At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A479/A479M. Standard specification for stainless steel bars and shapes for use in boilers and other pressure vessels. Widely used as bar stock for machined studs, bolts, nuts and internals in stainless pressure equipment.
Standard specification for stainless steel bars and shapes for use in boilers and other pressure vessels. Widely used as bar stock for machined studs, bolts, nuts and internals in stainless pressure equipment.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| 304 / 304L | S30400 / S30403 | Austenitic 18-8 |
| 316 / 316L | S31600 / S31603 | Austenitic Mo-bearing |
| 321 | S32100 | Ti-stabilized austenitic |
| 347 | S34700 | Nb-stabilized austenitic |
| 410 | S41000 | Martensitic 12Cr (heat treated) |
| XM-19 (Nitronic 50) | S20910 | High-strength austenitic |
| 2205 duplex | S32205 / S31803 | Duplex ferritic-austenitic |
Minimum mechanical requirements per ASTM A479/A479M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| 304 | 75 ksi (515 MPa) | 30 ksi (205 MPa) | 30 | 201 HBW / 92 HRB max |
| 304L | 70 ksi (485 MPa) | 25 ksi (170 MPa) | 30 | 201 HBW max |
| 316 | 75 ksi (515 MPa) | 30 ksi (205 MPa) | 30 | 217 HBW / 95 HRB max |
| 316L | 70 ksi (485 MPa) | 25 ksi (170 MPa) | 30 | 217 HBW max |
| 321 / 347 | 75 ksi (515 MPa) | 30 ksi (205 MPa) | 30 | 201-223 HBW max |
| 410 (heat treated) | 70 ksi (485 MPa) | 40 ksi (275 MPa) | 20 | 223 HBW max |
| XM-19 | 100 ksi (690 MPa) | 55 ksi (380 MPa) | 35 | – |
| 2205 duplex | 95 ksi (655 MPa) | 65 ksi (450 MPa) | 25 | 31 HRC max |
| Grade | Key Composition, % |
|---|---|
| 304 | Cr 18-20, Ni 8-10.5, C 0.08 max |
| 316 | Cr 16-18, Ni 10-14, Mo 2-3, C 0.08 max |
| 321 | Cr 17-19, Ni 9-12, Ti 5xC min |
| 2205 | Cr 22-23, Ni 4.5-6.5, Mo 3-3.5, N 0.14-0.20 |
ASME SA-479; bar analog of A182/A276; grade chemistries per ASTM A959/UNS. Austenitic grades match A193 B8/B8M bolt chemistries.
For the official ASTM International standards catalogue, see the ASTM International standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We supply ASTM A479/A479M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
Standard specification for stainless steel bars and shapes for use in boilers and other pressure vessels. Widely used as bar stock for machined studs, bolts, nuts and internals in stainless pressure equipment.
Ananka Fasteners supplies 304 / 304L, 316 / 316L, 321, 347, 410, XM-19 (Nitronic 50), 2205 duplex to ASTM A479/A479M. See the Grades / Classes Covered table above for full details of each grade.
Minimum tensile strength, yield strength, elongation and hardness requirements vary by grade — see the Mechanical Properties table above for the complete breakdown.
We supply ASTM A479/A479M fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
Yes. For a quotation, provide the required fastener type, grade, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need a fastener released to ASTM A479/A479M for an industrial project? Send the required fastener type, grade, size, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: ASTM A479/A479M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A479/A479M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
