304 Stainless Steel Coil
AISI 304 (UNS S30400) is the most widely used austenitic stainless steel coil with 18% Cr and 8% Ni, offering excellent corrosion resistance, formability, and weldability. Thickness 0.3-14mm, width 600-1524mm, multiple surface finishes (2B/BA/No.4/HL/No.8). Mill test certificate provided.
| Material | Austenitic Stainless Steel |
|---|---|
| Grade / Standard | AISI 304 / UNS S30400 |
| Thickness | 0.3mm - 14mm |
| Width | 600mm - 1524mm |
| Inner Diameter (ID) | 508mm / 610mm |
| Coil Weight | 3-8 Tons (Max 10 Tons) |
| Delivery Condition | hot_rolled / cold_rolled |
| Surface Treatment | bare / polished |
| MOQ | 5 Tons |
| Delivery Time | 10-20 Days / In Stock |
| Loading Port | Tianjin / Shanghai / Qingdao |
Overview of 304 Stainless Steel Coil
AISI 304 is the most widely used austenitic stainless steel grade in the world, accounting for over 50% of global stainless steel coil production. Specified under ASTM A240 / EN 10088-2 standards with UNS designation S30400, 304 stainless steel coil offers an excellent combination of corrosion resistance, formability, weldability, and aesthetic appeal at a moderate cost. Containing nominally 18% chromium and 8% nickel, the grade provides the characteristic non-magnetic austenitic microstructure with exceptional cold formability for deep drawing, roll forming, stamping, and complex fabrication operations.
304 stainless steel coil is the preferred raw material for high-volume manufacturing of stainless steel products requiring continuous production lines and consistent material properties. Available in both hot rolled (HR) and cold rolled (CR) conditions with multiple surface finishes, the coil is widely used by stainless steel processing centers, slitting service providers, tube manufacturers, deep drawing fabricators, and OEM manufacturers worldwide. The grade resists corrosion in atmospheric environments, fresh water, food and beverage processing chemicals, organic acids at moderate temperatures, and many industrial chemicals, making it indispensable for kitchenware, appliances, food equipment, and architectural manufacturing.
Key Features and Coil Manufacturing
304 stainless steel coil is manufactured through hot rolling for thicker gauges (typically 3mm to 14mm) or cold rolling for thinner gauges (0.3mm to 6mm), followed by solution annealing at 1010-1120°C with rapid cooling to dissolve carbides and achieve optimal corrosion resistance. Cold rolled coils undergo additional pickling and skin pass rolling to achieve precise thickness tolerance and excellent surface quality. The coil is supplied in standard widths from 600mm to 1524mm with thickness ranging from 0.3mm to 14mm, with custom slitting and recoiling services available.
Multiple surface finishes are available including 2B (cold rolled, annealed, pickled, light cold rolled — most common for general use), BA (bright annealed, mirror-like reflective surface), No.4 (brushed satin finish for architectural and appliance applications), HL (hairline finish for decorative use), and No.8 (mirror polish for high-end applications). Standard inner diameter is 508mm or 610mm, with coil weight typically ranging from 3 to 8 tons depending on thickness and width. Each coil undergoes mandatory chemical composition analysis (PMI verification available), mechanical property testing, intergranular corrosion testing per ASTM A262, and surface quality inspection to ensure full compliance with international standards.
Main Applications of 304 Stainless Steel Coil
304 stainless steel coil is the primary raw material for high-volume manufacturing of stainless steel products across multiple industries. Kitchen appliance manufacturers use 304 coil for refrigerator bodies, dishwasher panels, microwave oven exteriors, range hoods, kitchen sinks, cookware (pots, pans, woks), and small appliance housings where excellent corrosion resistance, easy cleaning, and aesthetic appeal are essential. The food processing equipment industry employs 304 coil for processing line components, conveyor system parts, food storage tank shells, beverage container manufacturing, and commercial kitchen equipment.
The stainless steel pipe and tube industry uses 304 coil as feedstock for ERW (electric resistance welded) and seamless tube production through tube mill processing lines, supplying tubing for water systems, food processing piping, decorative handrails, and industrial applications. Architectural and construction applications include elevator interior panels, escalator components, decorative cladding, signage, public restroom fixtures, and exterior building decorations. Other major applications include automotive exhaust components, household sink production, dental and medical equipment fabrication, industrial enclosures, electronic equipment housings, transportation equipment, and a comprehensive range of consumer goods requiring continuous coil-fed manufacturing processes for cost-efficient mass production.
