Basic Info.
Model NO.
Al-6xn tube/pipe
Type
Stainless Steel Pipes
Standard
ASTM, AISI, GB, JIS, DIN, EN
Certification
ISO, AISI, ASTM, GB
Surface Treatment
Pickling
Key Words
Al-6xn Tube/Pipe
Outside Diameter
4.0 - 1219mm
Length
as Your Requirments
Diameter Tolerance
H9, H11, H13, K9, K11, K13 etc
Surface
Lack, Peeled, Polishing, Bright, Sand Blast, Hl
Product Description
Product Description
Introduction
AL-6XN (UNS N08367) is a 6% molybdenum (6 Moly), low carbon, nitrogen-bearing super-austenitic stainless alloy. The alloy was originally designed for seawater applications. AL-6XN has also been successfully used in a broad range of very corrosive environments including the rapidly developing biopharm markets.
The high strength and corrosion resistance of the AL-6XN alloy make it a better choice than the conventional duplex stainless steels and a cost effective alternative to more expensive nickel-base alloys where excellent formability, weldability, strength and corrosion resistance are essential.
Duplex Stainless AL-6XN Applications
▪ FGD scrubbers
▪ Reverse osmosis desalination
▪ Distillation columns
▪ Heat exchangers
▪ Biopharm tanks and fermenters
▪ Pressure vessels
▪ Manways
▪ Agitators and mixers
▪ Seawater coolers in nuclear plants
Specifications
1.UNS Number:N08367
2.Standards:ASTM A182, A240,A249, A276, A312, A479, B462, B472, B564, B675, B676, B688, B690, B691, B366, B804
Super Stainless AL-6XN Chemical Composition
| C | Mn | Si | Cr | Ni | Mo | P | S | Cu | N |
| 0.03 max | 2.0 max | 1.0 max | 20.0-22.0 | 23.5-25.5 | 6.0-7.0 | 0.04 max | 0.03 max | 0.75 max | 0.18-0.25 |
Super Stainless AL-6XN Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength (min) | 770 MPa | 112 ksi |
| Yield strength (min) | 393 MPa | 57 ksi |
| Elongation (min) | 44% | 44% |
| Hardness, Brinell (max) | Rb 88 | Rb 88 |
Corrosion resistance
General corrosion
The following table lists the comparison results of the corrosion resistance of 022Cr21Ni25Mo7N, 00Cr20Ni24Mo6N, AL-6XN stainless steel in some acid media, 316L stainless steel , 317L stainless steel , 904L stainless steel and the famous nickel-based corrosion-resistant alloy Hastelloy C-276 . Obviously, the corrosion resistance of (00Cr20Ni24Mo6N) AL-6XN stainless steel is not only better than these stainless steels, but also better than or equal to C-276 Hastelloy alloy.
| (00Cr20Ni24Mo6N) General Corrosion Resistance of AL-6XN Stainless Steel |
| Test solution (boiling) | Corrosion rate/mm·a -1 |
| 316L | 317L | 904L | AL-6XN | C-276 |
| 20% acetic acid | 0.03 | 0.01 | 0.02 | 0.063 | 0.01 |
| 45% Formic acid | 0.06 | 0.47 | 0.2 | 0.06 | 0.07 |
| 10% oxalic acid | 1.23 | 1.14 | 0.69 | 0.19 | 0.28 |
| 20% Phosphoric Acid | 0.02 | 0.02 | 0.01 | 0.006 | 0.009 |
| 10% Sodium Sulfite | 1.82 | 1.42 | 0.23 | 0.19 | 0.45 |
| 5% Sodium Hydroxide | 1.92 | 0.83 | 0.24 | 0.19 | 0.45 |
| 10% sulfuric acid | 16.15 | 7.58 | 2.53 | 1.83 | 0.35 |
In sulfuric acid and hydrogen chloride, 022Cr21Ni25Mo7N, 00Cr20Ni24Mo6N, AL-6XN stainless steels are better than the tested 904L stainless steel and 654SMO stainless steel, but their use range in sulfuric acid with high chloride ion concentration, especially in hydrochloric acid, is still very narrow, only better than 904L stainless steel, but lower than another 7% Mo type super austenitic stainless steel 654SMO. In hydrogen chloride, the corrosion resistance of (00Cr20Ni24Mo6N) AL-6XN stainless steel is still lower than that of 654SMO stainless steel , but better than other stainless steel grades including the tested 2507 super duplex stainless steel .Pitting The pitting corrosion