# Stainless Steel Metal Parts On Demand | 316L, 17-4 PH

> Get 316L parts fast or specify 17-4 PH custom parts on demand, with six stainless grades, browser CAD analysis, finish options, and a quality certificate.

Canonical: https://mesh2metal.com/materials/stainless-steel

__Specifications__
| Available grades   | 316L, 304L, 17-4 PH, duplex 2205-class, 410, 420 |
| ------------------ | ------------------------------------------------ |
| Quantity range     | 1–200 parts                                      |
| Machined tolerance | ±0.1 mm standard                                 |
| Part size          | 800 × 800 × 600 mm                               |

Stainless steel metal parts on demand cover six grades: 316L, 304L, 17-4 PH, duplex 2205-class, 410, and 420\. Drop STL, STEP/STP, 3MF, or OBJ; CAD is analyzed in your browser and never leaves your device. Parts are made in under 1 day, with delivery next day to 5 days depending on size.

## Which stainless steel grade fits the part?

Stainless steel grade selection starts with corrosion exposure, required strength, hardness, and the part’s mating surfaces. The six options below cover general corrosion resistance, chloride service, high strength, and wear-focused designs.

| Grade             | Corrosion resistance                        | Strength class              | Heat treatable | Typical use                                                         |
| ----------------- | ------------------------------------------- | --------------------------- | -------------- | ------------------------------------------------------------------- |
| 316L              | Very high; good chloride tolerance          | Austenitic / moderate       | No             | Marine hardware, fluid hardware, and corrosion-resistant enclosures |
| 304L              | High in general service; lower in chlorides | Austenitic / moderate       | No             | General brackets, enclosures, and lab hardware                      |
| 17-4 PH           | Moderate to high; condition dependent       | PH martensitic / high       | Yes            | Load-bearing brackets, shafts, and valve hardware                   |
| Duplex 2205-class | High; suited to chloride service            | Duplex / high               | No             | Chloride-bearing housings, pumps, and structural hardware           |
| 410               | Moderate; suited to controlled exposure     | Martensitic / moderate-high | Yes            | Shafts, fasteners, and wear parts                                   |
| 420               | Moderate; prioritizes hardness              | Martensitic / high hardness | Yes            | Cutting edges, wear surfaces, and tooling hardware                  |

## What are the 17-4 PH condition options?

17-4 PH custom parts should specify the material condition with the application, not only the alloy name. H900, H1025, and H1150 are typical aging conditions; the selected condition changes the balance of strength, hardness, toughness, and corrosion behavior.

| Condition | Typical balance                                                             | Choose when                                                      |
| --------- | --------------------------------------------------------------------------- | ---------------------------------------------------------------- |
| H900      | High strength and hardness, with lower toughness than the warmer conditions | Load-bearing parts prioritize strength and dimensional stability |
| H1025     | Balanced strength, toughness, and corrosion behavior                        | General structural hardware needs a middle condition             |
| H1150     | Lower strength with higher toughness and stress resistance                  | Toughness and service stability matter more than peak strength   |

Condition selection should include the expected load, exposure, temperature range, and inspection requirements. The quote should name the requested condition so the material choice stays traceable from CAD review through the quality certificate.

## When is duplex stainless steel the right choice?

Duplex 2205-class stainless steel is a strong option for chloride environments such as salt spray, brine, and chloride-bearing water. Duplex combines high strength with better chloride resistance than many general-purpose stainless options, which can help reduce section size or extend service margin where exposure is sustained.

Duplex is not a universal replacement for 316L. Compare the expected exposure, temperature, loads, and required finish before choosing. A [manufacturability review](https://mesh2metal.com/manufacturability) can flag geometry changes before you request an [instant quote](https://mesh2metal.com/quote).

## Why choose 410 or 420 for hardness and wear?

410 and 420 stainless steel are martensitic grades for parts where hardness and wear matter more than maximum corrosion resistance. 410 provides a useful balance of hardness, strength, and moderate corrosion resistance for shafts, fasteners, and general wear parts. 420 is commonly selected when a harder surface and better edge retention are priorities.

