Specify with confidence.
Technical data tables
Chemical composition reference — weight %
Alleima rows are nominal compositions, with limits where marked. ATI rows are flat-product chemistry limits, not pipe limits. “—” means no value is provided here; it does not mean zero.
| Reference material | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 / 304L — Alleima 3R12 | ≤0.030 | 0.5 | 1.3 | ≤0.030 | ≤0.015 | 18.5 | 10 | — | — | — |
| 316 / 316L — Alleima 3R65 | ≤0.030 | 0.4 | 1.7 | ≤0.040 | ≤0.015 | 17 | 11.5 | 2.1 | — | — |
Mechanical property reference
Values apply to the cited mill product and test basis. They are not certificates or universal acceptance values for Tokk Steel material.
| Reference material | Test °C | Rp0.2 / yield (MPa) | Tensile (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|---|
| 304 / 304L — Alleima 3R12 | 20 | ≥210 | 515–680 | ≥45 | ≤90 HRB |
| 316 / 316L — Alleima 3R65 | 20 | ≥220 | 515–690 | ≥45 | ≤90 HRB |
304 / 304L — Alleima 3R12: Nominal mill chemistry and published seamless tube/pipe properties. Elongation A uses L₀ = 5.65√S₀. For wall above 10 mm the source notes proof strength may be about 10 MPa lower. View source datasheet ↗
316 / 316L — Alleima 3R65: Nominal mill chemistry and published seamless tube/pipe properties. Elongation A uses L₀ = 5.65√S₀. The source states proof strength can be about 10 MPa lower for wall above 10 mm. View source datasheet ↗
Calculated section examples
Illustrative dimensions, not a standard size or stock list. Mass assumes sharp corners, uniform wall and density 8.00 g/cm³. Real corner radii and tolerances change section area and weight.
| Width (mm) | Height (mm) | Wall (mm) | Inner width (mm) | Inner height (mm) | Approx. kg/m |
|---|---|---|---|---|---|
| 30 | 20 | 1 | 28 | 18 | 0.768 |
| 40 | 20 | 1.5 | 37 | 17 | 1.368 |
| 50 | 25 | 2 | 46 | 21 | 2.272 |
| 60 | 40 | 3 | 54 | 34 | 4.512 |
Tables are sourced reference data or explicitly calculated examples. Your order’s grade, product standard and material documentation determine acceptance. Request current pricing with your quantity and specification; no competitor prices or pressure ratings have been transferred.
Rectangular tubes: width, height and wall
Rectangular stainless steel tubing is one of the section shapes addressed by ASTM A554’s mechanical-tubing scope. The outside width and height remain separate dimensions, and the wall thickness must be identified independently.
| Reference item | Technical guidance |
|---|---|
| Product form | Rectangular mechanical tubing |
| Standard reference | ASTM A554, if specified |
| Dimensions | Outside width × height, wall and length |
| Drawing details | Corners, orientation and acceptance tolerances |
How to use this information
Include corner geometry, orientation and tolerances on the drawing. Confirm load-bearing suitability through the applicable design specification rather than assuming it from the mechanical-tubing label.
Reference information explains the material or specification. Confirm actual dimensions, grade compliance, certificates and availability with the quotation. Manufacturer-specific approvals and properties apply to that manufacturer’s product.
Technical references: ASTM A554 — welded mechanical tubing
Send the details below so our team can review your requirement. Sizes, supply conditions and documentation will be confirmed with your quotation.
| Material | Stainless steel |
| Grade | Specified grade |
| Manufacturing type | Specify seamless or welded where applicable |
| Dimensions | Provide outside diameter, wall thickness and length |
| Standard & tolerance | Provide the applicable project specification |
| Finish | Specify your required surface finish |
| Quantity & documentation | Specify quantity and any certificate or inspection requirements |
Keep rectangular width and height distinct
Specify outside width and height separately so the section orientation is clear. Add wall thickness, corner geometry, length and tolerances. For fabrication, include finish and any joining or mounting requirements that influence dimensional acceptance. A drawing is useful where the rectangular tube forms part of a closely fitted assembly.
Comparing supplier quotations
When comparing quotations, check both side dimensions and the wall. Sections with the same outer width may have different height, corner or thickness requirements.
Example enquiry checklist
Stainless steel rectangular tube; grade; width × height; wall; corner geometry; cut length; finish; quantity; drawing.
Stainless Steel Rectangular Tube supplier enquiries in Mumbai, India
Tokk Steel is the stainless steel pipes and tubes division of Shatrunjay Special Alloy in Mumbai, India. Send your stainless steel rectangular tube specification to our team with the grade, dimensions and quantity required by your project.
For a local enquiry in Mumbai, include your preferred collection or delivery arrangements for review. For a project elsewhere in India, include the destination and required date so availability, logistics and the quotation scope can be confirmed. Your location does not replace the technical specification: attach the drawing or material requirement when one is available.
Request a product quotation ↗Specification details for this product
| Detail | Information to provide |
|---|---|
| Outside width and height | Specify with the enquiry |
| Wall thickness and corner geometry | Specify with the enquiry |
| Length and dimensional tolerance | Specify with the enquiry |
Typical application areas
- Fabrication assemblies
- Frames and supports
- Project-specific structural requirements
Final material suitability should be assessed against your project’s operating conditions and applicable standards.
Buying stainless steel rectangular tube
Specify outside width and height separately, plus wall thickness, corner requirements and cut length.
Define the section geometry
Outside width, height, wall thickness and corner geometry should be defined together. Do not apply round-tube dimensions to a shaped section.
Questions about Stainless Steel Rectangular Tube
What should I specify for stainless steel rectangular tube?
Specify outside width and height separately, plus wall thickness, corner requirements and cut length.
Are all listed sizes and grades held in stock?
Availability, dimensions, lead time and documentation are confirmed with your quotation. Send your exact requirement rather than assuming availability from a product category.
Quotation questions
What should I include in my enquiry?
Include grade, dimensions, quantity, required standard, finish and delivery destination. Attach your specification when sending the email draft.
Can you confirm sizes and availability?
Our team will review your dimensions and confirm availability and lead time as part of the quotation.