resistance of 022Cr21Ni25Mo7N, 00Cr20Ni24Mo6N, AL-6XN stainless steel (evaluated by pitting potential and critical pitting temperature) was compared with other stainless steels and 625 alloy ( Inconel 625 ) and G3 alloy ( Hastelloy G3 ). It was found that under the test conditions, the pitting corrosion resistance of (00Cr20Ni24Mo6N) AL-6XN stainless steel was better than that of 316L stainless steel, 317L stainless steel, and 904L stainless steel, but similar to that of G3 alloy, and lower than that of 625 alloy. In 6% FeCl3 solution, the pitting corrosion resistance (critical pitting temperature) of AL-6XN stainless steel and other stainless steels before and after welding (TIG welding without wire filling) (00Cr20Ni24Mo6N) is better than the influence of welding. The pitting corrosion resistance of AL 6XN stainless steel decreases after welding, but compared with grades with lower molybdenum content (316L stainless steel, 317L stainless steel and 904L stainless steel), AL 6XN stainless steel with high molybdenum content and nitrogen is still the best. Crevice corrosion By comparing the toughness curves of (00Cr20Ni24Mo6N) AL-6XN stainless steel, it can be seen that the reduction in corrosion resistance (pitting and crevice corrosion resistance) of AL-6XN stainless steel occurs before the toughness of this steel decreases, especially at lower temperatures; the corrosion resistance of AL 6XN stainless steel decreases significantly at about 700°C, and this trend is suppressed when the temperature is ≥ 927°C. | Critical crevice corrosion temperature of (00Cr20Ni24Mo6N)AL-6XN in 6% ferric chloride solution Unit: °C |
| (00Cr20Ni24Mo6N)AL-6XN | Test material grade |
316L Stainless Steel | 825 Alloy | 317L Stainless Steel | 904L stainless steel | 2205 Duplex Steel | EB 26-1 | G Alloy | 625 Alloy | C-276 Alloy |
| 43 | -3 | -3 | 2 | 15 | 20 | twenty one | 30 | 38 | 55 |
In 6% FeCl 3 solution, the critical crevice corrosion temperature of (00Cr20Ni24Mo6N) AL-6XN stainless steel was compared with other stainless steels and corrosion-resistant alloys. It was found that the critical crevice temperature of AL-6XN stainless steel was as high as 43°C, only lower than the nickel-based corrosion-resistant alloy C-276 (00Cr16Ni60Mo16W4). This result shows that AL-6XN stainless steel has good crevice corrosion resistance under the test conditions. | Initial conditions for crevice corrosion of AL-6XN (00Cr20Ni24Mo6N) in critical crevice corrosion solution |
| Material grade | UNS Number | pH | Chloride concentration |
| Concentration/mol·L -1 | ppm | Compared with seawater |
| 430 | S43000 | 2.9 | 1.0 | 35000 | 1.84 |
| 304 | S30400 | 2.1 | 2.5 | 88750 | 4.68 |
| 316 | S31600 | 1.7 | 4.0 | 142000 | 7.48 |
| 904L | N08904 | 1.3 | 4.0 | 142000 | 7.48 |
| AL 6XN | N08867 | <1.0 | 6.0 | 213000 | 11.22 |
| 625 Alloy | N06625 | 0.0 | 6.0 | 213000 | 11.22 |
The conditions for crevice corrosion of (00Cr20Ni24Mo6N) AL-6XN stainless steel and 625 alloy were tested in a critical crevice corrosion solution. The test results show that the conditions for crevice corrosion of AL-6XN stainless steel and nickel-based corrosion-resistant alloy are equivalent, that is, they have similar crevice corrosion resistance.
Intergranular corrosion
Since (00Cr20Ni24Mo6N) AL-6XN stainless steel generally contains only about 0.02% carbon, there is little precipitation of chromium carbides. However, when the hot working, heat treatment and welding processes are improper, there is still a risk of intergranular corrosion due to the precipitation of metal phases and Cr2N along the grain boundaries.
