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Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL3 Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B8 CL3 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 | |
| B8M CL3 Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
| 7/8 – 1 | 100 | 80 | 20 | 45 | |
| 1-1/8 – 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 – 1-1/2 | 90 | 50 | 30 | 45 |
| Element | B8 CL3 | B8 CL3 | B8M CL3 |
| 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% |
At Sumakhsteel, we take pride in being the largest supplier and manufacturer in the USA, delivering advanced solutions for all your piping requirements. With cutting-edge production facilities strategically situated in the USA, we maintain an extensive inventory of more than 25,000 tons of top-quality materials readily on hand in stock.
Reach out to us for a fast quote tailored to your requirement.
We supply these ASTM A193 B8 CL3 Bolts in accordance with DIN, ISO, JIS or ANSI Standard.
High Temperature Resistance: These bolts are constructed from AISI 347 stainless steel, a material that delivers outstanding resistance to high temperatures. As a result, they are well suited for uses where exposure to elevated temperatures poses a concern.
Corrosion Resistance: AISI 347 stainless steel offers strong corrosion resistance, particularly in settings that demand resistance to oxidation and sulfidation. This guarantees durability and dependability under demanding operating conditions.
Strength and Durability: ASTM A193 B8 Class 3 bolts are produced to satisfy defined mechanical properties, such as tensile strength and hardness requirements. This ensures they are able to endure high stress and loads without deforming or failing.
Suitability for Various Applications: These bolts see frequent use in sectors like oil and gas, chemical processing, and power generation, where high-pressure and high-temperature conditions are common. They also work well for uses that call for high reliability and safety.
Compliance with Standards: ASTM A193 B8 Class 3 bolts comply with the demanding standards established by ASTM International, guaranteeing uniformity in quality, performance, and safety. Adherence to these standards offers confidence in their reliability and fitness for critical applications.
ASTM A193 B8 CL3 Bolts serve applications as varied as the industries that use them, led mainly by the aerospace, railway, construction and automotive sectors along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
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