4 products
4 products
We specialize in the supply of 304 stainless steel bars, including round, square, flat, and hexagonal bars, with consistent quality and stable mechanical performance.
Based on application requirements, we support customized size, length, and surface finish, ensuring precise material matching for machining, fabrication, and structural use.
By Manufacturing Process:
Hot rolled 304 stainless steel bar, Cold drawn 304 stainless steel bar
By Bar Shape:
304 round bar, 304 square bar, 304 flat bar, 304 hexagonal bar
Specifications
| Item | Description |
|---|---|
| Product Form | Bar |
| Diameter / Size | Round: 3–300 mm |
| Flat Bar | Width 10–150 mm, Thickness 3–50 mm |
| Length | 3000–6000 mm or customized |
| Surface Finish | Black, Pickled, Bright, Polished |
| Manufacturing Process | Hot rolled / Cold drawn |
| Straightness | According to standard or customized |
304 Stainless Steel Bar
304 stainless steel bar is a widely used austenitic chromium-nickel stainless steel, known for its excellent corrosion resistance, good mechanical properties, and overall material stability.
With balanced strength, ductility, and weldability, 304 stainless steel bar is suitable for structural, machining, and corrosion-resistant applications across multiple industries.
It is often selected where long-term durability and material reliability are required in both indoor and outdoor environments.
Mechanical Properties (Typical)
| Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|
| ≥ 515 | ≥ 205 | ≥ 40 | ≤ 201 |
Chemical Composition (Typical)
| C (%) | Cr (%) | Ni (%) | Mn (%) | Si (%) | P (%) | S (%) |
|---|---|---|---|---|---|---|
| ≤ 0.08 | 18.0 – 20.0 | 8.0 – 10.5 | ≤ 2.00 | ≤ 1.00 | ≤ 0.045 | ≤ 0.03 |
Heat Treatment of 304 Stainless Steel Bar
1、Solution Annealing
Temperature range: 1010–1120°C
Process: Rapid cooling in water or air after heating
Purpose: Restores corrosion resistance and ductility after cold working or welding
2、Stress Relieving
Applied after heavy machining or forming
Helps reduce residual stress and minimize distortion
3、Hardening
304 stainless steel cannot be hardened by heat treatment
Strength improvement is achieved through cold working only
4、Performance Balance
Proper heat treatment prevents sensitization and ensures stable performance in welded, machined, and pressure-bearing applications.
Features of 304 Stainless Steel Bar
Corrosion Resistance: Excellent resistance to oxidation and many chemical environments, suitable for long-term service.
Mechanical Balance: Provides a reliable balance of strength and ductility for machining and forming.
Weldability: Suitable for most welding processes without preheating.
Non-magnetic Property: Generally non-magnetic in annealed condition; slight magnetism may appear after cold working.
Material Stability: Maintains consistent performance across a wide temperature range.
Applications of 304 Stainless Steel Bar
Structural Components: frames, supports, anchors; recommended diameter: 10–80 mm.
Machinery Parts: shafts, fasteners, pins, and fittings; recommended cold drawn bars.
Food & Chemical Equipment: mixing shafts, connectors, processing components.
Architectural Applications: handrails, decorative structures, load-bearing elements.
General Fabrication: cutting, welding, machining, and forming operations.
FAQ – 304 Stainless Steel Bar
1、Is 304 stainless steel bar suitable for outdoor use?
Yes, it performs well in most outdoor environments except highly chloride-rich conditions.
2、Can 304 stainless steel bar be welded?
Yes, it has excellent weldability and usually does not require post-weld heat treatment.
3、Is 304 stainless steel bar magnetic?
It is non-magnetic in annealed condition but may become slightly magnetic after cold working.
4、What is the difference between 304 and 316 stainless steel bar?
316 offers improved corrosion resistance due to molybdenum addition, while 304 provides a more economical solution for general applications.
We specialize in the supply of a full range of 304 stainless steel coils and support customized processing services, accurately matching application requirements based on material performance and fabrication needs.
