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 ↗
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.
ASTM A312: pipe scope and dimensional reference
ASTM A312 covers seamless, welded and heavily cold-worked austenitic stainless steel pipe. The published scope points to ASME B36.19 for standardised stainless steel pipe dimensions. The material specification is separate from the piping system’s design code.
| Reference item | Technical guidance |
|---|---|
| Product form | Austenitic stainless steel pipe |
| Construction routes in scope | Seamless, welded and heavily cold-worked |
| Dimensional reference | ASME B36.19 as identified in the specification |
| Order details | TP grade, size/schedule, length and supplementary requirements |
How to use this information
State the TP grade, construction, ordered edition and dimensions together. A312 on its own does not identify the schedule, operating pressure or required supplementary inspection.
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 A312/A312M-25 — pipe specification
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 TP 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 |
Use ASTM A312 as the specification framework
An ASTM A312 enquiry still needs an exact TP grade and manufacturing route. Include the required standard edition, pipe size and schedule or actual dimensions, length and end condition. State supplementary testing or documentation requirements explicitly rather than assuming they are included in every quotation.
Comparing supplier quotations
Keep the standard, grade and supplied condition consistent when comparing offers. ASTM A312 is a pipe specification; a tube drawing may need a different governing standard.
Example enquiry checklist
ASTM A312; required edition; TP grade; construction; pipe size/schedule; length; end condition; supplementary requirements; quantity.
ASTM A312 Stainless Steel Pipe supplier enquiries in Mumbai, India
Tokk Steel is the stainless steel pipes and tubes division of Shatrunjay Special Alloy in Mumbai, India. Send your astm a312 stainless steel pipe 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 |
|---|---|
| ASTM A312 edition and exact TP grade | Specify with the enquiry |
| Manufacturing route | Specify with the enquiry |
| Dimensions and supplementary requirements | 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 astm a312 stainless steel pipe
State the applicable ASTM A312 edition, exact TP grade, construction type, dimensions and inspection requirements.
Define the purchase specification
The material standard and grade designation are different parts of the specification. State both, including the applicable edition, before requesting a quotation.
Questions about ASTM A312 Stainless Steel Pipe
What should I specify for astm a312 stainless steel pipe?
State the applicable ASTM A312 edition, exact TP grade, construction type, dimensions and inspection requirements.
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.
