At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A336/A336M. Standard specification for alloy steel and stainless steel forgings for pressure and high-temperature parts, e.g. flanges, valve bodies, fittings and forged components for pressure vessels and piping. Used as feedstock for forged/machined studs, nuts and pressure parts.
Standard specification for alloy steel and stainless steel forgings for pressure and high-temperature parts, e.g. flanges, valve bodies, fittings and forged components for pressure vessels and piping. Used as feedstock for forged/machined studs, nuts and pressure parts.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| F1 | K12822 | C-0.5Mo |
| F11 Cl2/Cl3 | K11572 | 1.25Cr-0.5Mo |
| F12 | K11757 | 1Cr-0.5Mo |
| F5 / F5A | K41545 | 5Cr-0.5Mo |
| F9 | K90941 | 9Cr-1Mo |
| F22 Cl1/Cl3 | K21590 | 2.25Cr-1Mo |
| F91 | K90901 | 9Cr-1Mo-V (Grade 91) |
| F6 / F304 / F316 | S30400 / S31600 | Martensitic / austenitic stainless variants |
Minimum mechanical requirements per ASTM A336/A336M.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| F1 | 70-95 ksi (485-655 MPa) | 40 ksi (275 MPa) | 20 | – |
| F11 Cl2 | 70-95 ksi (485-655 MPa) | 40 ksi (275 MPa) | 20 | – |
| F11 Cl3 | 75-100 ksi (515-690 MPa) | 45 ksi (310 MPa) | 20 | – |
| F12 | 70-95 ksi (485-655 MPa) | 40 ksi (275 MPa) | 20 | – |
| F5 | 60-85 ksi (415-585 MPa) | 30 ksi (205 MPa) | 20 | – |
| F22 Cl3 | 75-100 ksi (515-690 MPa) | 45 ksi (310 MPa) | 20 | – |
| F9 | 85-110 ksi (585-760 MPa) | 55 ksi (380 MPa) | 20 | – |
| F91 | 85-110 ksi (585-760 MPa) | 60 ksi (415 MPa) | 18 | 248 HBW max |
| Grade | Key Composition, % |
|---|---|
| F1 | C 0.20-0.30, Mn 0.60-0.80, Mo 0.40-0.60 |
| F11 | Cr 1.00-1.50, Mo 0.44-0.65, C 0.05-0.15 |
| F22 | Cr 2.00-2.50, Mo 0.87-1.13, C 0.05-0.15 |
| F5 | Cr 4.00-6.00, Mo 0.45-0.65 |
| F9 | Cr 8.00-10.00, Mo 0.90-1.10 |
| F91 | Cr 8.00-9.50, Mo 0.85-1.05, V 0.18-0.25, Nb 0.06-0.10, N 0.03-0.07 |
Shares grade chemistries and mechanicals with ASTM A182 (forged flanges/fittings) and A387 plate; grades accepted under ASME SA-336.
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 A336/A336M 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 alloy steel and stainless steel forgings for pressure and high-temperature parts, e.g. flanges, valve bodies, fittings and forged components for pressure vessels and piping. Used as feedstock for forged/machined studs, nuts and pressure parts.
Ananka Fasteners supplies F1, F11 Cl2/Cl3, F12, F5 / F5A, F9, F22 Cl1/Cl3, F91, F6 / F304 / F316 to ASTM A336/A336M. 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 A336/A336M 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 A336/A336M 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 A336/A336M requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A336/A336M and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
