Injection Molding
Tooling and molding for your repeat plastic parts.
316 · UNS S31600 · EN 1.4401
316 Stainless Steel for Your Fluid-Handling & Custom Parts
Start with the medium, sealing features and final surface your part must meet.
For your 316 stainless steel machining project, connect exposure, geometry and inspection before choosing the finished manufacturing route.
3 Service Inputs Before You Choose Your Grade
1 · Actual medium
Identify fluids, chlorides, temperature and cleaning chemicals, including conditions during shutdown.
2 · Contact & geometry
Show crevices, seals, dissimilar metals and surfaces where moisture can remain.
3 · Final condition
Connect joining, surface treatment, cleanliness and acceptance to the assembled component.
For 316 stainless steel marine parts, describe the actual exposure and design. The grade name alone does not certify seawater suitability, pressure performance or service life.
Find 316 & 316L Across US and European Drawings
Stainless steel 316 belongs to the austenitic chromium-nickel-molybdenum family. Search names such as SS 316 and 316 stainless help locate the material; keep the full specification in your purchase requirement.
| Reference name | Your drawing check |
|---|---|
| 316 · UNS S31600 | EN 1.4401 is a common European correspondence. |
| 316L · UNS S31603 | EN 1.4404 identifies a common low-carbon variant. |
| Other 316-family EN numbers | 1.4436, 1.4432 and 1.4435 have different supplier chemistry references; do not infer interchangeability. |
| 316 stainless steel ASTM A240 | Review the applicable flat-product specification, revision, thickness and condition. It is not a standard for every stock form. |
Confirm any dual certification on the material record. Search-name correspondence is not substitution approval.
Your Sealing Shoulder, Thread and Bore Belong Together
For 316 stainless steel turning services, relate shoulder position, concentric features and the final mating condition to one inspection plan.
For 316 stainless steel spacers and 316 stainless steel threaded parts, specify the functional length, thread standard, engagement and burr requirement.
316 stainless steel turning should be reviewed with material condition, workholding and surface acceptance. A general material label does not define the achievable result.
CNC Turning →
316 Stainless Steel Composition: Compare the Same Reference
316 / 4401: Selected Typical Alloy Content
Outokumpu Supra reference · mass % · axis 0–20%
Chromium · Cr
17.2%
Nickel · Ni
10.1%
Molybdenum · Mo
2.1%
| Supra reference | C % | Cr % | Ni % | Mo % |
|---|---|---|---|---|
| 316 / 4401 | 0.04 | 17.2 | 10.1 | 2.1 |
| 316L / 4404 | 0.02 | 17.2 | 10.1 | 2.1 |
The cited supplier typical carbon value differs between these references. Lower carbon is relevant to welding-related selection; it is not a universal performance upgrade.
Read 316 stainless steel properties with the standard, product form and delivery condition. Request the relevant material record for your actual lot.
316 Stainless Steel CNC Machining: Review Access Before Cutting
316 stainless steel machinability depends on the stock condition, tooling, coolant, workholding and actual feature. Identify the surface that controls assembly.
For 316 stainless steel milling, flag deep intersections, sealing faces and thin walls. Connect 316 stainless steel drilling and 316 stainless steel tapping to chip access, useful depth and final cleaning.
For your 316 stainless steel machined parts, retain the datum and inspection state after secondary operations.
CNC Milling → · CNC Machining →
Agree the Joining Route Before Final Acceptance
For 316 stainless steel welding, review joint access, procedure requirements, distortion, weld cleaning and the final measurement condition. Confirm whether 316L is specified.
For 316 stainless steel fabricated parts, identify which interfaces must be machined after joining. Keep weld inspection and any application approval explicit.
Welding & Fabrication →
Keep Your Formed Parts in the Same Finished Scope
For 316 stainless steel sheet metal fabrication, define stock thickness, grain, bend relationships and visible faces. For custom 316 stainless steel sheet metal parts, connect the flat pattern to the finished assembly.
Cut & form
Review 316 stainless steel laser cutting and 316 stainless steel bending with hole-to-bend relationships and the final mounting condition.
Mount & protect
For 316 stainless steel brackets and 316 stainless steel enclosures, identify hardware, joining, cosmetic faces and handling protection.
Define the Surface That Your Application Needs
For 316 stainless steel passivation, agree cleaning, treatment compatibility and verification requirements for the actual component.
For 316 stainless steel electropolishing, discuss the required surface, geometry, masking and evidence before confirming the route. A polished appearance alone does not establish corrosion performance.
For 316 stainless steel laser marking, identify the position, content and any restrictions on sealing, functional or exposed faces.
Surface Finishing Review → · Laser Marking →
4 Drawing Checks for Your 316 Component
01 · Seal & thread access
Connect the seal land, thread and cross passage
Define functional thread depth, mating seals and inspection access. Identify intersecting passages and burr removal.
