18/8 Stainless Steel
18/8 Stainless Steel
Standard：AISI, ASTM, GB, JIS, SUS,EN
Delivery Time：Within 7 working days
Sample:Free sample
We provide a wide range of 18/8 stainless steel products, including sheet, plate, round bar, flat bar, square bar, and more, suitable for various industrial and decorative applications.
| Feature | Specification / Details |
|---|---|
| Standard | GB/T 20878-2007, ASTM 304, SUS 304 |
| Grade | 18/8 Stainless Steel, 304, 304L |
| Length | 1000–6000 mm (39.37–236.22 in), customizable |
| Diameter | Bars: 6–300 mm (0.24–12 in), customizable |
| Thickness | Plates: 6–100 mm (0.24–3.94 in); Sheets: 0.3–10 mm (0.01–0.39 in); customizable |
| Full Width | Sheets & Plates: 1000–2000 mm (39.37–78.74 in), customizable |
| Surface Finish | 2B, 2D, BA, Coated, Ground, Mill, No.1, No.4, Peeled, Polished, Turned |
| Form | Plate, Sheet, Round Bar, Flat Bar, Square Bar, Rectangular Bar, Coil, Cold-Rolled Plate, Hot-Rolled Sheet, Polished Plate, Tempered Sheet |
18/8 stainless steel plate is a durable and corrosion-resistant material with high tensile strength and excellent toughness. It is widely used in kitchen equipment, food processing machinery, architectural components, and industrial structures that require long-term reliability under various conditions.
18/8 stainless steel pipe/tube offers superior corrosion resistance, good weldability, and excellent pressure performance. It is commonly applied in plumbing, chemical processing, food and beverage transport, and structural piping systems where hygiene and durability are critical.
18/8 stainless steel bar combines high strength, toughness, and machinability. It is suitable for shafts, fasteners, gears, and other mechanical components requiring precise dimensions and resistance to wear and corrosion.
18/8 stainless steel coil/strip is a versatile material that can be easily processed into sheets, plates, or formed components. Its excellent surface finish and uniform properties make it ideal for kitchenware, decorative panels, and industrial applications requiring both aesthetics and performance.
| Element | Content (%) | Remark |
|---|---|---|
| Carbon (C) | ≤ 0.08 | Low-carbon to prevent intergranular corrosion |
| Chromium (Cr) | 18–20 | Provides corrosion resistance |
| Nickel (Ni) | 8–10.5 | Stabilizes austenitic structure, improves toughness |
| Manganese (Mn) | ≤ 2 | Improves smelting properties |
| Silicon (Si) | ≤ 1 | Improves oxidation resistance |
| Phosphorus (P) | ≤ 0.045 | Impurity, should be minimized |
| Sulfur (S) | ≤ 0.03 | Impurity, should be minimized |
| Iron (Fe) | Balance | Main matrix element |
| Property | Typical Value | Remark |
|---|---|---|
| Tensile Strength (σb) | 515–655 MPa | Room temperature |
| Yield Strength (σ0.2) | ≥ 205 MPa | Minimum yield |
| Elongation (δ5) | ≥ 40% | Measures ductility |
| Reduction of Area (ψ) | ≥ 60% | Measures plasticity |
| Impact Toughness (αk) | ≥ 160 J/cm² | Room temperature |
| Brinell Hardness (HBW) | ≤ 187 (annealed) | Cold working increases hardness to 240–280 |
| Thermal Conductivity | 16.3 W/(m·K) | At 20°C |
| Linear Expansion Coefficient | 17.2 ×10⁻⁶ /°C | 20–100°C |
Corrosion Resistance: 18/8 stainless steel sheet offers excellent corrosion resistance in a wide range of environments, including neutral water, mild acids, and weak alkaline solutions. It is suitable for applications in kitchenware, food processing equipment, architectural panels, and outdoor decorative components where durability and hygiene are critical.
Mechanical Properties: This material provides a balanced combination of tensile strength, yield strength, and toughness, making it ideal for structural components, precision parts, and industrial machinery. It maintains performance under both standard and moderately demanding load conditions.
Weldability: 18/8 stainless steel sheet has good weldability and can be joined using common welding methods such as TIG, MIG, and spot welding. Proper control of heat input ensures the integrity of the austenitic structure and preserves corrosion resistance.
Surface Treatment: The sheet can undergo various surface finishes, including brushed, polished, mirror, and passivated surfaces. These treatments enhance both aesthetics and functionality, making it suitable for decorative panels, appliance surfaces, and high-end industrial applications.
