316l Stainless Steel Bar

316L stainless steel bar is a premium low-carbon, molybdenum-enhanced austenitic alloy designed for extreme corrosion resistance in aggressive environments. Ideal for marine, chemical, and biomedical applications, it outperforms standard 304/316 grades with superior pitting resistance and weldability. Its unique composition ensures longevity in chloride-rich settings, making it indispensable for critical infrastructure and high-purity industries.

Global Standards & Certifications

Region	Standard	Designation
USA	ASTM A276/A479	UNS S31603
Europe	EN 1.4404	X2CrNiMo17-12-2
China	GB/T 1220	022Cr17Ni12Mo2
Japan	JIS SUS 316L	-
India	IS 6911	SS316L

Chemical Composition (Weight %)

Element	Content	Role
Carbon (C)	≤0.03%	Minimizes carbide precipitation during welding
Chromium (Cr)	16.0–18.0%	Forms passive oxide layer for corrosion resistance
Nickel (Ni)	10.0–14.0%	Stabilizes austenitic structure
Molybdenum (Mo)	2.0–3.0%	Enhances pitting/crevice corrosion resistance
Manganese (Mn)	≤2.0%	Improves hot workability
Silicon (Si)	≤0.75%	High-temperature durability
Iron (Fe)	Balance	Base metal

Mechanical & Physical Properties

Mechanical (ASTM A276)

Tensile Strength: 485–620 MPa

Yield Strength (0.2% Offset): ≥170 MPa

Elongation at Break: ≥40%

Hardness: ≤95 HRB (Annealed)

Modulus of Elasticity: 193 GPa

Physical

Density: 8.0 g/cm³

Melting Point: 1.370–1.400°C

Thermal Conductivity: 16.3 W/m·K (at 100°C)

Electrical Resistivity: 0.74 μΩ·m

Top 5 Industrial Advantages

Unmatched Corrosion Resistance:

Excels in chloride-heavy environments (seawater, chemical plants) and resists sulfuric/phosphoric acids.

Biocompatibility:

Meets ASTM F138/F139 standards for surgical implants and pharmaceutical equipment.

Weldability & Fabrication:

Low carbon content prevents sensitization; no post-weld heat treatment required.

Temperature Resilience:

Stable performance from -200°C (cryogenic) to 800°C (intermittent).

Sustainability:

100% recyclable with ≥50% recycled content; REACH and RoHS compliant.

Key Applications

Industry	Typical Uses
Marine	Boat shafts, propeller fittings, offshore rigs
Chemical Processing	Reactor vessels, heat exchangers, pipelines
Medical	Surgical tools, implants, MRI components
Oil & Gas	Subsea valves, pump components, LNG storage
Food Production	Brewery tanks, saltwater processing equipment

FAQs for Engineers & Procurement Teams

Q1: How does 316L differ from 316 stainless steel bars?

A: 316L has a lower carbon content (≤0.03% vs. 316's ≤0.08%), reducing carbide precipitation risk during welding. Ideal for welded assemblies in corrosive environments.

Q2: Is 316L suitable for coastal construction?

A: Yes, its molybdenum content provides exceptional resistance to saltwater-induced pitting and crevice corrosion.

Q3: Can 316L bars be heat-treated?

A: Austenitic grades like 316L cannot be hardened via heat treatment-cold working is used to enhance strength.

Why Partner With Us?

Certified Excellence: EN 10204 3.1/3.2 certifications, ISO 9001:2025 compliance.

Customization: Diameters 2mm–250mm, lengths up to 12m, and bespoke surface finishes (polished, pickled, or sandblasted).

Global Logistics: Guaranteed delivery within 18–30 days (FOB, CIF, DAP terms).

Technical Support: Free project consultation, including corrosion resistance modeling and CAD file optimization.

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