At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to ASTM A240. ASTM A240/A240M covers chromium, chromium-nickel and chromium-manganese-nickel stainless steel plate, sheet and strip for pressure vessels and general applications. For fasteners it is the plate/blank source for washers, spacers, backing plates and flange faces. Grades include austenitic (304, 304L, 316, 316L, 321, 317L), duplex (2205/S32205) and super-austenitic (904L). ASME SA-240 is the identical BPVC adoption.
ASTM A240/A240M covers chromium, chromium-nickel and chromium-manganese-nickel stainless steel plate, sheet and strip for pressure vessels and general applications. For fasteners it is the plate/blank source for washers, spacers, backing plates and flange faces. Grades include austenitic (304, 304L, 316, 316L, 321, 317L), duplex (2205/S32205) and super-austenitic (904L). ASME SA-240 is the identical BPVC adoption.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| 304 | S30400 | 18Cr-8Ni austenitic |
| 304L | S30403 | Low-carbon 304 for welded parts |
| 316 | S31600 | 16Cr-10Ni-2Mo austenitic |
| 316L | S31603 | Low-carbon 316, pitting resistant |
| 321 | S32100 | Ti-stabilized austenitic |
| 317L | S31703 | Higher-Mo austenitic |
| 2205 | S32205 | 22Cr duplex ferritic-austenitic |
| 904L | N08904 | Super-austenitic, high Mo/Ni |
Minimum mechanical requirements per ASTM A240.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| 304 | 75 (515) | 30 (205) | 40 | 201 HBW / 92 HRB |
| 304L | 70 (485) | 25 (170) | 40 | 201 HBW / 92 HRB |
| 316 | 75 (515) | 30 (205) | 40 | 217 HBW / 95 HRB |
| 316L | 70 (485) | 25 (170) | 40 | 217 HBW / 95 HRB |
| 321 | 75 (515) | 30 (205) | 40 | 217 HBW / 95 HRB |
| 2205 (S32205) | 95 (655) | 65 (450) | 25 | 293 HBW / 31 HRC |
| 904L | 71 (490) | 31 (215) | 35 | 200 HBW / 90 HRB |
| Grade | Key Composition, % |
|---|---|
| 304 | C 0.08 max, Cr 18-20, Ni 8-10.5 |
| 316 | C 0.08 max, Cr 16-18, Ni 10-14, Mo 2-3 |
| 316L | C 0.030 max, Cr 16-18, Ni 10-14, Mo 2-3 |
| 2205 | C 0.030 max, Cr 22-23, Ni 4.5-6.5, Mo 3-3.5, N 0.14-0.20 |
| 904L | C 0.020 max, Cr 19-23, Ni 23-28, Mo 4-5, Cu 1-2 |
ASME SA-240 is the identical BPVC adoption. Grade equivalents: 304/304L to A276 bar and A182 F304; 316/316L to A182 F316; 2205 to A182 F51/F60. Plate used to fabricate washers and spacers paired with A193/A320 bolting.
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 A240 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.
ASTM A240/A240M covers chromium, chromium-nickel and chromium-manganese-nickel stainless steel plate, sheet and strip for pressure vessels and general applications. For fasteners it is the plate/blank source for washers, spacers, backing plates and flange faces. Grades include austenitic (304, 304L, 316, 316L, 321, 317L), duplex (2205/S32205) and super-austenitic (904L). ASME SA-240 is the identical BPVC adoption.
Ananka Fasteners supplies 304, 304L, 316, 316L, 321, 317L, 2205, 904L to ASTM A240. 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 A240 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 A240 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 A240 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per ASTM A240 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
