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 | — | — | — |
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 |
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 ↗
Pipe dimensions and schedules — reference chart
Selected B36.19 dimensions as published in Alleima’s pipe chart. This is a dimensional reference, not a stock or availability list.
| NPS (in.) | OD (mm) | 10S wall (mm) | 40S wall (mm) | 80S wall (mm) |
|---|---|---|---|---|
| 1/4 | 13.72 | 1.65 | 2.24 | 3.02 |
| 3/8 | 17.15 | 1.65 | 2.31 | 3.20 |
| 1/2 | 21.34 | 2.11 | 2.77 | 3.73 |
| 3/4 | 26.67 | 2.11 | 2.87 | 3.91 |
| 1 | 33.40 | 2.77 | 3.38 | 4.55 |
| 1¼ | 42.16 | 2.77 | 3.56 | 4.85 |
| 1½ | 48.26 | 2.77 | 3.68 | 5.08 |
| 2 | 60.33 | 2.77 | 3.91 | 5.54 |
| 2½ | 73.03 | 3.05 | 5.16 | 7.01 |
| 3 | 88.90 | 3.05 | 5.49 | 7.62 |
| 3½ | 101.60 | 3.05 | 5.74 | 8.08 |
| 4 | 114.30 | 3.05 | 6.02 | 8.56 |
Calculated pipe weight — 40S examples
Calculated using density 8.00 g/cm³ and nominal dimensions: kg/m = π/4 × (OD² − ID²) × density / 1000. Dimensions are in mm. Actual mass varies with alloy density and tolerances; these are not certified weights.
| NPS (in.) | OD (mm) | Wall (mm) | ID (mm) | Approx. kg/m |
|---|---|---|---|---|
| 1/4 | 13.72 | 2.24 | 9.24 | 0.646 |
| 3/8 | 17.15 | 2.31 | 12.53 | 0.862 |
| 1/2 | 21.34 | 2.77 | 15.80 | 1.293 |
| 3/4 | 26.67 | 2.87 | 20.93 | 1.717 |
| 1 | 33.40 | 3.38 | 26.64 | 2.550 |
| 1¼ | 42.16 | 3.56 | 35.04 | 3.454 |
| 1½ | 48.26 | 3.68 | 40.90 | 4.123 |
| 2 | 60.33 | 3.91 | 52.51 | 5.544 |
| 2½ | 73.03 | 5.16 | 62.71 | 8.802 |
| 3 | 88.90 | 5.49 | 77.92 | 11.509 |
| 3½ | 101.60 | 5.74 | 90.12 | 13.829 |
| 4 | 114.30 | 6.02 | 102.26 | 16.383 |
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.
304L: material identity and selection
304L is identified as UNS S30403. Its lower-carbon designation is relevant to material selection where welding and intergranular corrosion are considered. A 304L requirement should remain explicit throughout the enquiry.
| Reference item | Technical guidance |
|---|---|
| Grade designation | 304L |
| UNS identifier | S30403 |
| Material family | Low-carbon austenitic chromium-nickel stainless steel |
| Pipe specification to review | ASTM A312, where required by the project |
| Tube specification to review | ASTM A269 or the application-specific tube standard |
How to use this information
Dual 304/304L certification depends on the material satisfying the applicable requirements. Request documentary confirmation rather than assuming every 304 product is dual certified.
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: Alleima 3R12 — 304/304L grade reference · ASTM A312/A312M-25 — pipe specification · ASTM A269/A269M-25 — general-service 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 | 304L |
| 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 304L traceable through the enquiry
Specify 304L explicitly rather than sending a generic 304 request. Where welding or fabrication is part of the project, include the relevant material and fabrication requirements in the enquiry. List any documentation needed to identify the supplied grade. A lower-carbon grade designation does not remove the need to define finish, tolerances and inspection.
Comparing supplier quotations
When documentation is required, establish what certificate is needed before ordering. Compare the grade designation on the quotation and certificate with the purchase requirement.
Example enquiry checklist
SS 304L pipe; construction; nominal pipe size and schedule or actual dimensions; length; quantity; required material documentation.
SS 304L Pipes & Tubes supplier enquiries in Mumbai, India
Tokk Steel is the stainless steel pipes and tubes division of Shatrunjay Special Alloy in Mumbai, India. Send your ss 304l pipes & tubes 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 |
|---|---|
| Exact grade and governing standard | Specify with the enquiry |
| Pipe or tube dimensional designation | Specify with the enquiry |
| Construction type and documentation | Specify with the enquiry |
Typical application areas
- Project-specific equipment
- Industrial assemblies
- Requirements defined by your design
Final material suitability should be assessed against your project’s operating conditions and applicable standards.
Buying ss 304l pipes & tubes
Specify 304L explicitly when your project requires the lower-carbon grade, and confirm the designation in material documentation.
Define the purchase specification
Match the exact grade on the enquiry, quotation and material documentation. Any proposed substitution should be reviewed against the project requirements.
Grade guidance: Outokumpu stainless steel types. Check the applicable material specification for acceptance criteria.
Questions about SS 304L Pipes & Tubes
What should I specify for ss 304l pipes & tubes?
Specify 304L explicitly when your project requires the lower-carbon grade, and confirm the designation in material documentation.
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.
