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Torq Bolts Inc. is one of the prominent traders and suppliers of ASTM A193 Bolts, which have wide applications. ASME SA193 Bolts is often used for seam welding wheels, welding fixture parts and spot welding electrodes. ASTM A193 Hex Bolts is also used for components in offshore, sea water desalination, waste water, chemical plants through aggressive chloride-containing media, such as heat exchangers, pump and compressor components. We are an unparalleled name in offering a premium quality ASTM A193 Square Bolts, which is manufactured using finest quality material & modern techniques in fulfilment with the industry laid standards. We offer these ASTM A193 12-Point Bolts that has some great features such as Highly demanded, Premium quality, Reasonable price, Rugged construction, Application specific, Longer functional life, Durability, Easy to install, Corrosion resistance and more.
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AISI 304 Bolts, Alloy Steel AISI 4140/4135/4142 12 Point Bolts, Stainless Steel AISI 316 Flex Lock Bolts Manufacturer in Mumbai, India.
Production, Supply, Stock Range of ASTM A193 / A193M Bolts
Thread Diameters : Up to 2-1/2
Threads Configuration : ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification : Dual Certified As per ASTM & ASME Codes
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service
The specification for ASTM A193 covers alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. The ASTM A193 specification covers bars, bolts, screws, studs, stud bolts, and wire. The material may be further processed by centerless grinding or by cold drawing. Below are some of the ASTM A193 grades used commonly by Torq Bolts.
ASTM A193 Bolts
| ASTM A193 B7 | Alloy steel, AISI 4140/4142 quenched and tempered |
| ASTM A193 B8 | Class 1 Stainless steel, AISI 304, carbide solution treated. |
| ASTM A193 B8M | Class 1 Stainless steel, AISI 316, carbide solution treated. |
| ASTM A193 B8 | Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
| ASTM A193 B8M | Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened |
ASTM A193 Characteristics
| Grade | Description | Diameter | Tensile Strength, min. | Yield Strength, min. | Hardness, max. | Marking |
| ASTM A193 B7 | Chromium-Molybdenum | 2 1/2” and under | 125 | 105 | 321 HB or 35 HRC | B7 |
| over 2 1/2” to 4” | 115 | 95 | 321 HB or 35 HRC | |||
| over 4” to 7” | 100 | 75 | 321 HB or 35 HRC | |||
| ASTM A193 B8 class 1 | S30400 (304) | all | 75 | 30 | 223 HB or 96 HRB | B8 |
| ASTM A193 B8 class 2 | S30400 (304) | 3/4” and under | 125 | 100 | 321 HB or 35 HRC | B8SH |
| over 3/4” to 1” | 115 | 80 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 105 | 65 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 100 | 50 | 321 HB or 35 HRC | |||
| ASTM A193 B8M class 1 | S31600 (316) | all | 75 | 30 | 223 HB or 96 HRB | B8M |
| ASTM A193 B8M class 2 | S31600 (316) | 3/4” and under | 110 | 95 | 321 HB or 35 HRC | B8MSH |
| over 3/4” to 1” | 100 | 80 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 95 | 65 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 90 | 50 | 321 HB or 35 HRC |
ASTM A193 Chemical Properties
| Element | B7 (AISI 4140) | B8 (AISI 304) | B8M (AISI 316) |
| Carbon | 0.37 - 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 - 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 - 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 - 1.20% | 18.0 - 20.0% | 16.0 - 18.0% |
| Nickel | - | 8.0 - 11.0% | 10.0 - 14.0% |
| Molybdenum | 0.15 - 0.25% | - | 2.00 - 3.00% |
ASTM A193 / A193M Bolts Manufacturer, SA193 Bolts Supplier in India- ASME, DIN, AS, BS
Tarq Bolt is a leading manufacturer and exporter of astm a193 bolts in India. Our inventory includes astm sa193 bolts in many grades including Alloy Steel AISI 4140/4135/4142 bolts are readily available in all standard sizes and schedules.
