🟦 Product Overview
304L Stainless Steel Bar is the low‑carbon version of 304, designed to improve weldability and prevent carbide precipitation during welding.
Compared with 304:
- Lower carbon content (≤ 0.03%)
- Better weldability
- Better resistance to intergranular corrosion
- Same corrosion resistance in most environments
304L is widely used in:
- Chemical processing
- Food & beverage equipment
- Pressure vessels
- Welded structures
- Pharmaceutical equipment
- Marine components
It is the preferred grade when extensive welding is required.
🟦 Standards
- ASTM A276
- ASTM A479
- EN 10088
- JIS G4303 SUS304L
- GB/T 1220 022Cr19Ni10
🟦 Grade Included
- 304L Stainless Steel (Low‑Carbon Austenitic Stainless Steel)
🟦 Product Specifications & Available Sizes
Shapes Available
- Round Bar
- Square Bar
- Hex Bar
- Flat Bar
Diameter Range
Length
Surface Conditions
- Hot Rolled
- Cold Drawn
- Peeled / Turned
- Polished (180–600 grit)
🟦 Chemical Composition（304L）
| Element | Content (%) |
|---|
| C | ≤ 0.03 |
| Mn | ≤ 2.00 |
| Si | ≤ 1.00 |
| P | ≤ 0.045 |
| S | ≤ 0.030 |
| Cr | 18.0–20.0 |
| Ni | 8.0–12.0 |
📌 Low carbon (≤ 0.03%) is the key to its superior weldability.
🟦 Mechanical Properties（Typical）
| Property | Requirement |
|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 201 HB |
🟦 Physical Properties
| Property | Value |
|---|
| Density | 7.93 g/cm³ |
| Magnetic | Non‑magnetic (may become slightly magnetic after cold work) |
| Thermal Conductivity | 16 W/m·K |
| Corrosion Resistance | High |
🟦 Manufacturing Processes
- Hot Rolling
- Cold Drawing
- Turning / Peeling
- Grinding / Polishing
- Straightening
- Ultrasonic Testing
🟦 Primary Industry Usage
- Welded structures
- Chemical processing equipment
- Food & beverage machinery
- Pressure vessels
- Heat exchangers
- Marine hardware
- Pharmaceutical equipment
🟦 Why Use 304L Stainless Steel Bar
- Superior weldability
- No carbide precipitation during welding
- Excellent corrosion resistance
- Ideal for welded pressure vessels
- Same appearance and general performance as 304
🟦 Why Choose WelSteels
- Full size range of 304L stainless bars
- Hot rolled, cold drawn, and polished options
- MTC 3.1 + third‑party inspection
- Export‑grade packaging
- Competitive pricing for global buyers
