1 1/16 Stainless Steel Round Bar 316

Product Details: 316 Stainless Steel Round Bar

​Overview

The ​316 stainless steel round bar is a premium austenitic alloy engineered for superior corrosion resistance, especially in aggressive environments. Renowned for its addition of molybdenum (2–3%), this round bar excels in marine, chemical, and pharmaceutical applications where exposure to chlorides, acids, and extreme temperatures is common. This guide provides an in-depth look at its technical specifications, mechanical performance, and practical applications, optimized for clarity and search engine visibility.

​Technical Specifications

​In-Depth Performance Attributes

​1. Tensile Strength: Built for Demanding Environments

The ​316 stainless steel round bar delivers a ​minimum tensile strength of 515 MPa (75,000 psi) and a yield strength of 205 MPa (30,000 psi). Its enhanced molybdenum content provides exceptional resistance to:

• ​Pitting and Crevice Corrosion: Ideal for coastal infrastructure and offshore oil rigs.
• ​Sulfuric and Acetic Acids: Suitable for chemical processing equipment.
• ​High-Temperature Oxidation: Performs reliably up to 870°C (intermittent) and 925°C (continuous).

With 40–50% elongation at break, the alloy retains ductility for machining, welding, and forming into complex geometries like flanges and valve bodies.

​2. Bend Strength: Durability Under Stress

The ​316 stainless steel round bar boasts a ​minimum bend strength of 220 MPa (32,000 psi), enabling it to withstand dynamic loads in applications such as:

• ​Marine Shafts: Propeller shafts and rudder stocks exposed to seawater.
• ​Pharmaceutical Mixers: Agitators requiring fatigue resistance in sterile environments.
• ​Architectural Supports: Handrails and bridges in humid or salt-laden atmospheres.

Cold-drawn bars exhibit higher bend strength due to strain hardening, making them suitable for precision components.

​3. Identification and Certification: Guaranteeing Material Integrity

Authentic ​316 stainless steel round bars are verified through:

• ​Chemical Composition: 16–18% chromium (Cr), 10–14% nickel (Ni), 2–3% molybdenum (Mo), ≤0.03% carbon (C).
• ​Certification: Mill Test Reports (MTRs) confirming compliance with ASTM A276 or EN 1.4401.
• ​Non-Destructive Testing (NDT): Ultrasonic testing for internal defects and eddy current testing for surface cracks.

For welding applications, ​316L (low-carbon variant) is recommended to prevent carbide precipitation and ensure corrosion resistance.

​4. Weight Calculation: Simplifying Logistics

The weight of a ​316 stainless steel round bar is calculated using the formula:
\text{Weight (kg)} = \frac{{\text{Diameter (mm)}^2 \times \text{Length (m)} \times 0.0062}}
Example: A 50mm diameter bar measuring 3m weighs 502×3×0.0062=46.5kg.

For imperial measurements:
\text{Weight (lbs/ft)} = \frac{{\text{Diameter (in)}^2 \times 0.222}}
This predictability aids in cost estimation and shipping logistics.

​5. Why Does Stainless Steel Rust? Addressing Common Concerns

While ​316 stainless steel offers superior corrosion resistance, specific conditions can lead to oxidation:

• ​Chloride Exposure: High concentrations in seawater or industrial chemicals may cause pitting.
  • Solution: Use ​316L or ​super austenitic grades (904L) for extreme chloride environments.
• ​Galvanic Corrosion: Contact with carbon steel or aluminum in conductive fluids.
  • Solution: Use dielectric insulation or coatings to isolate dissimilar metals.
• ​Thermal Degradation: Prolonged exposure above 925°C reduces chromium’s protective oxide layer.
  • Solution: Opt for ​310S stainless steel for high-temperature applications.
• ​Mechanical Damage: Grinding or improper machining exposes the base material.
  • Solution: Passivate surfaces post-processing to restore corrosion resistance.

​Advanced Manufacturing Processes

​1. Hot Rolling

Billets heated to 1250°C are rolled into round profiles, refining the grain structure for enhanced toughness and uniformity.

​2. Cold Drawing

Bars are drawn through carbide dies to achieve precise tolerances (±0.05mm) and smooth surfaces, ideal for CNC machining.

​3. Solution Annealing

Heated to 1050–1100°C and water-quenched to dissolve intergranular carbides, ensuring optimal corrosion resistance.

​4. Surface Finishing

• ​Peeling: Removes surface imperfections for high-precision applications.
• ​Polishing: Achieves Ra ≤0.2µm for medical devices or food-grade equipment.
• ​Passivation: Nitric acid treatment enhances chromium oxide layer formation.

​Industry-Specific Applications

​Why Choose Our 316 Stainless Steel Round Bar?

(Positioned Strategically for Maximum Impact)

1. ​Unmatched Corrosion Resistance
   • Molybdenum-enriched ​316 stainless steel round bar outperforms 304 in chloride-rich environments.
2. ​Global Certifications
   • Compliant with ASTM, EN, ISO 9001:2015, and NACE MR-0175 for sour service applications.
3. ​Custom Solutions
   • Tailored diameters (5mm–300mm), lengths, and finishes (polished, sandblasted, peeled).
4. ​Competitive 316 Stainless Steel Round Bar Price
   • Bulk order discounts and price-match guarantees for distributors and OEMs.
5. ​Rapid Delivery
   • 10–15-day standard lead time with expedited shipping options.
6. ​Technical Expertise
   • Free consultation on material selection, welding techniques, and corrosion prevention.
7. ​Sustainability Commitment
   • Eco-friendly production using 80% recycled content and low-emission logistics.