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High-Quality 304F Stainless Steel Ground Bar for CNC and Tooling Applications
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xProduct Details
| Products Name | 304F Stainless Steel Bar | Diameter | 10 - 350mm |
|---|---|---|---|
| Length | 6m Or Cutting Any Length As Request | Surface | Pickling Or Bright |
| Service | Cutting | Standard | ASTM DIN GB EN |
| Other Products | Round Bar, Square Bar, Flat Bar.etc | Technique | Hot Rolled |
| Highlight | 304F stainless steel ground bar,CNC tooling stainless steel bar,stainless steel bar with warranty |
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Product Description
High-Quality 304F Stainless Steel Ground Bar for CNC and Tooling Applications
Products Specification
| Products Name | 304F Stainless Steel Round Bar |
| Grade |
303,304,304L,309S,310S,310H,316L,316Ti,316H,317L,321,329,347,410,415,420, 430F,431,440A/B/C,2205,2507,904l,254SMO,253MA,CD4MCU,XM-19,17-4PH,15-5PH,17-7PH,660,C276,600,601,625,718,800,800H,825,926.etc |
| Products Diameter Range | φ3mm - φ350mm |
| Length | 6m/pcs or cutting any length as request |
| Surface | Pickling finishing, bright finishing |
| Standard | ASTM JIS,GB,DIN EN |
| Service | Cutting |
| Other Shape | Square , Flat, Hexagonal, Round.etc |
| Loading Port | Shanghai Port |
| MOQ | 500 kgs |
High-Quality 304F Stainless Steel Ground Bar for CNC and Tooling Applications
Product Overview
The 304F Stainless Steel Ground Bar is engineered for high-precision applications where surface finish, corrosion resistance, and excellent machinability are essential. As a sulfur-enhanced version of 304 stainless steel, 304F is designed to provide superior machinability while maintaining the excellent corrosion resistance and durability of standard 304 stainless steel.
These ground bars are ideal for CNC machining, tooling, and precision engineering. The smooth, ground surface minimizes friction during processing, enhances part accuracy, and reduces the need for post-machining finishing operations. Industries including automotive, aerospace, medical, food processing, and chemical manufacturing commonly utilize 304F ground bars for high-performance applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | 304F Stainless Steel (Alloy 304F) |
| Diameter Range | 3mm – 120mm (custom diameters available) |
| Length | Up to 6 meters (custom lengths on request) |
| Finish | Precision Ground |
| Density | 7.93 g/cm³ |
| Tensile Strength | ≥505 MPa |
| Yield Strength | ≥210 MPa |
| Elongation | ≥40% |
| Hardness (Brinell) | 201 HB |
| Thermal Conductivity | 16.2 W/m·K |
| Electrical Resistivity | 0.73 x 10⁻⁶ Ω·m |
| Surface Roughness (Ra) | ≤1.0 µm |
| Machinability | Excellent (Sulfur-enhanced) |
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.20 – 0.35 |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Iron (Fe) | Balance |
The sulfur content enhances machinability while retaining corrosion resistance, making 304F ideal for CNC machining and tooling applications.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥505 MPa |
| Yield Strength | ≥210 MPa |
| Elongation | ≥40% |
| Brinell Hardness (HB) | 201 |
| Modulus of Elasticity | 193 GPa |
These mechanical properties ensure durability, reliability, and consistent performance under various operational conditions.
Standards and Certifications
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ASTM A276 – Stainless Steel Bars and Shapes
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ASTM A479 – Stainless Steel Bars for Pressure Vessels
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UNS S30420 – Unified Numbering System for 304F
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ISO 9001:2015 – Quality management compliance
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ISO 14001:2015 – Environmental management compliance
Key Features
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High Machinability – Sulfur-enhanced 304F enables faster CNC machining and reduced tool wear.
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Corrosion Resistance – Retains 304 stainless steel's excellent corrosion resistance for indoor and outdoor applications.
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Precision Ground Finish – Smooth surface reduces post-machining finishing, ensuring high part accuracy.
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Non-Magnetic in Annealed Condition – Ideal for electronics and sensitive equipment applications.
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Durable and Reliable – High tensile strength and elongation ensure long-term performance.
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Versatile Applications – Suitable for automotive, aerospace, medical, food, and chemical industries.
Comparable Stainless Steel Grades
| Grade | Machinability | Corrosion Resistance | Notes |
|---|---|---|---|
| 304 | Moderate | Excellent | Standard 304, lower machinability than 304F |
| 303 | Excellent | Moderate | High machinability, less corrosion resistance |
| 316F | Good | Excellent (Marine) | Machinable version of 316, for harsh environments |
| 430 | Fair | Moderate | Ferritic, magnetic, lower corrosion resistance |
Applications
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Automotive: Shafts, fasteners, pins, and connectors for vehicles
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Aerospace: Precision bushings, pins, and small structural components
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Medical & Healthcare: Surgical instruments, implants, connectors
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Food Processing: Machinery parts, conveyor components, pumps, and valves
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Tooling & Machinery: Gears, dies, spindles, and precision tooling
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Chemical Industry: Pipes, fittings, and vessels exposed to mild chemicals
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Electronics: Non-magnetic parts and housings
FAQ
Q1: How is 304F different from standard 304 stainless steel?
A1: 304F contains additional sulfur, which enhances machinability, allowing faster machining and longer tool life while maintaining corrosion resistance.
Q2: Can 304F ground bars be welded?
A2: Yes, they can be welded. Use compatible filler metals and consider post-weld annealing to minimize stress and maintain corrosion resistance.
Q3: What surface finish is provided on the bars?
A3: The bars are precision ground with a typical surface roughness Ra ≤1.0 µm, suitable for CNC and tooling applications.
Q4: Are 304F bars suitable for food and medical applications?
A4: Yes, 304F stainless steel is biocompatible, corrosion-resistant, and easy to clean, making it suitable for food and medical equipment.
Q5: Can 304F be heat-treated to increase hardness?
A5: No, as an austenitic stainless steel, 304F cannot be hardened by heat treatment but can be annealed to relieve stress or soften for forming.
Conclusion
The 304F Stainless Steel Ground Bar provides a unique combination of high machinability, corrosion resistance, and precision ground finish, making it ideal for CNC machining and tooling applications. Its sulfur-enhanced composition reduces tool wear, improves manufacturing efficiency, and ensures consistent performance. Suitable across industries including automotive, aerospace, medical, food processing, and chemical manufacturing, 304F ground bars offer precision, durability, and reliability for high-performance engineering and manufacturing needs.
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