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ASTM F837 SS S30400 Screws, ASTM F837 Socket Head Cap Bolts, ASTM F837 Stainless Steel UNS A30403 Bolts Manufacturer in Mumbai, India.
Production, Supply, Stock Range of ASTM F837 Fastenres
Standard Specification for Stainless Steel Socket Head Cap Screws
This specification covers chemical and mechanical requirements for stainles steel inch (imperial) series socket head cap screws with nominal thread diameter 0.060 through 1.500 inch., intended for use in applications requiring general corrosion resistance. This specification contains two group of stainless steel alloys i.e, Austenitic Group 1 & Martensitic Group 5. ASTM F837M is a companion to ASTM F837 developed for metric size stainless steel socket head cap screws from M1.6 to M38. Four property conditions are covered: austenitic alloy group 1 in as annealed consition (AF) at 85 ksi maximum, in two cold worked conditions (CW) at 80 ksi minimum, (CW1) at 102 ksi minimum, and martensitic alloy group 5 in a heat treated condition (HT) at 160 ksi minimum. Ferrobend manufactures socket head cap screws as per both specifications duly tested and supplied with EN 10204 Type 3.1 Certification. We offer almost all grades under this specification, 304, 304L, 316, 316L, 303, being most commonly used alloys.
ASTM F837 Chemical Properties
| Composition, %, maximum except as shown | |||||||||||
| UNS Designation | Alloy Group | Alloy | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Copper | Molybdenum |
| Austenitic Alloys | |||||||||||
| S30300 | 1 | 303A | 0.15 | 2.00 | 0.200 | 0.150 min | 1 | 17.0 - 19.0 | 8.0 - 10.0 | -- | 0.60 maxB |
| S30400 | 1 | 304 | 0.08 | 2.00 | 0.045 | 0.03 | 1 | 18.0 - 20.0 | 8.0 - 10.5 | 1.00 | -- |
| A30403 | 1 | 304L | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 18.0 - 20.0 | 8.0 - 12.0 | 1.00 | -- |
| S30500 | 1 | 305 | 0.12 | 2.00 | 0.045 | 0.03 | 1 | 17.0 - 19.0 | 10.5 - 13.0 | 1.00 | -- |
| S38400 | 1 | 384 | 0.08 | 2.00 | 0.045 | 0.030 | 1 | 15.0 - 17.0 | 17.0 - 19.0 | -- | -- |
| S20300 | 1 | XM1A | 0.08 | 5.00 - 6.50 | 0.400 | 0.18 - 0.35 | 1 | 16.0 - 18.0 | 5.0 - 6.5 | 1.75 - 2.25 | 0.50maxB |
| S30430 | 1 | 18-9LW | 0.10 | 2.00 | 0.045 | 0.030 | 1 | 17.0 - 19.0 | 8.0 - 10.0 | 3.0 - 4.0 | -- |
| S30433 | 1 | 302HQ | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 17.0 - 19.0 | 8.0 - 10.0 | 3.0 - 4.0 | -- |
| S31600 | 1 | 316 | 0.08 | 2.00 | 0.045 | 0.030 | 1 | 16.0 - 18.0 | 10.0 - 14.0 | -- | 2.0 - 3.0 |
| S31603 | 2 | 316 L | 0.03 | 2.00 | 0.045 | 0.030 | 1 | 16.0 - 18.0 | 10.0 - 14.0 | -- | 2.0 - 3.0 |
| Martensitic Alloys | |||||||||||
| S41000 | 5 | 410 | 0.15 | 1.00 | 0.040 | 0.030 | 1 | 11.5 - 13.5 | -- | -- | -- |
ASTM F837 Bolts Mechanical Properties
| Alloy Group | Condition | Nominal Thread DiameterA | Full Size Product | Machined Specimen | Core HardnessB | ||||
| Tensile Strength, ksi | Minimum ExtensionC | Tensile Strength, ksi | Yield Strength, ksi | Minimum Elongation, % | Vickers | Rockwell | |||
| 1 | AF | 0.06 - 1.50 | 85 max | 0.6D | 85 max | 55 max | 40 | 210 max | 95 HRB max |
| 1 | CW | 0.06 - 1.75 | 80 min | 0.4D | 80 min | 40 min | 25 | 150 min | 50 HRA min |
| 1 | CW1 | 0.06 - 1.75 | 102 min | 0.4D | 87 min | 65 min | 20 | 220 min | 59 HRA min |
| 5 | HT | 0.06 - 0.19 | 180 min | -- | -- | -- | -- | 350 - 423 | 36 - 43 HRC |
| 5 | HT | 0.06 - 1.50 | 180 min | 0.2D | 160 min | 120 min | 12 | 350 - 423 | 36 - 43 HRC |
ASTM F837 Bolts Manufacturer, ASME F837 Bolts Supplier in India- ASME, DIN, AS, BS
Torq Bolt is a leading manufacturer and exporter of ASTM F837 fastenrs in India. Our inventory includes astm a182 gr. f51 duplex steel fasteners in many grades including 12 point Bolts DIN 934, ISO 4033, ISO 4032, DIN 935,DIN 936, ASME B18.2.2, ASME B18.2.4.6M nuts, threaded rod/bar, studs, double end studs, tap end studs DIN 976, DIN 975, DIN 2510, DIN 939, DIN 940, DIN 938 studbolts are readily available in all standard sizes and schedules.
