ASTM A276 316/316L Stainless Steel Hex Bar 7mm × 60-Inch Cold Drawn Precision Bright Bar Manufacturer & Supplier
Standard:ASTM A276
Size:7 mm
Length:60 in (1524 mm)
Surface Finish:Bright, Cold Drawn, Peeled, Ground, Polished
Product Introduction
316 stainless steel hexagonal bars are hexagonal prism-shaped metal materials made from 316 stainless steel as the base material. Their specifications range from H2 to H90, and they are suitable for temperatures ranging from -196°C to 800°C. Its chemical composition includes C ≤ 0.08%, Si ≤ 1.00%, Mn ≤ 2.00%, P ≤ 0.035%, and S ≤ 0.03%, along with 10.0–14.0% nickel, 16.0–18.5% chromium, and 2.0–3.0% molybdenum. This material offers corrosion resistance, heat resistance, and low-temperature strength; its resistance to pitting corrosion in marine environments and the chemical industry is superior to that of 304 stainless steel, and it retains good resistance to intergranular corrosion even after welding.
This product can be formed through hot working processes such as stamping and bending, making it suitable for manufacturing stainless steel bolts, nuts, and industrial components. Application areas include automotive parts, solar equipment, household appliances, precision electronics, architectural decoration, chemical processing equipment, and food processing machinery. Surface treatment processes include drawing and BA (bright annealed) finishing, and custom samples and rough machining services are available. Due to its outstanding oxidation resistance, Grade 303 is commonly used in coastal construction and acidic or alkaline environments.
Stainless Steel Hexagonal Bar specifications
| Parameter | Specification |
|---|---|
| Product Name | ASTM A276 316/316L Stainless Steel Hex Bar |
| Material Grade | 316 / 316L Stainless Steel |
| Standard | ASTM A276, ASTM A484, ASTM A582 (Optional) |
| Shape | Hexagonal Bar (Hex Bar) |
| Hex Size | 7 mm |
| Length | 60 in (1524 mm) |
| Length Tolerance | ±2 in (±50.8 mm) or Custom |
| Manufacturing Process | Hot Rolled + Cold Drawn |
| Surface Finish | Bright, Cold Drawn, Peeled, Ground, Polished |
| Surface Condition | Smooth, Bright, Burr-Free |
| Dimensional Tolerance | ASTM A484 or Customer Requirements |
| Straightness | ASTM A484 Standard |
| Edge Condition | Sharp Edge or Chamfered Edge Available |
| Heat Treatment | Solution Annealed |
| Hardness | ≤95 HRB (Typical) |
| Density | 8.00 g/cm³ |
| Melting Range | 1375–1400°C (2507–2552°F) |
| Magnetic Property | Non-magnetic in the annealed condition (slightly magnetic after cold working) |
| Corrosion Resistance | Excellent resistance to pitting, crevice corrosion, and chloride environments |
| Machinability | Good |
| Weldability | Excellent |
| Available Lengths | 3 m, 6 m, 60 in, or Cut-to-Length |
| Available Sizes | 5 mm–100 mm Hex (Custom Sizes Available) |
| Certification | EN 10204 3.1 MTC, ISO 9001 |
| Inspection | Chemical Composition, Mechanical Properties, PMI, Dimensional Inspection, Surface Inspection |
| Packaging | Waterproof Paper + Wooden Case + Steel Strapping or Export Seaworthy Package |
| Origin | China |
Chemical Composition Of ASTM A276 316 Hex Bar
The chemical composition of 316 stainless steel hexagonal bars includes carbon (C) ≤ 0.08%, silicon (Si) ≤ 1.00%, manganese (Mn) ≤ 2.00%, phosphorus (P) ≤ 0.035%, and sulfur (S) ≤ 0.03%, and contains 10.0–14.0% nickel (Ni), 16.0–18.5% chromium (Cr), and 2.0–3.0% molybdenum (Mo)
| Element | 316 Stainless Steel | 316L Stainless Steel |
|---|---|---|
| Carbon (C) | ≤0.08 | ≤0.03 |
| Silicon (Si) | ≤1.00 | ≤1.00 |
| Manganese (Mn) | ≤2.00 | ≤2.00 |
| Phosphorus (P) | ≤0.035 | ≤0.035 |
| Sulfur (S) | ≤0.030 | ≤0.030 |
| Chromium (Cr) | 16.0–18.5 | 16.0–18.5 |
| Nickel (Ni) | 10.0–14.0 | 10.0–14.0 |
| Molybdenum (Mo) | 2.00–3.00 | 2.00–3.00 |
| Nitrogen (N) | ≤0.10 | ≤0.10 |
| Iron (Fe) | Balance | Balance |
Performance Features Of 7mm Stainless Steel Hex Bar
316/316L stainless steel hexagonal bars offer corrosion resistance, heat resistance, and low-temperature strength, along with excellent mechanical properties. In marine environments and the chemical industry, their resistance to pitting corrosion is superior to that of 304 stainless steel, and they retain good resistance to intergranular corrosion even after welding. In addition, they exhibit good hot workability-such as stamping and bending-and do not undergo heat treatment hardening.