By Manufacturing Process:
Cold rolled 304 stainless steel coil, Hot rolled 304 stainless steel coil
By Surface Treatment Type:
304 Mirror Stainless Steel Coil (8K), 304 Brushed Stainless Steel Coil (Long / Short Grain), 304 Embossed Stainless Steel Coil, 304 Sandblasted Stainless Steel Coil
Specifications
| Item | Specification |
|---|---|
| Product Type | 304 Stainless Steel Coil |
| Manufacturing Process | Cold Rolled (CR), Hot Rolled (HR) |
| Thickness Range | Typically from thin gauge to medium thickness |
| Width | Standard mill width or custom slitting |
| Inner Diameter | Standard coil ID (e.g. 508 mm / 610 mm) |
| Coil Weight | As per mill standard or customer requirement |
| Surface Finish | 2B, BA, No.4, Polished |
| Edge Condition | Mill edge, slit edge |
| Supply Condition | Annealed and pickled |
| Processing Service | Slitting, cutting-to-length, leveling |
304 Stainless Steel Coil
304 stainless steel coil is a widely used austenitic stainless steel product known for its excellent corrosion resistance, good formability, and stable mechanical performance. It is commonly supplied in cold rolled or hot rolled condition and is suitable for further processing such as slitting, cutting, stamping, and forming.
Chemical Composition (Typical)
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) |
|---|---|---|---|---|---|---|---|
| 304 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 18.0 – 20.0 | 8.0 – 10.5 |
Mechanical Properties (Typical)
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| 304 | ≥ 515 | ≥ 205 | ≥ 40 | ≤ 201 |
Heat Treatment of 304 Stainless Steel Coil
1. Annealing (Solution Treatment)
Temperature range: 1010–1120°C
Process: Rapid cooling in water or air after heating
Purpose: Restores maximum corrosion resistance and ductility after cold rolling
2. Stress Relieving
Applied after heavy cold working or forming
Helps minimize residual stresses and maintain dimensional stability
3. Hardening
304 stainless steel coil cannot be hardened by heat treatment
Strength improvement is achieved only through cold working
4. Performance Balance
Proper heat treatment prevents chromium carbide precipitation and maintains resistance to intergranular corrosion.
Ensures stable performance during forming, welding, and subsequent fabrication.
Features of 304 Stainless Steel Coil
Corrosion Resistance:
Excellent resistance to atmospheric corrosion and a wide range of chemical environments.
Formability:
High ductility allows easy rolling, bending, stamping, and deep drawing.
Surface Quality:
Uniform surface finish suitable for decorative and precision applications.
Weldability:
Compatible with common welding processes without complex pre-treatment.
Processing Flexibility:
Ideal base material for sheet cutting, strip slitting, and component fabrication.
Applications of 304 Stainless Steel Coil
Sheet and Plate Processing:
cut-to-length sheets, laser cutting blanks; recommended: cold rolled coils.
Appliance Manufacturing:
refrigerators, washing machines, kitchen equipment panels; recommended: BA or 2B finish.
Construction and Decoration:
cladding panels, ceilings, trims; recommended: thin gauge coils.
Food and Chemical Industry:
processing equipment, tanks, containers; recommended: annealed coils.
Automotive and Machinery Parts:
formed components requiring corrosion resistance and strength; recommended: medium thickness coils.
FAQ – 304 Stainless Steel Coil
Q1: What is the difference between stainless steel coil and sheet?
Stainless steel coil is supplied in continuous rolled form and can be further processed into sheets or strips, offering higher processing flexibility.
Q2: Is 304 stainless steel coil suitable for deep drawing?
Yes. Its austenitic structure provides excellent ductility, making it suitable for deep drawing and complex forming.
Q3: Can 304 stainless steel coil be welded directly?
Yes. Standard welding methods can be used without special heat treatment when proper procedures are followed.
Q4: Does 304 stainless steel coil rust easily?
