Leading stainless steel coil Suppliers in China

Daxun has been engaged in international business for more than ten years. In 2023, its export revenue exceeded US$100 million, and its export volume ranked among the top Chinese stainless steel manufacturers. Daxun continues to improve its service skills. In order to serve the global market, we have established three export service facilities in China and cooperated with engineering enterprises, steel mills and international trading companies. Daxun provides stainless steel chain services and has established long-term cooperative relationships with dozens of well-known steel mills around the world. Its inventory includes 50,000 tons of conventional stainless steel coils and 20,000 tons of duplex steel, nickel-based alloys, heat-resistant steel and other metals. Daxun’s stainless steel materials are of consistent quality. Types, specifications and delivery weights strictly comply with standards.

GENERAL PROPERTIES

• Grade 430 is a ferritic, straight chromium, non-hardenable grade that combines excellent corrosion resistance and formability with usable mechanical properties. Because of its resistance to nitric acid assault, it can be used in a variety of chemical applications, but automobile trim and appliance components are the most common.
• Grade 430F is the free-machining version of this grade, which comes in bar form for use in automatic screw machines. Grade 434 is the molybdenum-bearing counterpart of Grade 430, with the same useful set of characteristics. The molybdenum component increases corrosion resistance.
• ASTM A240/A240M specifies the characteristics of 430 for flat rolled products (plate, sheet, and coil). Other products, like as forgings and bar, have similar but not identical qualities, according to their specifications. The properties of Grade 430F are given for bar in ASTM A582.

Features of 430 stainless steel coils

430 stainless steel coil is the ferrite stainless steel which is used in a variety of applications due to its strength and ductility.

Features of 430 Stainless Steel Coils:

• High Strength
• Easy Formability
• Excellent Corrosion Resistance
• Good Weldability
• Resistance to Stress Corrosion Cracking (SCC)

APPLICATIONS：

Typical applications for 430 grade include:

• Linings for dish washers
• Refrigerator cabinet panels
• Automotive trim
• Lashing Wire
• Element Supports
• Stove trim rings
• Fasteners
• Chimney Liners

Typical applications for 430F grade include:

• Repetition machined components

SPECIFICATIONS:

• UNS: ASTM/ASTE S43000
• DIN：1.4016

CORROSION RESISTANCE：

• Grade 430 material exhibits good resistance to a wide range of corrosive environments such as nitric acid and some organic acids. ​​​​​​Highest levels of corrosion resistance are achieved when highly polished or ground. Overall, its resistance to pitting and crevice corrosion is comparable to that of grade 304. Like all ferritic grades, 430 exhibits very high resistance to stress corrosion cracking.
• The non-free machining grade, 430F, exhibits significantly reduced resistance to pitting and crevice corrosion, as do the other high sulfur free machining grades.

HEAT RESISTANCE：

• Up to 870°C in intermittent service and 815°C in continuous service, grade 430 resists oxidation. This grade may require extended heating in the 400–600°C range before becoming brittle at room temperature. Annealing can be used to get rid of this effect.

HEAT TREATMENT：

• Solution Annealing – Heat to 815-845°C, hold for ½ hour per 25mm of thickness, slow furnace cool to 600°C and then quickly air cool. Slow cooling from 540-400°C will cause embrittlement.
• Sub-Critical anneal – Heat to 760-815°C and then air cool or water quench.
• This grade is not hardenable by thermal treatment.

WELDING：

• Pre-heat at 150-200°C if welding is necessary.
• Embrittlement in the weld metal and heat affected zone can be relieved by a post-weld anneal at 790-815°C
• Grain refinement will not occur.

MACHINING：

• Easier to machine than the standard austenitic grades such as 304.
• Still a tendency for galling and pick-up on the cutting tool.
• Bars that have been lightly drawn are easier to machine than those in the annealed condition.
• Grade 430F, the free machining version of 430, is very much easier to machine.

FABRICATION：

• Lower work hardening rate makes bending and forming somewhat easier than for grade 304
• Lower ductility restricts very severe operations.
• Severe bends should be made with the bend axis at right angles to the rolling direction.
• Severe cold heading of 430 wire is possible.

What are the commonly used surfaces of stainless steel coils?

The surface finish of 201 stainless steel coil might vary depending on the cold rolling processing methods used and the surface treatment used after rolling. Surface treatments for stainless steel coils include NO.1, 2B, 4, HL, 6, 8, BA, TR hard, heavy rolling bright 2H, polished bright, and other surface treatments:

• NO.1: The surface obtained after hot rolling, heat treatment and pickling of stainless steel strip. It is used to remove the black oxide scale formed by pickling or similar processes during hot rolling and heat treatment. It ranks first in surface treatment. The No. 1 surface is silvery white and matte. It is generally used in heat-resistant and corrosion-resistant industries that do not require high surface gloss, such as the alcohol industry, chemical industry, large containers, etc.
• 2B: Unlike the 2D surface, the 2B surface is smoothed by a light roller, and the surface is brighter. The surface roughness Ra value measured by the equipment ranges from 0.1 to 0.5μm, which is a typical value for most processing types. This stainless steel strip surface has the strongest adaptability and is suitable for industries such as chemical, papermaking, petroleum, medical, and a wide range of fields such as building curtain walls.
• TR hard surface: TR stainless steel is also called hard steel. Its characteristic steel grades include 304 and 301, which are used for items that require high strength and hardness, such as railway vehicles, conveyor belts, springs and washers. The idea is to use the work hardening characteristics of austenitic stainless steel to improve the strength and hardness of steel plates through cold working methods such as rolling. In order to replace the gentle flatness of the 2B base surface, the hard material is gently rolled by a few percent to tens of percent, and no annealing is performed after rolling. Therefore, the TR hard surface of the hard material is the rolled surface after the cold rolling process.
• Re-rolled bright 2H: After the rolling operation, the stainless steel strip will be bright annealed. A continuous annealing line can be used to quickly cool the strip. The stainless steel strip travels along the line at a speed of 60-80m/min. After this process, the surface finish will be 2H re-rolled bright.
• No. 4: The No. 4 surface has a good polishing effect and is brighter than No. 3. It can also be obtained by polishing the cold-rolled stainless steel plate with a 2D or 2B surface, and then polishing the processed surface with a sanding belt with a particle size of 150-180#. The tool measures the surface roughness (Ra) between 0.2 and 1.5μm. The No. 4 surface is widely used in restaurants and cooking equipment, medical equipment, architectural decoration, containers and other applications.
• HL: The HL surface is often called a hairline finish. The Japanese JIS standard specifies a continuous hairline abrasive surface obtained by polishing with a 150-240# abrasive belt. The restrictions under the Chinese GB3280 standard are unclear. HL surface finish is commonly used for architectural decoration, such as elevators, escalators, and exterior walls.
• No. 6: The No. 6 surface is further polished on the basis of No. 4 with a Tampico brush or a W63 grit abrasive material specified in the GB2477 standard. The surface has good metallic luster, softness, weak reflection, and no imaging. Due to its good performance, it is very suitable for curtain walls, tassel decoration, and cooking supplies.
• BA: BA is a surface that is brightly heat treated after cold rolling. Bright heat treatment is annealing in a protective atmosphere to ensure that the surface is not oxidized and retain the gloss of the cold-rolled surface, and then it is polished with a high-precision smooth roller to improve the surface brightness. The instrument evaluates the surface roughness to be 0.05-0.1μm, indicating that the surface is close to a mirror surface. BA surfaces can be used in a variety of applications, including food utensils, household appliances, medical equipment, automotive parts, and decorations.
• No. 8: Mirror surface, maximum reflectivity, no abrasive particles. The stainless steel deep processing industry also refers to 8K board. BA material is often used as raw material for mirror processing. It only needs to be polished. The surface is beautiful after mirror processing and is often used in building entrances and interior decoration.

What is the standard sea packaging  stainless steel coil?

• Standard export sea packaging:
  Waterproof Paper Winding+PVC Film+Strap Banding+Wooden Pallet or Wooden Case;
• Customized packaging as your request (Logo or other contents accepted to be printed on the packaging);
• Other special packaging will be designed as customer’s request;
  Eye to wall and eye to sky are both available;
• By International Express: DHL/UPS/FEDEX/EMS and our own express line;
• By air, sea or land;
• Shipping Port: Shanghai, Ningbo, Qingdao, Tianjin or as your request.

Why choose Daxun’s stainless steel coils？

Reliable Stainless Steel Coils and Sheets Inventory Guarantee

• Have you ever been in a situation where you required a significant quantity of stainless steel coils right away, only to discover that the supplier was running low on stock? This condition may impair your workflow and plans.
• Our Advantages: With us, this situation will be a thing of the past. Our inventory is always ample, guaranteeing that even the largest orders are fulfilled quickly and in accordance with your business schedule.

Custom Stainless Steel Material Processing

• You may have experienced a circumstance in which bespoke processing is required, but locating the correct supplier to match your exact requirements might be difficult.
• Our Advantages: We have great processing capabilities to satisfy any of your specific needs. Whether it is size, stainless steel surface treatment, or other unique requirements, we offer expert one-stop service.

Competitive Stainless Steel Prices

• When looking for a stainless steel coil provider, price is typically a major factor. You may have to make a compromise with your chosen supplier due to excessive costs.
• Our Advantages: We keep pricing low by implementing excellent cost control and improved sourcing methods. This implies that by choosing us, you will not only receive high-quality products but also outstanding value for money.

Various Specifications of Stainless Steel Coils in Stock

• Finding stainless steel coils with exact specifications might be a challenge. It is critical to select a supplier who understands and serves these specific needs.
• Our Advantages: Our portfolio demonstrates versatility, with a wide choice of materials, thicknesses, and widths. We take pleasure in our ability to satisfy your project’s exact specifications.

Precision Stainless Steel Shearing Service.

• Precision shearing is required for the usage of stainless steel coils, but not all vendors offer this precise service.
• Our Advantages: Our shearing service is both professional and efficient, delivering precise cuts that fit your exact demands.

Contact your stainless steel coil suppliers

• You can easily order stainless steel coils in any size and quantity online.
  Alternatively, our friendly sales team will be happy to take your order. Simply call +86 13382898899 or email Daxunhejin@gmail and we will get back to you as soon as possible.