Specify seal geometry, useful thread engagement and inspection access together. The cutaway makes hidden interfaces visible.
1.4401 / 1.4404316 / 316L European correspondence
Keep the exact product standard and condition; names alone do not approve substitution.
Read the source and conditions →
02 · Crevice & drainage
Show where your fluid can remain or drain
Show retained-liquid zones and dissimilar contact. Review the actual exposure with your material selection.
Identify low points, crevices, cleaning access and the actual medium and temperature. Review the complete assembled geometry.
2.1%Molybdenum · supplier typical mass %
Outokumpu Supra 316/4401 and 316L/4404 selected typical chemistry. This is not a universal marine or chloride-resistance guarantee.
Read the source and conditions →
03 · Weld & final size
Release the grade and weld route together
Agree joining, cleaning and final machining sequence before dimensional acceptance.
Plan weld access, final machining and cleaning. Record whether the application requires the low-carbon variant.
0.04% / 0.02%316 / 316L typical carbon · mass %
Supplier typical values, not specification limits or a test of your lot. They do not qualify an unspecified weld procedure.
Read the source and conditions →
04 · Surface protection
Keep sealing surfaces separate from cosmetic faces
Mark functional and cosmetic faces, treatment exclusions and packing controls.
Identify the required surface, protected lands, marking restrictions and receiving evidence. A bright appearance is not a corrosion test.
17.2%Chromium · supplier typical mass %
Selected Supra reference chemistry; full composition, environment and condition must be reviewed together.
Read the source and conditions →Connect Your Material Record to the Finished Valve or Fitting
Identity
Full grade, product standard, form and condition.
Interfaces
Sealing faces, datums, bores and functional threads.
Surface record
Cleaning, finish, treatment and agreed inspection.
Release
Revision, lot traceability, exceptions and packing.
Compare the Requirement Before Changing Material
| Your decision | Selection review |
|---|---|
| 316 vs 316L stainless steel | Confirm the required carbon grade, joining route, standard and actual material records. |
| 316 vs 304 | Review medium, temperature, cleaning, crevices and cost against the same finished drawing. |
| 316 vs 303 | Review exposure and joining requirements as well as the machining route. |
| Higher strength or another family | Compare the exact grade and condition; do not infer suitability from a higher strength number alone. |
304 / 304L Stainless Steel → · 303 Stainless Steel → · Grade Selection Guide →
5 Inputs Behind Your 316 Finished-Part Quote
For your 316 stainless steel machining quote, compare the same finished scope. When evaluating a 316 stainless steel CNC parts manufacturer, connect the route and acceptance to your drawing.
Stock
Grade, form, condition and record scope.
Geometry
Sealing faces, passages, threads and access.
Joining
Fabrication, welds and final machining.
Surface
Cleaning, treatment, marks and protection.
Release
Quantity, inspection and packing.
For 316 stainless steel prototype machining, state what the sample must prove and how production material and conditions will be represented.
Your Questions Before Ordering 316 Parts
Does 316 stainless steel rust?
It can corrode under unsuitable exposure or contamination. Review the medium, temperature, crevices, cleaning and surface condition rather than relying on the grade name alone.
Is 316 stainless steel magnetic?
Do not use a magnet alone to accept the grade. Processing and condition can affect magnetic response; retain the agreed material identification records.
Can 316 stainless steel be welded?
Review the actual joint, procedure, distortion, cleaning and inspection requirements. Confirm whether a low-carbon grade is required.
Can 316 stainless steel be passivated?
Discuss cleaning, treatment compatibility and verification for the actual component. The finished surface and service conditions remain selection inputs.
What is 316 stainless steel used for?
It may be reviewed for valve bodies, fittings, spacers, fabricated mounts and other components where the specified material suits the application. This is not application certification.
How much does 316 stainless steel machining cost?
Share your drawing, grade, stock form, quantities, finish and evidence requirements. Compare the same finished-part scope rather than raw material price alone.
Does EN 1.4404 automatically replace EN 1.4401?
No. These names identify commonly used 316L and 316 references. Your full specification, form, condition and substitution permission govern the order.
Does 316L eliminate the need for weld cleaning?
No. Low-carbon material selection does not replace the joining, cleaning, surface and acceptance requirements for your component.
6 Inputs for Your Custom 316 Stainless Steel Parts
For 316 stainless steel machining services, send the drawing and the exposure that controls material selection. Keep machining, fabrication and surface acceptance connected.
Drawing
Revision and CAD when available.
Material
Exact grade, standard, form and condition.
Environment
Medium, temperature and cleaning.
Features
Seals, threads, joints and fits.
Quantity
Prototype, repeat and release pattern.
Evidence
Finish, material records and inspection.
