0.097 inch | 13 | 0.095 |
0.112 - 0.122 inch | 11 | 0.12 |
0.140 - 0.150 inch | 9 | 0.148 |
0.126 - 0.136 inch | 10 | 0.134 |
0.157 - 0.167 inch | 8 | 0.165 |
WALL THICKNESS INCHES | O.D.INCHES | O.D.+/- INCHES |
---|---|---|
.025 to .065 | 1 to 1-1/2" incl. | .008 |
Over .065 to .134 | .010 | |
.025 to .065 | 1/2" to 1" incl. | .005 |
Over .065 to .134 | .010 | |
.083 to .165 | 3-1/2" to 5" incl. | .020 |
Over .165 to .220 | .025 | |
.032 to .065 | 2" to 2-1/2" incl. | .012 |
Over .065 to .109 | .013 | |
Over .109 to .165 | .014 | |
.025 to .049 | 1-1/2" to 2" incl. | .010 |
Over .049 to .083 | .011 | |
Over .083 to .148 | .012 | |
.032 to .165 | 2-1/2" to 3-1/2" incl. | .014 |
Over .165 to .220 | .020 |
Argon is the most commonly used shielding gas for welding inconel welded tubes.Sometimes, an argon-hydrogen mixture might also be used, based on specific welding requirements.
This is applicable for both GTAW and GMAW welding techniques.