| Customization: | Available |
|---|---|
| Application: | Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry |
| Certification: | ISO9001 |
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Since the carbon content of 904L is very low (max. 0.020%), there is no precipitation of carbide under normal heat treatment and welding conditions. This eliminates the risk of intergranular corrosion that occurs after normal heat treatment and welding. Due to the high chromium-nickel-molybdenum content and the addition of copper, 904L stainless steel tubes can be passivated even in reducing environments such as sulphuric acid and formic acid. The high nickel content allows for a low corrosion rate in the active state. In the 0~98% concentration range of pure sulfuric acid, 904L can be used up to 40 ºC. In pure phosphoric acid in the concentration range of 0 to 85%, its corrosion resistance is very good. In industrial phosphoric acid produced by the wet process, impurities have a strong influence on corrosion resistance. In all kinds of phosphoric acid, 904L stainless steel tube corrosion resistance is better than ordinary stainless steel tubes. In the strong oxidizing nitric acid, compared with the high alloyed steel grades without molybdenum, the corrosion resistance is lower. In hydrochloric acid, 904L stainless steel tube use is limited to a lower concentration of 1-2%. In this concentration range. 904L stainless steel tube corrosion resistance is better than conventional stainless steel. 904L stainless steel tube has high resistance to pitting corrosion. In chloride solution, its crevice corrosion resistance is also very good. 904L stainless steel tube of high nickel content, reducing the corrosion rate in the pits and crevices. Ordinary austenitic stainless steel at temperatures above 60 ºC, in a chloride-rich environment for stress corrosion may be sensitive, by increasing the nickel content of stainless steel, can reduce this sensitivity. Due to the high nickel content, the 904L stainless steel tube has high resistance to stress corrosion rupture in chloride solutions, concentrated hydroxide solutions and hydrogen sulphide-rich environments.
904L Stainless Steel Seamless Pipe & Tube Specifications
| Specification | ASTM A312, A213, A249, A677 , ГОСТ 9941-81 |
| Grade | 904L , 06ХН28МДТ |
| Finishes | Annealing Pickling, Bright Annealing |
| NPS | 1/8″ - 24″ |
| Sch | Sch5 - Sch160 |
| Shapes | Round, U Bend, Coil Shape |
| Application | Heat Exchanger, Boiler, Condenser, Cooler, Heater |
| Grade | Ni | Cr | Mo | Cu | C | Mn | Si | P | S | Ti |
| 904L | 23 - 28 | 19 - 23 | 4.0 -5.0 | 1.0 - 2.0 | 0.02 | 2.0 | 1.0 | 0.045 | 0.035 | - |
| 06ХН28МДТ | 26 - 29 | 22 - 25 | 2.5 -3.0 | 2.5 - 3.5 | 0.06 | 0.8 | 0.8 | 0.035 | 0.020 | 0.5 - 0.9 |
904L Stainless Steel Mechanical Properties
| Grade | Tensile Strength, Min | Yield Strength, Min | Elognation | Hardness |
| 904L | 490 Mpa | 215 Mpa | 35% | 90 HRB Max |
| Grade | Density (Kg/M3) |
Elastic Modulus (GPa) |
Mean Co-Eff Of Thermal Expansion (Μm/M/°C) |
Thermal Conductivity (W/M.K) |
Specific Heat 0-100°C (J/Kg.K) |
Elec Resistivity (NΩ.M) |
|||
| 0-100°C | 0-315°C | 0-538°C | At 20°C | At 500°C | |||||
| 904L | 7900 | 190 | 15 | - | - | 11.5 | - | 500 | 952 |
Wenzhou Guohao Steel was established in 2008. We are ISO 9001:2015 approved manufacturer, having a state-of-the-art infrastructure facility for having smooth production process. It has successfully grown by focusing on serving customers across a range of high technology industries. One of our company strengths is its people, with many colleagues having been with the company from the beginning. This provides our customers with the benefit of a wealth of experience and industry knowledge. Guohao Steel now has the whole of manufactured stainless steel products to add to its already large range of High Performance Nickel Alloys.
Guohao Steel adhere to the high standards of integrity and compliance required, including:
We now stock and have direct access to a wide range of other materials, including stainless steels and nickel alloys. We supply and process pipes for numerous key industry sectors, collaborating with both small businesses and large international manufacturers across various countries. Due to our reputation for quality, reliability, and industry approvals, we are a well-regarded supplier in diverse sectors. Our delivery of long-term tangible benefits enables our customers to compete in today's challenging global marketplace.
In order to achieve our goals, we are improving our facilities and expanding our machinery to offer broader processing capabilities. Additionally, our investment extends to the growth and development of our teams, which represent our most valuable resource. We aim for our customers to receive the best experience and trust in the expertise, knowledge, and experience of our teams. As we continue looking towards the future, we rely on our core values to guide both decisions and actions.
1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.
2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.
3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.
4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.
5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.
6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.
7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.
8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.
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