Manufacturing Process
316/316L stainless steel hexagonal bars have good hot-working properties and can be formed through hot-working processes such as stamping and bending, without exhibiting heat treatment hardening during processing.
Unlike martensitic stainless steels, 316/316L does not undergo heat-treatment hardening during fabrication. Its mechanical properties are achieved primarily through cold working rather than heat treatment, making it easier to machine, weld, and fabricate while maintaining stable dimensional accuracy.
The low-carbon composition of 316L further reduces the risk of carbide precipitation during welding, providing superior resistance to intergranular corrosion without the need for post-weld heat treatment in most applications. This makes 316/316L hex bars an ideal choice for manufacturing fasteners, valves, shafts, marine hardware, food processing equipment, pharmaceutical machinery, chemical processing components, and precision machined parts.
After hot working, solution annealing is recommended when maximum corrosion resistance and optimal mechanical properties are required. Combined with precision cold drawing and bright finishing, ASTM A276 316/316L stainless steel hex bars deliver excellent surface quality, tight dimensional tolerances, and long-term reliability in demanding industrial environments.
Our Advantages Of 316/316L Stainless Steel Hex Bar
✔ ASTM A276 Standard Compliance
✔ Premium 316/316L Stainless Steel Materials
✔ Precision Cold Drawn & Bright Finish
✔ Tight Tolerances & Excellent Straightness
✔ OEM & ODM Custom Manufacturing
✔ EN 10204 3.1 MTC Available
✔ Third-Party Inspection Support
✔ Competitive Factory Price
✔ Fast Delivery Worldwide
✔ Professional 316/316L Stainless Steel Hex Bar Manufacturer
Applications Of Cold Drawn Stainless Steel Hex Bar
01automotive parts
02solar equipment
03home appliances
04precision electronics
05architectural decoration
06chemical equipment
07food processing machinery
Frequently Asked Questions
1. Do you have ASTM A276 316/316L stainless steel hex bars in stock?
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Yes. We maintain regular stock of 316 and 316L stainless steel hex bars in various sizes. Standard lengths include 3 m, 6 m, and 60 inches, while custom cut lengths are available for OEM orders.
2. Can you manufacture custom hex sizes and lengths?
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Yes. We offer custom manufacturing services for hex size, length, tolerance, surface finish, and packaging. Simply send us your drawings or specifications, and our engineering team will provide a customized solution.
3. What is your minimum order quantity (MOQ)?
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Our MOQ depends on the product specification. Standard stock sizes usually have a low MOQ, while custom-made products are quoted based on size, quantity, and processing requirements.
4. Can you provide EN 10204 3.1 Material Test Certificates?
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Yes. Every shipment can be supplied with an EN 10204 3.1 Material Test Certificate (MTC) showing chemical composition, mechanical properties, and inspection results. Third-party inspections such as SGS, BV, and TÜV are also available upon request.
5. What surface finishes do you offer?
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We supply Bright Cold Drawn, Peeled, Ground, Polished, and Black finishes. Custom surface finishes can also be produced according to customer requirements.
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