Why Choose Us for 304 Stainless Steel Coil
Shandong Tanglu Metal Material Co., Ltd. supplies premium 304 stainless steel coil sourced from major Chinese stainless steel mills including Tisco (Taiyuan Iron & Steel), Baosteel Stainless, and Lisco with proven international export experience and certified production facilities meeting ISO 9001, ISO 14001, ASME, and PED requirements. Every 304 coil undergoes mandatory chemical composition analysis (PMI verification available), mechanical property testing including tensile, yield, elongation, and hardness verification, intergranular corrosion testing per ASTM A262 Practice A or E, surface finish quality inspection, and dimensional inspection per ASTM A240 / EN 10088-2 latest revision.
We offer comprehensive specification range covering thickness from 0.3mm to 14mm and width from 600mm to 1524mm in multiple surface finishes (2B, BA, No.4, HL, No.8) with flexible coil weight options from 3 to 8 tons to match different processing line requirements. With monthly supply capacity of 8,000 tons of stainless steel coils and established export relationships with stainless steel processing centers, tube mills, and OEM manufacturers in over 50 countries, we support both small trial orders and large bulk container shipments. Each shipment includes original mill test certificate (MTC) conforming to EN 10204 3.1 standard, with EN 10204 3.2, PMI report, and third-party inspection (SGS, BV, ABS, DNV, LR) available for critical applications requiring enhanced documentation.
📐 Dimension & Size Table
| Thickness (mm) | Width (mm) | Inner Dia (mm) | Coil Weight (T) |
|---|---|---|---|
| 0.3 | 600-1250 | 508 | 3-5 |
| 0.4 | 600-1250 | 508 | 3-5 |
| 0.5 | 600-1500 | 508 | 3-6 |
| 0.6 | 600-1500 | 508 | 3-6 |
| 0.8 | 600-1500 | 508 | 3-6 |
| 1.0 | 600-1500 | 508 / 610 | 3-7 |
| 1.2 | 600-1500 | 508 / 610 | 3-7 |
| 1.5 | 600-1500 | 508 / 610 | 5-8 |
| 2.0 | 600-1500 | 508 / 610 | 5-8 |
| 2.5 | 1000-1524 | 610 | 5-8 |
| 3.0 | 1000-1524 | 610 | 5-8 |
| 4.0 | 1000-1524 | 610 | 5-10 |
| 5.0 | 1000-1524 | 610 | 5-10 |
| 6.0 | 1000-1524 | 610 | 5-10 |
| 8.0 | 1000-1500 | 610 | 5-10 |
| 10.0 | 1000-1500 | 610 | 5-10 |
| 12.0 | 1000-1500 | 610 | 5-10 |
| 14.0 | 1000-1500 | 610 | 5-10 |
* Custom sizes available upon request. Tolerances per relevant international standards.
🔬 Chemical Composition
| Element | Min | Max | Display Value | Note |
|---|---|---|---|---|
| C | - | 0.08 | ≤0.08 | Per ASTM A240 304 |
| Si | - | 0.75 | ≤0.75 | |
| Mn | - | 2.00 | ≤2.00 | |
| P | - | 0.045 | ≤0.045 | |
| S | - | 0.030 | ≤0.030 | |
| Cr | 18.00 | 20.00 | 18.00-20.00 | Corrosion resistance element |
| Ni | 8.00 | 10.50 | 8.00-10.50 | Austenite stabilizer |
| N | - | 0.10 | ≤0.10 | Optional |
| Fe | - | - | Balance | Base element |
* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.
⚙️ Mechanical Properties
| Property | Value | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength (Rm) | ≥515 | MPa | Solution annealed, per ASTM A240 |
| Yield Strength (Rp0.2) | ≥205 | MPa | 0.2% proof stress |
| Elongation (A) | ≥40 | % | Gauge length 50mm |
| Brinell Hardness (HBW) | ≤201 | HBW | Solution annealed |
| Rockwell Hardness (HRB) | ≤92 | HRB | Solution annealed |
| Vickers Hardness (HV) | ≤210 | HV | Solution annealed |
| Impact Energy (KV2) | ≥150 | J | Charpy V-notch at +20°C |
| Density | 7.93 | g/cm³ | Reference value |
| Magnetic Permeability | ≤1.02 | μ | Non-magnetic austenitic structure |
* Values shown are minimum requirements unless otherwise stated.