No. It provides excellent corrosion resistance in normal atmospheric and mild chemical environments.
We supply a full range of 304 stainless steel pipes and tubes with reliable quality and flexible customization. Available in a wide range of sizes, thicknesses, finishes, and processing options to meet both industrial and architectural needs.
Our 304 stainless steel tubes come in various specifications to suit structural, mechanical, sanitary, and general fabrication requirements.
Available in wall thicknesses from 0.5 mm to 30 mm, and in common outer diameters such as 1/2″, 3/4″, 1″, or custom cut-to-size upon request.
By Manufacturing Process: Cold Drawn 304 Stainless Steel Seamless Pipe, Hot Rolled 304 Stainless Steel Seamless Pipe, ERW 304 Stainless Steel Pipe, Welded 304 Stainless Steel Tube
By Surface Treatment Type: 304 Pickled Stainless Steel Pipe, 304 Bright Annealed Stainless Steel Tube (BA), 304 Polished Stainless Steel Pipe, 304 Mirror Stainless Steel Tube, 304 Brushed Stainless Steel Tube
| Parameter | Description |
|---|---|
| Grade | 304 Stainless Steel (AISI / ASTM / EN / Equivalent Available) |
| Outer Diameter | 6 mm – 630 mm (custom sizes available) |
| Wall Thickness | 0.5 mm – 30 mm (custom cut-to-size available) |
| Length | Standard lengths 6 m, 12 m or custom |
| Standard | ASTM A312, ASTM A554, EN 10217, JIS, GB, etc. |
| Surface Finish | Pickled, BA, Polished, Mirror, Brushed |
| Processing Services | Cutting, bending, end finishing, welding, threading |
| Packaging | Export-grade waterproof wrapping + wooden pallet |
| MOQ | Flexible – supports small orders and bulk supply |
Chemical Composition of 304 Stainless Steel (wt%)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
Mechanical Properties of 304 Stainless Steel Pipe / Tube
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength (0.2%) | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 92 HRB |
| Density | ~7.93 g/cm³ |
| Melting Point | ~1400 – 1450 °C |
Heat Treatment of 304 Stainless Steel
304 stainless steel is an austenitic stainless steel and cannot be hardened by heat treatment. Heat treatment is mainly used to:
-
Solution Annealing: Heat to 1010 – 1120 °C, then rapidly cool (water quenching)
-
Stress Relief Annealing: Used to relieve work-hardening or welding stress
Features of 304 Stainless Steel Pipes / Tubes
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Excellent Corrosion Resistance — Performs well in most environments, including outdoors and mildly corrosive atmospheres.
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Superb Weldability — Compatible with TIG, MIG, arc welding, and other common methods.
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Good Formability & Fabrication — Easy to form, bend, and machine.
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Sanitary & Food-Grade Acceptability — Widely used where hygiene is required.
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Wide Range of Surface Finishes — Available in pickled, BA, polished, mirror, and brushed finishes.
Typical Applications
304 stainless steel pipe and tube are widely used in:
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Food processing and sanitary piping systems
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Chemical and petrochemical equipment
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Pharmaceutical manufacturing systems
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Architectural structural tubing and handrails
-
Heat exchangers and machinery frames
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Automotive and transportation components
304 Stainless Steel Pipe & Tube – FAQs
Q1: What is 304 stainless steel pipe?
304 stainless steel pipe is a corrosion-resistant tubular product commonly used for fluid conveyance, structural, and sanitary applications.
Q2: Is 304 stainless steel pipe food grade?
Yes, 304 stainless steel pipe is widely used in food and beverage processing due to its corrosion resistance and cleanability.
Q3: What is the difference between seamless and welded 304 stainless steel pipe?
Seamless tubes have no welded seam, offering higher pressure resistance; welded pipes are more cost-effective for less critical applications.
Q4: Can 304 stainless steel tube be welded?
Yes, 304 stainless steel tube has excellent weldability with common methods like TIG and MIG.
Q5: What sizes are available for 304 stainless steel pipe?