The following table shows the intergranular corrosion data of steel obtained by different intergranular corrosion test methods. It can be seen that the corrosion rate difference between ultra-low carbon austenitic stainless steel and super austenitic stainless steel is not significant except for ASTM A262 F method, but the corrosion rate of nickel-based corrosion-resistant alloy C-276 (00Cr16Ni60Mo16W4) is very high.
Available Sizes And Specifications
| AL-6XN stainless steel plate sizes and specifications |
| Grade | AL-6XN |
| Stainless steel seamless pipe | Outside diameter: 4.0 - 1219mm, Thickness: 0.5 -100mm, Length: 24000mm |
| Stainless steel welded pipe | Outside diameter: 6.0 - 2800mm, Thickness: 0.3 -45mm, Length: 18000mm |
| Stainless steel capillary pipe | Outside diameter: 0.4 - 16.0mm, Thickness: 0.1 -2.0mm, Length: 18000mm |
| Stainless steel welded sanitary pipe | Outside diameter:8.0- 850mm, Thickness: 1.0 -6.0mm |
| Stainless steel seamless sanitary pipe | Outside diameter: 6.0- 219mm, Thickness: 1.0 -6.0mm |
| Stainless steel square pipe | Side Length: 4*4 - 300*300mm, Thickness: 0.25 - 8.0mm, Length: 18000mm |
| Stainless steel rectangular pipe | Side Length: 4*6 - 200*400mm, Thickness: 0.25 - 8.0mm, Length: 18000mm |
| Stainless steel coil pipe | Outside diameter: 0.4 - 16mm, Thickness: 0.1 - 2.11mm |
| Standard | American Standard: ASTM A312, ASME SA269, ASTM A269, ASME SA213, ASTM A213 ASTM A511 ASTM A789, ASTM A790, ASTM A376, ASME SA335, B161, SB163, SB338, SB667/668 Germany Standard: DIN2462.1-1981, DIN17456-85, DIN17458-85· European Standard: EN10216-5, EN10216-2 Japanese Standard: JIS G3463-2006, JISG3459-2012 Russian Standard: GOST 9941-81 |
Surface Treatment
Packaging & Shipping
Company Profile
FAQ
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.
Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .
Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .
Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .
Address:
Erqi District, Shenglong Erqi Center, Building B, Zhengzhou, Henan, China
Business Type:
Manufacturer/Factory, Group Corporation
Business Range:
Metallurgy, Mineral & Energy
Company Introduction:
Lork Group is a supply chain management group focused on meeting the specialized specialty steel needs of strategic industries such as aerospace, biomedical, energy equipment, and semiconductor chips, providing clients with integrated solutions for full-lifecycle supply chain management.
We are not only a supplier of specialty steel materials, but also a precise connector between international demand for specialty steel and China's high-quality production capacity. Based on the principle of "Global Craftsmanship, Chinese Intelligent Manufacturing, " with end-to-end quality control at the core, we rigorously select suppliers and have been deeply engaged in China's special steel supply chain management industry for 15 years. We deeply integrate the cutting-edge technical standards of international specialty steel technology leaders with the efficiency of Chinese manufacturing, building a local supply chain matrix spanning East, North, and South China, becoming a super hub connecting international production processes with Chinese R&D and manufacturing.
Lork Group is committed to becoming a trusted, long-term, and valuable partner for the specialty steel industry, promoting the symbiotic and mutually beneficial relationship between international demand for specialty steel and China's high-end manufacturing.
Lork Group has been deeply engaged in the global specialty steel supply chain management industry for 15 years, serving over 2, 000 strategic clients in various industries, including aerospace, biomedical, energy equipment, and semiconductor chips, in over 50 major countries. Currently, the parent company oversees 11 wholly-owned subsidiaries, and has established an intelligent supply chain management matrix (Lork Select Supply Chain) for over 400 suppliers; A core set of over 5, 000 production and technical standards (covering seven major international standards); And over 1, 000 standard customer case studies. Lork is not only a witness to the transformation of the specialty steel industry, but also a builder of value in reshaping supply chain management.