Cost-Effectiveness: While slightly higher in cost than 201 stainless steel due to nickel content, 18/8 stainless steel provides long-term value through durability, corrosion resistance, and low maintenance requirements, making it a reliable choice for high-performance applications.
| English Name | China GB/T | Japan JIS | USA AISI/UNS | Europe EN/DIN |
|---|---|---|---|---|
| Austenitic Stainless Steel 201 | 0Cr17Mn6Ni5N | SUS201 | AISI 201 / UNS S20100 | EN 1.4372 |
| Austenitic Stainless Steel 202 | 0Cr18Mn9Ni6N | SUS202 | AISI 202 / UNS S20200 | EN 1.4122 |
| Austenitic Stainless Steel 301 | 06Cr17Ni7 | SUS301 | AISI 301 / UNS S30100 | EN 1.4310 |
| Austenitic Stainless Steel 303 | 0Cr17Ni13Mo | SUS303 | AISI 303 / UNS S30300 | EN 1.4305 |
| Austenitic Stainless Steel 304 | 0Cr18Ni9 | SUS304 | AISI 304 / UNS S30400 | EN 1.4301 |
| Austenitic Stainless Steel 304L | 06Cr19Ni10 | SUS304L | AISI 304L / UNS S30403 | EN 1.4307 |
| Austenitic Stainless Steel 305 | 0Cr17Ni14Cu2 | SUS305 | AISI 305 / UNS S30500 | EN 1.4303 |
| Austenitic Stainless Steel 309S | 00Cr23Ni13 | SUS309S | AISI 309S / UNS S30908 | EN 1.4828 |
| Austenitic Stainless Steel 310S | 0Cr25Ni20 | SUS310S | AISI 310S / UNS S31008 | EN 1.4845 |
| Austenitic Stainless Steel 316 | 0Cr17Ni12Mo2 | SUS316 | AISI 316 / UNS S31600 | EN 1.4401 |
| Austenitic Stainless Steel 316L | 00Cr17Ni12Mo2 | SUS316L | AISI 316L / UNS S31603 | EN 1.4404 |
| Austenitic Stainless Steel 316Ti | 00Cr17Ni12Mo2Ti | SUS316Ti | AISI 316Ti / UNS S31635 | EN 1.4571 |
| Austenitic Stainless Steel 317 | 00Cr19Ni13Mo3 | SUS317 | AISI 317 / UNS S31700 | EN 1.4438 |
| Austenitic Stainless Steel 321 | 00Cr19Ni10Ti | SUS321 | AISI 321 / UNS S32100 | EN 1.4541 |
| Austenitic Stainless Steel 347 | 0Cr19Ni12Mo2Ti | SUS347 | AISI 347 / UNS S34700 | EN 1.4550 |
| Austenitic Stainless Steel 904L | ZG0Cr19Ni25Mo4Cu2 | SUS904L | AISI 904L / UNS N08904 | EN 1.4539 |
| Austenitic Stainless Steel 254SMO | ZG17Cr20Ni14Mo3Cu | SUS312L1 | AISI 254SMO / UNS S31254 | EN 1.4547 |
| Ferritic Stainless Steel 409 | 0Cr11Mo | SUS409 | AISI 409 / UNS S40900 | EN 1.4512 |
| Martensitic Stainless Steel 410 | 1Cr13 | SUS410 | AISI 410 / UNS S41000 | EN 1.4006 |
| Martensitic Stainless Steel 420 | 0Cr17Ni4Cu4Nb | SUS420 | AISI 420 / UNS S42000 | EN 1.4021 |
| Ferritic Stainless Steel 430 | 0Cr17 | SUS430 | AISI 430 / UNS S43000 | EN 1.4016 |
| Ferritic Stainless Steel 439 | 0Cr18Mn11Nb | SUS439 | AISI 439 / UNS S43900 | EN 1.4517 |
| Ferritic Stainless Steel 444 | 0Cr18Mn13Si | SUS444 | AISI 444 / UNS S44400 | EN 1.4521 |
| Ferritic Stainless Steel 446 | 0Cr25Mo4N | SUS446 | AISI 446 / UNS S44600 | EN 1.4762 |
| Martensitic Stainless Steel 416 | 0Cr13MoS4 | SUS416 | AISI 416 / UNS S41600 | EN 1.4005 |
| Duplex Stainless Steel 2205 | ZG2CrNiMo | SUS329J4L | UNS S32205 | EN 1.4462 |
| Duplex Stainless Steel 2304 | ZG0Cr23Ni5MoN | SUS329J1L | UNS S32304 | EN 1.4362 |
| Precipitation Hardening Stainless 17-4PH | ZG0Cr17Ni4Cu4Nb | SUS630 | UNS S17400 | EN 1.4542 |
| Martensitic Stainless Steel 431 | ZG1Cr17Ni2Mo | SUS431 | AISI 431 / UNS S43100 | EN 1.4057 |
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FAQ's
Do you provide product samples?
We can accept sample orders. Samples can be ordered by emailing your dedicated customer service representative.
What types of steel products do you offer?
We supply stainless steel sheets, coils, pipes, bars, profiles, as well as carbon steel and alloy steel materials in various grades and specifications.
Do you provide custom processing based on drawings
Yes. We support custom cutting, bending, flattening, polishing, and laser processing according to your drawings.
What is your minimum order quantity (MOQ)?
For standard stock items, small quantities are accepted. For customized products, MOQ usually starts from 1 ton. Please contact our sales team for specific details.
How long is your delivery time?
Standard products are typically delivered within 7working days. Custom orders generally require 7–15 working days depending on the specifications.
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Scaled
Different factories support the production, forging and other process sites of different steel materials.
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Advanced & Modern
We have the advanced processing equipment, modernized physical and chemical testing center, opening flat, cutting, surface treatment, molding, sheet metal, welding. machining and 8 big processing platform.
Standardized
Export Packing
Waterproof paper, and steel strip packed. Seaworthy Package.Suit for all kinds of transport,or as required
Packing Standard export packing for stainless steel sheet.