📦 Commercial Information
| Packaging | Standard seaworthy export packing for stainless steel coils. Each coil wrapped with PE film for surface protection, then bundled with steel strapping (4-6 wraps per coil), with eye protection rings on inner diameter and weather-resistant outer wrap. Coils labeled with heat number, grade designation (304 / S30400), thickness, width, coil weight, and surface finish. Standard loading: coil eye horizontal or coil eye vertical based on container requirement. Custom packaging including wooden cradles and vacuum-sealed wrapping for premium polished surfaces (BA / No.8) available to prevent surface damage during transit. |
|---|---|
| Payment Terms | T/T (Telegraphic Transfer),L/C (Letter of Credit),D/P (Documents against Payment),Western Union,PayPal |
| Price Term | FOB,CFR,CIF,EXW |
| Supply Capacity | 8,000 Tons/Month (Stainless Steel Coils) |
| Loading Port | Tianjin / Shanghai / Qingdao |
Why Choose Our 304 Stainless Steel Coil?
Mill Certified Premium Quality
304 stainless steel coil supplied with original mill test certificate EN 10204 3.1/3.2, including chemical analysis (PMI verification available), mechanical properties, intergranular corrosion test per ASTM A262, surface finish inspection, and complete heat number traceability per ASTM A240 standard.
Comprehensive Specification Range
Thickness from 0.3mm precision foils to 14mm heavy gauge, width from 600mm to 1524mm. Coil weight 3-8 tons with custom slitting and recoiling services. Inner diameter 508mm or 610mm to match standard processing line requirements.
Multiple Surface Finish Options
Five standard surface finishes available: 2B (most common for general use), BA (bright annealed mirror surface), No.4 (brushed satin for appliances), HL (hairline for decorative), and No.8 (mirror polish for premium applications). Custom embossed and patterned finishes available.
FDA & Multi-Industry Compliance
FDA compliant for food contact applications, with ISO 9001, CE / PED, ABS, DNV GL, Lloyd's Register, BV, SGS, NK, and RINA certifications. Suitable for kitchenware, food processing, appliance manufacturing, and OEM production line supply.
Fast Container Loading Worldwide
Common specifications maintained in large stock for 7-15 days dispatch. Container loading optimized for 25-27 tons per 20FT FCL or 27 tons per 40FT FCL. Established export logistics to stainless steel processing centers and OEM manufacturers in over 50 countries.
🏭 Applications of 304 Stainless Steel Coil
304 stainless steel coil is the primary raw material for high-volume manufacturing of stainless steel products across multiple industries. Kitchen appliance manufacturers use 304 coil for refrigerator bodies, dishwasher panels, microwave oven exteriors, range hoods, kitchen sinks, cookware production lines, and small appliance housings where excellent corrosion resistance, easy cleaning, and aesthetic appeal are essential. The food processing equipment industry employs 304 coil for processing line components, conveyor system parts, food storage tank shells, beverage container manufacturing, commercial kitchen equipment, and meat processing equipment requiring FDA compliance and CIP/SIP cleanability. The stainless steel pipe and tube industry uses 304 coil as primary feedstock for ERW (electric resistance welded) and seamless tube production through tube mill processing lines, supplying tubing for water systems, food processing piping, decorative handrails, automotive exhaust manifolds, and industrial applications. Architectural and construction applications include elevator interior panels, escalator side panels, decorative cladding, signage backing, public restroom fixtures, hotel kitchen equipment, and exterior building decorations. Other major applications include automotive exhaust components, household kitchen sink production lines, dental and medical equipment fabrication, industrial enclosures, electronic equipment housings, vending machine bodies, transportation equipment manufacturing, solar thermal equipment, and a comprehensive range of consumer goods requiring continuous coil-fed manufacturing processes for cost-efficient mass production with consistent material quality.
