416 Stainless Steel Round Bar Diameter 10 - 250mm Hot Rolled SS Bars in 6m Length

416 Stainless Steel Round Bar – Diameter 10–250mm, Hot Rolled, 6m Length

Overview

416 stainless steel round bars are a martensitic grade of stainless steel known for their excellent machinability, moderate corrosion resistance, and high strength after heat treatment. These hot-rolled bars are widely used in industries such as automotive, aerospace, machinery, valves, pump shafts, and fasteners where precision machining and mechanical performance are critical.

Our 416 Stainless Steel Round Bars are manufactured to international standards (including ASTM A276, AISI, DIN, JIS, and GB) and available in diameters ranging from 10 mm to 250 mm, with standard lengths of 6 meters. Custom lengths and surface finishes can also be provided upon request.

Key Features & Benefits

• Superior Machinability: Among the most machinable stainless steels due to added sulfur.
• High Strength: Achieves high hardness and tensile strength after heat treatment.
• Good Wear Resistance: Ideal for components subjected to friction and wear.
• Magnetic Properties: Suitable for applications requiring magnetic response.
• Cost-Effective: Offers an optimal balance between performance and price for non-corrosive or mildly corrosive environments.

Typical Applications

Chemical Composition (ASTM A276 Standard)

Note: The elevated sulfur content significantly enhances machinability but slightly reduces corrosion resistance compared to 410 or 420 grades.

Mechanical Properties (As-Hot-Rolled Condition)

After heat treatment (quenching and tempering), tensile strength can exceed 1000 MPa with hardness up to 35 HRC.

Product Specifications

Why Choose 416 Over Other Stainless Grades?

Tip: Use 416 when you need fast, clean machining and can tolerate limited exposure to corrosive environments (e.g., dry or mildly humid indoor settings).

Heat Treatment Guidelines

To maximize mechanical properties, 416 stainless steel bars can be heat-treated as follows:

1. Annealing:

   • Heat to 815–900°C, hold, then furnace cool to 600°C, followed by air cooling.
   • Resulting hardness: ~180–220 HB.

2. Hardening:

   • Heat to 925–1010°C, hold, then oil or air quench.
   • Achieves hardness up to 40 HRC.

3. Tempering:

   • Reheat to 150–700°C (depending on desired strength/toughness balance), then air cool.
   • Avoid tempering between 425–595°C to prevent embrittlement.

Always consult engineering guidelines before final heat treatment.

Packaging & Delivery

• Packaging: Bundled with steel straps, wrapped in waterproof paper, and marked with heat number, grade, dimensions, and standards.
• Protection: Ends capped to prevent damage during transit.
• Shipping: FOB Qingdao/Shanghai/Tianjin, China. Global shipping via sea or air.
• Documentation: Includes Mill Test Report (MTR), Packing List, Commercial Invoice, and Certificate of Origin.

Frequently Asked Questions (FAQ)

Q1: Is 416 stainless steel suitable for marine environments?
A: No. Due to its lower chromium content and sulfur addition, 416 has poor resistance to saltwater corrosion. Use 316 or duplex grades instead.

Q2: Can I weld 416 stainless steel?
A: Welding is not recommended without preheating and post-weld annealing, as it may cause cracking. If welding is unavoidable, use matching filler (e.g., AWS E/ER410) and follow strict procedures.

Q3: What surface finishes are available?
A: Standard = black hot-rolled finish. Optional: pickled (cleaned), centerless ground (for precision shafts), or polished (BA/No.4).

Q4: Do you provide cut-to-length service?
A: Yes. We offer saw cutting, band sawing, or CNC cutting to your exact length (e.g., 1m, 3m, or custom).

Q5: Are samples available?
A: Yes. Free samples (up to 30 cm) are available for qualified buyers; shipping cost applies.

Technical Support & Custom Solutions

We support OEM/ODM requests, including:

• Custom diameters (e.g., 17.5 mm, 88.9 mm)
• Non-standard lengths (2m to 12m)
• Special tolerances (h9, h11, etc.)
• Logo engraving or batch marking
• Third-party inspection (SGS, BV, TÜV)

Our engineering team can assist with material selection, processing advice, and application-specific recommendations.

Competitive Advantages

✅ In-House Production: Direct mill pricing with no middlemen
✅ Quality Assurance: Every batch tested for chemistry and mechanical properties
✅ Fast Turnaround: 7-day dispatch for common sizes
✅ Global Compliance: Meets ASTM, EN, JIS, and GB standards
✅ Eco-Friendly: Recyclable material with full traceability

Ordering Information

To request a quote, please provide:

• Required diameter (e.g., 50 mm)
• Length (standard 6m or custom)
• Quantity (in tons or pieces)
• Surface finish preference
• Destination port

Conclusion

The 416 Stainless Steel Round Bar (10–250mm, Hot Rolled, 6m) delivers unmatched machinability and mechanical strength for industrial components that don’t require extreme corrosion resistance. Backed by rigorous quality control and flexible customization options, it’s the go-to choice for manufacturers seeking efficiency, reliability, and value.

Whether you’re producing precision shafts, valve stems, or fasteners, our 416 SS bars ensure smooth machining, dimensional accuracy, and consistent performance—batch after batch.

Contact us today for a competitive quote, technical datasheet, or sample!