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Product Overview
The 316 stainless steel hex bar is a premium austenitic alloy engineered for extreme durability and corrosion resistance. As a specialized variant of the stainless steel hex bar, it incorporates molybdenum (2-3%) to enhance performance in aggressive environments such as marine, chemical, and industrial applications. Its hexagonal cross-section provides superior mechanical grip and alignment for fasteners, valves, shafts, and custom machinery components, combining functionality with aesthetic versatility.
Property | Details |
---|---|
Material Grade | 316/316L (UNS S31600/S31603) |
Standard Sizes | Stainless steel hex bar sizes: 1/4″–4″ across flats, 12″–144″ length |
Hardness | 150–200 HB (Annealed), 300–350 HB (Cold Worked) |
Surface Finish | Mill Finish, Polished, Bright Annealed, Sandblasted |
Tolerance | ±0.001″ (Precision Ground) |
Density | 8.0 g/cm³ |
Melting Point | 1375–1400°C (2500–2550°F) |
Processing Methods | Hot Forged, Cold Drawn, CNC Machined, Centerless Ground |
The 316 stainless steel hex bar delivers a tensile strength of 580 MPa (84 ksi), ensuring exceptional resistance to deformation under heavy loads. This property is critical for high-stress applications such as marine propeller shafts, chemical reactor components, and industrial fasteners. The molybdenum content enhances resistance to pitting and crevice corrosion, even in chloride-rich environments like offshore platforms or coastal installations. The hexagonal geometry distributes stress evenly across the bar, reducing localized wear and extending service life.
With a bend strength of 290 MPa (42 ksi), this alloy maintains structural integrity during fabrication processes like bending, machining, or welding. The hexagonal shape’s six-sided symmetry allows for precise alignment in tooling and machinery, minimizing material waste. This makes the stainless steel hex bar ideal for applications requiring tight tolerances, such as hydraulic fittings, valve stems, and custom automotive parts.
Each 316 stainless steel hex bar is laser-etched with permanent identifiers, including the grade (e.g., “316” or “316L”), batch number, and manufacturer certification codes. This ensures full traceability and compliance with international standards such as ASTM A276 and ASME SB829. The non-invasive marking process preserves the material’s corrosion resistance and surface integrity.
Calculate the weight of a stainless steel hex bar using the formula:
Weight (kg/m) = 0.0068 × (Across Flats in mm)² × Length (m)
Example: A 25mm (1″) hex bar weighs 4.25 kg/m, while a 50mm (2″) bar weighs 17 kg/m. This formula aids engineers in estimating material costs, shipping logistics, and structural load capacities. For imperial measurements, use:
Weight (lb/ft) = 0.2833 × (Across Flats in inches)²
Although the 316 stainless steel hex bar is highly corrosion-resistant, localized rust may occur under extreme conditions:
Prevention Strategies:
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