📋 Quality & Certification
Our Certifications
- ✅ ISO 9001:2015
- ✅ CE Marking
- ✅ ABS
- ✅ DNV GL
- ✅ Lloyd's Register (LR)
- ✅ Bureau Veritas (BV)
- ✅ SGS Certified
- ✅ NK
- ✅ RINA
Mill Certificate Type
- 📋 EN 10204 3.1
- 📋 EN 10204 3.2
- 📋 Original Mill Certificate
- 📋 Third Party Inspection Available
- 📋 Certificate of Origin
❓ Frequently Asked Questions
What is 304 stainless steel coil?
304 is the most widely used austenitic stainless steel grade specified under ASTM A240 / EN 10088-2 standards with UNS designation S30400. The coil contains nominally 18% chromium and 8% nickel, providing the characteristic non-magnetic austenitic microstructure with excellent corrosion resistance, formability, and weldability at moderate cost. 304 stainless steel coil is supplied in both hot rolled (HR, typically 3-14mm) and cold rolled (CR, typically 0.3-6mm) conditions with multiple surface finishes (2B, BA, No.4, HL, No.8), serving as primary feedstock for stainless steel processing centers, tube mills, appliance manufacturers, and OEM production lines worldwide.
What is the difference between hot rolled and cold rolled 304 coil?
Hot rolled (HR) 304 coil is produced at elevated temperatures (typically 1050-1150°C), available in thickness from 3mm to 14mm with No.1 surface finish (rough oxide scale removed by pickling). It has wider dimensional tolerance and is more economical, suitable for industrial applications, structural components, and fabrication where surface finish is not critical. Cold rolled (CR) 304 coil is produced at room temperature with multiple rolling passes, available in thickness from 0.3mm to 6mm with smooth precision surface finishes (2B, BA, No.4, HL, No.8). Cold rolled coil offers tighter dimensional tolerance (typically ±0.05mm), superior surface quality, and enhanced mechanical properties through cold work strengthening, making it preferred for appliance manufacturing, decorative applications, food equipment, and consumer goods requiring high-quality surface appearance.
What surface finishes are available for 304 stainless steel coil?
304 stainless steel coil is available in multiple surface finishes to suit different application requirements. 2B finish is the most common cold rolled finish (cold rolled, annealed, pickled, and lightly cold rolled to achieve smooth reflective surface) used for general industrial and food processing applications. BA finish (bright annealed in protective atmosphere) provides mirror-like reflective surface ideal for decorative panels and food contact equipment. No.4 finish (brushed satin with linear graining) is popular for restaurant equipment, appliance panels, and architectural applications. HL finish (hairline brushed) offers fine continuous polishing lines for decorative use. No.8 finish (mirror polish) provides high-gloss reflective surface for premium applications, elevator panels, and luxury fixtures. Custom embossed patterns, anti-fingerprint coating, and PVC protective film available upon request.
What is the typical coil weight and inner diameter for 304 coils?
Standard 304 stainless steel coil weight ranges from 3 to 8 tons depending on thickness and width specifications, with maximum coil weight up to 10 tons available for selected sizes. Standard inner diameter (ID) is 508mm (20 inches) or 610mm (24 inches) to match common processing line equipment including slitting lines, cut-to-length lines, tube mills, and roll forming machines worldwide. Custom coil weight from 1 to 8 tons is available to match specific customer processing line capacity, with smaller coil weights preferred for prototype production runs or limited storage capacity facilities. Coil eye orientation (horizontal or vertical) for container loading is selected based on container type and quantity to optimize payload efficiency and handling safety.
What is the typical container loading for 304 stainless steel coils?
Standard container loading for 304 stainless steel coils: 20FT FCL container typically loads 22-27 tons of coils depending on coil weight and dimensions, while 40FT FCL container loads 24-27 tons (limited by container weight capacity, not volume). Loading capacity varies based on coil weight: larger coils (5-8 tons each) load 4-5 coils per 20FT FCL, while smaller coils (3-4 tons each) load 6-8 coils per 20FT FCL. All coils are properly braced with wooden cradles, steel chocks, and securing straps to prevent shifting during ocean transit. For coils with premium surface finishes (BA, No.8), additional protective measures including PVC film coating, vacuum-sealed wrapping, and individual cardboard separators are used to prevent surface scratching during loading and transportation.
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304 Stainless Steel Coil
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