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304 Stainless Steel Rod 3mm 4mm 5mm Round Bar Annealed Condition for CNC Machining
Product Spotlights
Precision 304 stainless steel round bars in 3mm, 4mm, and 5mm diameters, annealed for superior CNC machinability. ISO9001 certified, tight h9 tolerance, excellent corrosion resistance, and customizable lengths. Backed by a US$50M+ exporter with global reach and mill test certificates.
Negotiable
MOQ: 1 Ton (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Shape:
Other, Round Bar
Standard:
Other, ASTM A276
material:
304 Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao Port
Delivery Detail:
7 days
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Shape
Other, Round Bar
Standard
Other, ASTM A276
material
304 Stainless Steel
diameter
3mm, 4mm, 5mm
condition
Annealed
surface
Bright / Pickled (optional)
length
Customizable (e.g., 3000mm, 6000mm)
application
CNC Machining, Auto Parts, Shafts
tolerance
h9 (typical for precision)
Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier of high-quality stainless steel products, exporting over US$50 million annually to markets worldwide. Our 304 Stainless Steel Rod 3mm 4mm 5mm Round Bar in annealed condition is specifically designed for precision CNC machining applications. With strict quality control and ISO9001 certification, we ensure consistent material properties, excellent machinability, and reliable performance for your manufacturing needs.
Key Features & Technical Specifications
- Premium Grade 304 Stainless Steel – Excellent corrosion resistance, good weldability, and high ductility after annealing.
- Annealed Condition – Softened structure reduces internal stress, improves machinability, and minimizes tool wear during CNC turning, milling, or drilling.
- Precision Diameters: 3mm, 4mm, 5mm – Tight tolerance (h9) ensures consistent dimensions for high-precision parts.
- Versatile Applications – Ideal for producing shafts, fasteners, connectors, medical devices, automotive components, and custom machined parts.
- Customizable Lengths – Available in standard 3m/6m bars or cut-to-length per your request.
- Clean Surface Finish – Supplied in bright or pickled surface (optional) to reduce pre-processing steps.
Physical & Mechanical Properties
| Property | Value |
|---|---|
| Density | 7.93 g/cm³ |
| Tensile Strength (Annealed) | ≥ 520 MPa |
| Yield Strength (0.2% offset) | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness (HRB) | ≤ 90 |
| Surface Roughness (Ra) | ≤ 1.6 µm (typical) |
Why Choose Our 304 Stainless Steel Rods for CNC Machining?
- Consistent Annealing Process – Our heat treatment ensures uniform softness, reducing chip breakage and improving surface finish.
- Batch Traceability – Each batch comes with mill test certificates (MTC) for chemical composition and mechanical properties.
- Long-Lasting Tool Life – The annealed condition minimizes work hardening, extending tool life by up to 30% compared to unannealed bars.
- Global Supply Chain – With 51–100 experienced employees and annual export value exceeding US$50 million, we deliver reliable quantities and stable lead times.
- Custom Packaging – Available in bundles, wooden cases, or anti-rust wrapped for sea/air freight.
Trusted by Customers Worldwide
Since our establishment in 2025, Hemaokang Steel has rapidly grown into a major exporter serving North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and domestic markets. Our ISO9001-certified quality management system guarantees that every 3mm, 4mm, and 5mm stainless steel rod meets strict international standards. Thousands of CNC workshops rely on our annealed bars for producing precision components with tight tolerances. We invite you to experience the difference of working with a dedicated steel supplier who prioritizes product consistency and customer satisfaction. Contact us today for a quote or free sample!
Frequently Asked Questions
-
Q: What is the difference between annealed and cold-drawn stainless steel rods?
A: Annealed rods are heat-treated to soften the material, making them easier to machine and reducing internal stress. Cold-drawn rods have higher strength but are harder to machine and may cause more tool wear. For CNC machining, annealed condition is preferred. -
Q: Do you offer other diameters besides 3mm, 4mm, and 5mm?
A: Yes, we can produce custom diameters from 1mm to 100mm. Please contact us with your specific requirements. -
Q: What is the tolerance for these rods?
A: Standard tolerance is h9 (e.g., for 5mm, range is ±0.025mm). Tighter tolerances (h6 or h7) are available upon request. -
Q: Can you provide a mill test certificate (MTC)?
A: Absolutely. We supply MTC with each shipment, including chemical composition, mechanical properties, and heat treatment details. -
Q: How are the rods packaged for export?
A: We use strong steel straps, waterproof wrapping, and wooden crates to protect against corrosion and damage during transit. Custom packaging options are available. -
Q: What is the minimum order quantity (MOQ)?
A: Standard MOQ is 500 kg per diameter, but we can accommodate smaller trial orders for new customers. -
Q: Do you offer free samples?
A: Yes, we provide free samples of up to 30 cm length for each diameter. You only pay for shipping. -
Q: How long does delivery take?
A: For standard sizes, delivery is typically 7–15 days after order confirmation. Larger quantities may require 20–30 days.
Send Inquiry to This Supplier
1Yr
Year Established
2025
Annual Export Value
US$50 Million - US$100 Million
Total Employees
51 - 100 People
Product Certifications
ISO9001
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