Available in diameters from 6 mm to 630 mm and thicknesses 0.5 mm – 30 mm, with custom sizes available upon request.
Q6: What surface finishes are offered for 304 stainless steel tubes?
Finishes include pickled, BA, polished, mirror, and brushed to meet industrial and decorative needs.
We specialize in the supply of a full range of 304 stainless steel plates and support customized relays, accurately matching your application needs based on core properties.
By Manufacturing Process: Cold rolled 304 stainless steel plate, Hot rolled 304 stainless steel plate
By Connection Type Surface treatment: 304 Mirror SS Sheet(8k),304 Brushed Stainless Steel Sheet(Long /Short Grain), 304 Embossed Stainless Steel Sheet,304 Sandblasted Stainless Steel Sheet
Standard Sizes of 304 Stainless Steel Sheet
| Item | Specification / Description |
| Material | 304 Stainless Steel |
| Standard | ASTM A240 / JIS G4305 |
| Thickness Range | 0.3 – 20 mm (Common: 0.3mm, 1mm, 2mm, 3mm, 5mm, 1/2 inch) |
| Width Range | 1000 – 2000 mm (Common: 1000, 1219, 1500) |
| Length Range | 2000 – 6000 mm (Customizable) Common sizes：4x8ft, 5x10ft |
| Surface Finish | 2B, BA, NO.4, NO.8, HL (Hairline), Mirror, Sandblasted, Etched, Embossed |
| Sheet Type |
Cold Rolled, Hot Rolled |
304 Stainless Steel Sheet
304 stainless steel is an austenitic stainless steel composed of 18–20% chromium (Cr) and 8–10.5% nickel (Ni), with small amounts of carbon (≤0.08%), manganese (≤2%), and silicon (≤1%). This composition provides excellent resistance to corrosion in air, fresh water, and many mild chemical solutions, as well as good tensile strength (520–750 MPa) and yield strength (205–310 MPa). It maintains ductility and formability across a wide temperature range.
Tip: Avoid prolonged exposure to chloride-rich environments (e.g., saltwater) to prevent localized corrosion.
304 Stainless Steel Sheet — Chemical Composition (%)
| C | Cr | Ni | Mn | Si | P | S | Fe |
| ≤0.08 | 18.0–20.0 | 8.0–10.5 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 | Balance |
304 Stainless Steel Sheet — Mechanical Properties
| Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) | Density (g/cm³) | Melting Point (°C) |
| 520–750 | ≥205 | ≥40 | ≤92 | 7.93 | 1400–1450 |
304 Stainless Steel Sheet — Surface Finish Options
| 2B | BA | No.4 | No.8 | HL (Hairline) | Sandblasted | Etched | Embossed |
| Smooth, matte, widely used | Bright annealed, mirror-like | Brushed, fine lines | Mirror polished, high reflectivity | Continuous hairline pattern | Rough matte finish | Patterned by chemical treatment | Raised decorative pattern |
Heat Treatment of 304 Stainless Steel
1. Annealing (Solution Treatment)
Temperature range: 1010–1120°C
Process: Rapid cooling in water or air after heating
Purpose: Restores maximum corrosion resistance and ductility
2. Stress Relieving
Applied after heavy machining or forming
Helps minimize residual stresses and distortion
3. Hardening
304 stainless steel cannot be hardened by heat treatment
Strength improvement is achieved only through cold working
4. Performance Balance
Proper heat treatment restores the chromium carbide balance, preventing sensitization and intergranular corrosion.
Ensures stable performance during welding, pressure vessel operation, and high-temperature service.
Features of 304 Stainless Steel Sheet
Corrosion Resistance: Excellent resistance to a wide range of atmospheric environments and many corrosive media, particularly effective against oxidation and mild chemical exposure.
Mechanical Properties: Provides a balance of high tensile strength and good ductility, allowing for reliable forming, bending, and deep drawing.
Weldability: Suitable for most welding techniques without requiring pre- or post-weld heat treatment, minimizing the risk of sensitization when properly handled.
