Jiaxing Haina Fastener Co.,Limited
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SS304 SS316 ASTM F593E Long full thread Structural steel hex Bolt
Product Description
A ANSI 304 stainless steel hex Head bolt that is produced as ASTM F593 Group 1 must have additional processes performed that exceed the requirements of A193 grade B8. These bolts must be stamped with manufacturer’s identifier, “F593″, and the proper condition designation, and if the bolts are hot formed, they must also be carbide solution annealed. Additionally, F593 bolts must pass an intergranular corrosion test, which is not required when bolts are ordered as type 304 stainless steel or under the ASTM A193 grade B8 specification. F593 does not have the same 8UN series thread requirement above 1″ diameter as A193 grade B8, and is typically provided with Unified National Coarse threads. The F593 specification is also characterized by a maximum diameter of 1-1/2”.
F593 specification covers the chemical and mechanical requirements for stainless steel bolts, hex cap screws and studs in diameters ranging from 1/4" to 1-1/2" inclusive.Seven groups of stainless steel alloys are covered, including ten austenitic, two ferritic, four martensitic, and one precipitation hardening. These fasteners are for general purpose usage and are available in seven alloy groups. Please contact us for more details by email info@hainafastener.com
F593 Alloy Groups
| Group | Alloy | Condition |
|---|---|---|
| 1 | 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se | (CW) Cold worked |
| 2 | 316, 316L | (CW) Cold worked |
| 3 | 321, 347 | (CW) Cold worked |
| 4 | 430, 430F | (CW) Cold worked |
| 5 | 410, 416, 416Se | (H) Hardened and Tempered |
| 6 | 431 | (H) Hardened and Tempered |
| 7 | 630 (17-4) | (AH) age Hardened |
F593 Chemical Composition
| Element | Group 1 ( AISI 304 ) | Group 2 ( AISI 316 ) |
|---|---|---|
| Carbon | 0.08% | 0.08% |
| Manganese, min | 2.00% | 2.00% |
| Phosphorus, max | 0.045% | 0.045% |
| Sulfur, max | 0.030% | 0.030% |
| Silicon | 1.00% | 1.00% |
| Chromium | 18.0 to 20.0% | 16.0 to 18.0% |
| Nickel | 8.0 to 10.5% | 10.0 to 14.0% |
| Copper | 1.00% | |
| Molybdenum | 2.00 to 3.00% |
F593 Mechanical Requirements
| Alloy Group | Condition | Alloy Mechanical Property Marking | Nominal Dia,in. | Tensile Strength, ksi min | Yield strength ksi min | Rockwell Hardness |
|---|---|---|---|---|---|---|
| 1 | AF | F593A | 1/4 to 1-1/2 | 65 to 85 | 20 | B85 max |
| A | F593B | 1/4 to 1-1/2 | 75 to 100 | 30 | B65 to 95 | |
| CW1 | F593C | 1/4 to 5/8 | 100 to 150 | 65 | B95 to C32 | |
| CW2 | F593D | 3/4 to 1-1/2 | 85 to 140 | 45 | B80 to C32 | |
| 2 | AF | F593E | 1/4 to 1-1/2 | 65 to 85 | 20 | B85 max |
| A | F593F | 1/4 to 1-1/2 | 75 to 100 | 30 | B65 to 95 | |
| CW1 | F593G | 1/4 to 5/8 | 100 to 150 | 65 | B95 to C32 | |
| CW2 | F593H | 3/4 to 1-1/2 | 85 to 140 | 45 | B80 to C32 |
| Nuts | Washers |
|---|---|
| F594 | SS304 or SS316 |
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Certification
Through scientific management, Jiaxing Haina fastener Ltd company has been obtained ISO9000 certificate of Quality Managerment System, SGS and BV international certificate system of Make in China.