SUS441 2D finish stainless steel coil strip
Leave a message
441 Stainless Steel Coil Stock, Stainless Steel 441 Coil Supplier in china
If you are seeking SUS441 stainless steel coils with 2D finish for applications such as automotive exhaust systems, heat exchangers, industrial piping, or high-temperature manufacturing, GNEE offers reliable solutions characterized by consistent quality and rapid global delivery. Our SUS441 coils are manufactured in strict accordance with ASTM A240, JIS G4305, and EN 10088 (1.4509) standards, featuring a uniform 2D matte finish, excellent weldability, and outstanding oxidation resistance at temperatures up to 900–950°C.
What is SUS441 2D finish stainless steel coil strip?
SUS441 2D finish stainless steel coil strip is a cold-rolled, dual-stabilized ferritic stainless steel containing roughly 18% chromium. Formed into a continuous wound strip with a dull, non-reflective 2D mill finish, it offers high heat resistance, good corrosion defense, and strength for industrial parts.
What is the difference between SUS441 2D and 2B finish?
The difference between SUS441 2D and 2B finishes lies in their final mill processing. Both start as cold-rolled, annealed, and acid-pickled stainless steel, but a 2B finish receives an extra light skin-pass using polished rolls. This makes 2B smoother and slightly reflective, while 2D is left with a dull, non-reflective matte texture.
What is the equivalent grade of SUS441?
| Standard | Grade |
|---|---|
| UNS | S44100 |
| EN | 1.4509 |
| AISI | 441 |
| JIS | SUS 441 |
| EN Material Name | X2CrTiNb18 |
Stainless Steel 441 Coil Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr |
|---|---|---|---|---|---|---|
| SS 441 | ≤0.030 | ≤1.00 | ≤0.040 | ≤0.015 | ≤1.00 | 17.50–18.50 |
Stainless Steel 441 Coil Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥490 MPa (71 ksi) |
| Yield Strength (0.2% Offset) | ≥310 MPa (45 ksi) |
| Elongation | ≥32% |
| Hardness | ≤78 HRB |
Stainless Steel 441 Coil Available Sizes
What thicknesses are available for SUS441 coil strip?
Can SUS441 be welded without post-weld heat treatment?
Yes, SUS441 (also known as EN 1.4509 or Grade 441) ferritic stainless steel can generally be welded without the need for post-weld heat treatment (PWHT). Thanks to stabilization with titanium and niobium (columbium) and its very low carbon content, the steel exhibits good resistance to sensitization and intergranular corrosion in the as-welded condition.
Applications of SUS441 2D Finish Stainless Steel Strip
Automotive systems: exhaust manifolds, catalytic converter housings, and muffler assemblies.
Industrial equipment: heat exchanger tubing, furnace components, and burner assemblies.
Deep-drawn parts: industrial housings, ring-shaped components, and stamped parts requiring subsequent polishing or coating. Appliance components: insulation parts for ovens and heavy-duty heating units.
Is SUS441 better than SUS430 for exhaust systems?
Yes, SUS441 is significantly better than SUS430 for automotive exhaust systems, specifically for high-heat components like manifolds, front pipes, and catalytic converter shells. While both are ferritic (magnetic) stainless steels, SUS441 is a specialized dual-stabilized grade containing Titanium (Ti) and Niobium (Nb), whereas standard SUS430 lacks these critical stabilizing elements.
441 Stainless Steel Coil Price List
| Product | Size (mm) | Grade | FOB Price (USD/Ton) | Monthly Trend (USD/Ton) | Remark |
|---|---|---|---|---|---|
|
400 Series Cold Rolled Stainless Steel Coil |
3.0 × 1240 × C | 436L / 2B | 1,580–1,650 | ▲20 | Mill Edge, Protected Annealing |
| 1.5 × 1240 × C | 441 / 2B | 1,620–1,690 | ▲25 | Mill Edge, Protected Annealing | |
| 2.0 × 1240 × C | 441 / 2B | 1,620–1,700 | ▲25 | Mill Edge, Protected Annealing | |
| 1.0 × 1240 × C | 441 / 2D | 1,590–1,660 | ▲20 | Mill Edge, Protected Annealing | |
| 3.0 × 1240 × C | 441 / 2D | 1,580–1,650 | ▲20 | Mill Edge, Protected Annealing | |
| 3.0 × 1240 × C | 439 / 2B | 1,600–1,670 | ▲20 | Mill Edge, Protected Annealing | |
| 2.0 × 1240 × C | 439 / 2B | 1,610–1,680 | ▲20 | Mill Edge, Protected Annealing | |
| 0.8 × 1240 × C | 441 / 2B | 1,640–1,720 | ▲30 | Mill Edge, Protected Annealing | |
| 3.0 × 1240 × C | 409L / 2D | 1,500–1,570 | ▲15 | Mill Edge, Protected Annealing | |
| 0.6 × 1240 × C | 441 / 2D | 1,680–1,760 | ▲35 | Mill Edge, Protected Annealing |
Price Basis: China FOB, based on orders of 20–100 metric tons.
Thin gauges (0.6–0.8 mm) are typically USD 50–100/ton higher than standard gauges due to higher rolling difficulty and lower production yield.
2B finish generally commands a premium of USD 20–40/ton over 2D finish because of additional bright annealing and skin-pass processing.
Lead Time & Delivery
In-Stock Items: 3 – 7 working days for standard widths (1000mm/1219mm).
Slitting/Processing: 7 – 10 days if we need to slit mother coils into specific strip widths.
New Production: 25 – 40 days if the specific thickness is out of stock and requires a new melt run from the mill.
Quality Control
Chemical composition analysis: Verification of Chromium (Cr, 17.5–19.5%), Titanium (Ti), and Niobium (Nb) content using a spectrometer.
Mechanical property testing: Includes tensile strength, yield strength, and elongation.
Hardness testing: Typically measured using HRB or HV scales (critical for stamping/forming performance).
Dimensional inspection: Use of digital micrometers to check thickness uniformity and width accuracy.
Surface inspection: Checking for pickling defects, scratches, or "coil breaks."
Certificates and Documentation
Each shipment is accompanied by the following documents:
MTC (Mill Test Certificate): Compliant with EN 10204 3.1 standards, detailing the heat number, chemical composition, and physical properties.
ISO 9001:2015: Factory Quality Management System certification.
Compliance Reports: RoHS and REACH compliance certificates (mandatory for automotive and home appliance exports).
Stainless Steel Coil Packaging
Vertical (Eye-to-Sky): The most common method for narrow steel strips. Coils are stacked on wooden pallets and separated by spacers.
Horizontal (Eye-to-Wall): Suitable for larger or wider steel coils.
Protective Measures: Each coil is wrapped in VCI (Volatile Corrosion Inhibitor) paper or anti-rust plastic film and secured with steel strapping.
Coil Core Material: Depending on your uncoiling equipment requirements, we offer various options, including paper cores, steel cores, or coreless (mandrel-type) configurations.