Temperature Tolerance: Maintains structural stability up to ~870°C (1600°F) in intermittent service and ~925°C (1700°F) in continuous service.
Applications of 304 Stainless Steel Sheet
Kitchen Equipment : countertops, sinks, and work tables; recommended: 1/2 inch (12.7 mm) sheet.
Decorative Panels : wall cladding, ceiling panels, furniture surfaces; recommended: thin sheets, 0.5–1.0 mm.
Construction and Cladding : building facades, partitions, exterior panels; recommended: large sheets, 4x8 ft (1219x2438 mm) or 5x10 ft (1500x3000 mm).
Chemical and Food Industry : tanks, piping, processing equipment; recommended: 1–3 mm thickness.
Automotive and Machinery Parts : structural components requiring strength and corrosion resistance; recommended: 2–6 mm thickness.
304 Stainless Steel Sheet — FAQ
Q1: What is 304 stainless steel sheet made of?
A1: 304 stainless steel sheet is an austenitic stainless steel containing 18–20% chromium (Cr) and 8–10.5% nickel (Ni), with small amounts of carbon, manganese, and silicon. This composition ensures excellent corrosion resistance, ductility, and mechanical stability for 304 stainless steel sheets used in kitchen counters, decorative wall panels, and industrial 304 sheet applications.
Q2: What thicknesses are available for 304 stainless steel sheets?
A2: 304 stainless steel sheets are available in thicknesses ranging from 0.3 mm to 20 mm. Common long-tail options include 0.5 mm thin 304 stainless steel sheet for decorative panels, 1 mm 304 sheet for kitchen equipment, and 2–4 mm 304 stainless steel sheet for construction cladding and industrial use.
Q3: What sizes can I order for 304 stainless steel sheets?
A3: Standard widths range from 1000 mm to 1500 mm, and lengths from 2000 mm to 6000 mm. Popular long-tail sizes include 4x8 ft (1219x2438 mm) 304 stainless steel sheet for facades, 5x10 ft (1500x3000 mm) large 304 sheet for partitions, and custom large-size 304 stainless steel sheets for industrial applications.
Q4: What surface finishes are available for 304 stainless steel sheets?
A4: Available surface finishes include 2B smooth matte 304 sheet, BA bright annealed 304 stainless steel sheet, No.4 brushed finish, No.8 mirror finish, HL (hairline), sandblasted, etched, and embossed 304 sheets. These finishes are suitable for applications like kitchen counters, decorative panels, and industrial equipment.
Q5: Can 304 stainless steel sheets be cut, bent, or welded?
A5: Yes. 304 stainless steel sheets have excellent formability and can be cut, bent, deep drawn, or welded, including 1/2 inch 304 stainless steel sheet for kitchen counters and thin 304 sheets for decorative panels, without losing corrosion resistance. Cold working can further increase strength where needed.
Q6: How should 304 stainless steel sheets be maintained?
A6: Clean 304 stainless steel sheets regularly using mild detergent and water. Avoid prolonged exposure to chlorides or strong acids, especially for thin 304 stainless steel panels and kitchen equipment sheets, to maintain optimal corrosion resistance.
Q7: What are typical applications of 304 stainless steel sheets?
A7: Common applications include kitchen equipment (1/2 inch 304 sheet for countertops and sinks), decorative panels (thin 304 sheet for walls, ceilings, and furniture surfaces), construction and cladding (large 4x8 ft or 5x10 ft 304 sheet for facades and partitions), chemical and food processing industry (1–3 mm 304 sheet for tanks and piping), and machinery components (2–6 mm 304 stainless steel sheet for structural parts).
Q8: Can 304 stainless steel sheets be customized?
A8: Yes. Suppliers can provide custom thickness, width, length, and surface finish, such as thin 0.5–1 mm 304 sheet for decorative panels or large 4x8 ft 304 stainless steel sheet for construction cladding, to meet project or industrial requirements.