Hardness targets should match the contact load, sliding motion, impact risk, and exposure. If the part also needs strong chloride resistance, compare 410 or 420 with 316L or duplex before finalizing the grade.

## What design notes matter for stainless steel parts?

Stainless steel part design should identify load paths, sealing faces, mating bores, threaded features, and inspection datums before material selection. For parts built near-net shape, keep critical bores and datum faces accessible for precision machining. Add radii at internal corners, avoid razor-thin walls and deep narrow cavities, and state the required fit for each mating feature.

The instant manufacturability verdict arrives in under 60 seconds. If a design cannot be made, the result explains why and how to fix it. Review [how it works](https://mesh2metal.com/how-it-works) before finalizing a part with tight fits or difficult access.

## Which tolerances and finishes should I call out?

Stainless steel tolerance and finish notes should separate critical features from reference surfaces. Machined features are ±0.1 mm standard or ±0.05 mm precision. As-built surfaces are ±0.5 mm. Machined finish is Ra 3.2 µm standard or 1.6 µm optional; as-built finish is Ra 12–25 µm.

Choose as-built, machined, polished, or media-blasted surfaces by function. Call out sealing, sliding, cosmetic, and electrical-contact surfaces separately so the quote reflects the areas that need precision machining. See [quality options](https://mesh2metal.com/quality) for the inspection and documentation path.

## What does the stainless steel quality certificate include?

The stainless steel quality certificate accompanies every part. Inspection documentation includes chemical composition, porosity and defect map, 3D deviation from your CAD, mechanical properties, thermal properties, traceability, and certificate of conformance. Those records connect the selected grade and condition to the delivered part.

For regulated or safety-relevant hardware, define the required record set before requesting the quote. The [quality](https://mesh2metal.com/quality) page explains what is included, while [lead times](https://mesh2metal.com/lead-times) shows how delivery timing is handled.

## How do I order stainless steel metal parts on demand?

Stainless steel metal parts on demand start with a CAD file and a clear material requirement. Drop your STL, STEP/STP, 3MF, or OBJ file, select the grade, specify a 17-4 PH condition when applicable, and identify critical dimensions, finish, and certificate needs. The browser analyzes the CAD locally, returns a manufacturability verdict in under 60 seconds, and provides the exact date with the instant quote.

Parts are available in quantities from 1 to 200\. Use the [quote page](https://mesh2metal.com/quote) to check a design, or read the [lead-time guidance](https://mesh2metal.com/lead-times) when delivery timing drives the material decision.

##  Grades

 Confirmed per quote

__Grades and nominal density__
| Grade               | Density    |
| ------------------- | ---------- |
| 316L                | 7.99 g/cm³ |
| 304L                | 7.93 g/cm³ |
| 17-4 PH             | 7.78 g/cm³ |
| Duplex (2205-class) | 7.80 g/cm³ |
| 410 martensitic     | 7.74 g/cm³ |
| 420 martensitic     | 7.74 g/cm³ |

## Questions

Can I order only one stainless steel part?

Yes. Quantities range from 1 to 200 parts, so a single evaluation part and a small batch use the same starting path.

Which CAD file formats can I provide?

STL, STEP/STP, 3MF, and OBJ files are analyzed locally in your browser and never leave your device.

Does the quote include a delivery date?

The instant quote gives the exact date for the selected part. Delivery is next day to 5 days depending on part size.

Can I request export-controlled work?

Please don't send export-controlled (ITAR/EAR) technical data until we have set up a compliant path with you — contact us first.

Sources (4)

1. \[1\] [ Stainless steel ](https://en.wikipedia.org/wiki/Stainless%5Fsteel) , Wikipedia
2. \[2\] [ 316L ](https://en.wikipedia.org/wiki/SAE%5F316L%5Fstainless%5Fsteel) , Wikipedia
3. \[3\] [ Machining ](https://en.wikipedia.org/wiki/Machining) , Wikipedia
4. \[4\] [ Certificate of conformance ](https://en.wikipedia.org/wiki/Certificate%5Fof%5Fconformity) , Wikipedia

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