316L Stainless Steel Round Bar | Unmatched Corrosion Resistance for Critical Applications

✓ Immune to Sensitization: Ultra-low carbon eliminates carbide precipitation, achieving AWS D1.6 Class W weld integrity without post-weld treatment.

✓ Chloride Dominance: PREN ≥32, validated by 5,000+ hours in ASTM G48 Method D seawater testing.

✓ Acid Warfare Ready: Resists 20% sulfuric acid at 30°C (86°F) and 10% hydrochloric acid at 25°C (77°F).

✓ Medical-Grade Precision: Ra ≤0.4μm polished finish complies with FDA CFR 21 and ISO 13485 for implantable devices.

316L Stainless Steel Round Bar (UNS S31603)

Engineered for extreme environments, 316L stainless steel round bar delivers superior resistance to pitting, crevice corrosion, and sensitization with ultra-low carbon content (≤0.03%) and enhanced molybdenum (2.5-3%). Certified to ASTM A276/A479 and NACE MR0175/ISO 15156-3, this stabilized austenitic alloy is the gold standard for chemical processing, marine engineering, and medical applications requiring unmatched durability in aggressive conditions.

Diameter Range: 3mm–250mm (hot-rolled ±0.5%; cold-drawn ±0.03mm)

Length: 1m–6m standard (cut-to-length precision ±0.5mm)

Surface Finishes: Hot Rolled, Cold Drawn, Polished (Ra ≤0.4μm), or Electropolished (Ra ≤0.2μm)

Mechanical Properties: Yield Strength ≥170 MPa | Tensile Strength ≥485 MPa | Elongation ≥50%

Parameter Category	Value/Description
Material Grade	UNS S31603 (per ASTM A276)
Composition (%)	C≤0.03, Cr 16.0-18.0, Ni 10.0-14.0, Mo 2.0-3.0, Mn≤2.0, Si≤1.0, P≤0.045, S≤0.03, N≤0.10
Tensile Strength (MPa)	≥485 (Annealed)
Yield Strength (MPa)	≥170 (Annealed)
Elongation (%)	≥40 (50mm gauge length)
Hardness	Brinell (HB): ≤217; Rockwell (HRB): ≤95 (Annealed)
Density (g/cm³)	8.03
Melting Range	1375-1400℃
Thermal Conductivity (W/m·K)	16.3 (20℃)
Thermal Expansion (10⁻⁶/℃)	16.0 (20-100℃)
Electrical Resistivity (Ω·m)	0.74×10⁻⁶ (20℃)
Elastic Modulus (GPa)	193
Magnetic Properties	Non-magnetic (Annealed)
Corrosion Resistance	Exceptional resistance to chlorides (seawater, salt spray), sulfuric acid, phosphoric acid, and organic acids; superior pitting/crevice corrosion resistance (PREN≥26)
Heat Treatment	Annealing: 1010-1150℃ followed by rapid cooling (water or air quenching)
Surface Finishes	Black (Hot-rolled), Turned, Polished, Pickling & Passivation
Dimension Range	Diameter: 5mm-300mm; Length: 3000mm/6000mm (standard)
Standards	ASTM A276/A479, EN 10088-3, JIS G4303, GB/T 1220
Applications	Chemical reactors, marine components, medical implants, seawater pipelines, pharmaceutical equipment, food processing systems

316L Stainless Steel Round Bar Applications

Industry	Critical Components	316L Round Bar Advantage
Chemical Processing	HCl storage tank shafts, acid scrubbers	0.005mm/year corrosion rate in 10% HCl at 40°C.
Marine & Offshore	Subsea valve stems, seawater pump shafts	ASTM A923-C certified for chloride stress corrosion cracking.
Pharmaceutical	Bioreactor agitators, sterile connectors	Passes USP Class VI biocompatibility testing.
Energy	Heat exchanger tubes, geothermal piping	-196°C cryogenic toughness per ASTM A370.

316L Stainless Steel Round Bar Product Packaging

316L Stainless Steel Round Bar are precision-engineered for superior corrosion resistance and mechanical strength, meeting ASTM A276 and ISO 3506 standards. To ensure optimal performance from factory to your facility, we implement rigorous packaging protocols and logistics safeguards.

Why Choose Us

Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。