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Manufacturing services
CNC turning and milling · From 1 part
Precision machined 316L stainless steel parts: plugs, fittings, flanges, bushings and parts for welding, sanitary equipment and marine service, turned and milled from your file. Upload your CAD and order online, starting at a single part.
Pipe plug
316L Stainless · ⅛" NPT thread · ½" hex head · 20 mm long
1 pc
$46.90 USD
per part
25 pcs
$7.80 USD
per part
-83.37%100 pcs
$6.45 USD
per part
-86.25%316L stainless steel (AISI 316L, UNS S31603) is an austenitic stainless with 2–3% molybdenum and low carbon: 0.03% max. Molybdenum makes it resist chlorides, and the low carbon prevents corrosion in the weld zone. That is why it is used for parts that will be welded, for sanitary, pharmaceutical and food equipment, and for marine service. At PREMSA we CNC turn and mill it from your file, starting at a single part with an instant price.
Engineering-grade properties of 316L stainless steel, including mechanical, physical and machining characteristics relevant to precision machined components. This data supports material selection for turned, milled and threaded parts that work in water, chlorides or chemicals.
Alloy Type
Low-Carbon Molybdenum-Bearing Austenitic Stainless Steel
Primary Characteristics
Excellent corrosion resistance, excellent weldability, improved resistance to sensitization after welding, good formability
Tensile Strength (Ultimate)
70 ksi (485 MPa) minimum
Tensile Strength (Yield)
25 ksi (170 MPa) minimum
Elongation at Break
40% minimum
Hardness
Rockwell B 95 max / Brinell 217 HB max
Density
8.00 g/cm³ (0.289 lb/in³)
Elastic Modulus
28,000 ksi (193 GPa)
Poisson’s Ratio
0.30
Thermal Conductivity
16.3 W/m·K
Coefficient of Thermal Expansion
15.9–16.0 µm/m·°C
Specific Heat
500 J/kg·K
Melting Range
1370–1400 °C (2500–2550 °F)
Machinability
Moderate (work hardens: sharp tooling, steady feed and coolant)
Formability
Good to excellent (suitable for bending, forming, and many fabricated shapes)
Weldability
Excellent (low carbon prevents sensitization at the weld)
Corrosion Resistance
Excellent (in chloride, chemical and marine environments)
Common Forms
Round bar, hex bar, flat bar, plate, tube
Typical Applications
Welded parts, plugs and fittings, flanges, bushings, shafts, sanitary, pharmaceutical and food equipment parts, marine hardware
Material Composition
Iron (Fe): balance, Chromium (Cr): 16–18%, Nickel (Ni): 10–14%, Molybdenum (Mo): 2–3%, Carbon (C): ≤0.03%, Manganese (Mn): ≤2.0%, Silicon (Si): ≤1.0%, Phosphorus (P): ≤0.045%, Sulfur (S): ≤0.03%
ASTM Standard
ASTM A240 / A276 / A312
Standardized comparison across key engineering and manufacturing criteria.
Strength
Weight
Machinability
Formability
Weldability
Corrosion Resistance
Thermal Resistance
Cost Efficiency
Upload your CAD file and get an instant price and delivery date. CNC turning and milling from one part to production.
We CNC turn and mill 316L stainless parts for sanitary, pharmaceutical, food and marine equipment and for welded assemblies.
Plugs, couplings and threaded (NPT) fittings
Weld-on flanges and end caps
Bushings, spacers and sleeves
Shafts, pins and axles
Pump and valve parts
Sanitary and pharmaceutical equipment parts
Food and beverage equipment parts
Marine hardware and parts
Parts welded into assemblies
Common questions about custom 316L stainless steel parts: what it is, welding, composition, magnetism, machinability, cost and tolerances.
316L stainless steel resists chlorides —seawater, salt, chlorine and cleaning chemicals— and, with its low carbon, keeps that resistance in the weld zone. It comes in round bar, hex bar, flat bar and plate.
At PREMSA Industries we machine 316L with CNC turning and milling from your file, from prototype to production.
316L is chosen when a part has to resist chlorides or chemicals and will also be welded or go into sanitary equipment.
If your drawing doesn’t specify tolerances, we machine to ISO 2768-m (medium). On dimensions you call out we can hold ±0.025 mm (±0.001 in), and critical dimensions are checked in inspection.
Much bar stock is sold dual-certified 316/316L, meeting both specifications at once, so a part machined from it meets a drawing that calls for 316L.
316L machines by CNC turning, CNC milling, drilling and tapping, but it work hardens as it is cut.
316L welds well, and its low carbon prevents corrosion in the weld zone.
316L is used in CNC machined components that are welded or go into sanitary equipment.
316L is usually the right choice when the part has to resist chlorides or chemicals and will also be welded.