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Our company specializes in providing a diverse range of ASTM A193 B8 CL4 Bolts, sourced from trusted suppliers known for their expertise in manufacturing high-quality alloy steel products. These bolts play a crucial role in securely fastening various components, offering a comprehensive selection of sizes, grades, and industry standards to meet a wide range of customer needs. Highly regarded in industries such as construction and engineering, our premium ASTM A193 B8 CL4 Bolts are valued for their exceptional resistance to corrosion and wear. Engineered with specialized alloys and subjected to rigorous heat treatment processes, these bolts are designed to enhance hardenability, ensuring consistent mechanical properties throughout their structure.
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL4 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 CL4 | 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 CL4 Class 1 | All | 75 | 30 | 30 | 50 |
B8M CL4 Class 1 | All | 75 | 30 | 30 | 50 |
B8 CL4 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 CL4 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 CL4 | B8 CL4 | B8M CL4 |
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% |
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We offer These ASTM A193 B8 CL4 Bolts as per DIN, ISO, JIS or ANSI Standard.
High Temperature Resistance: These bolts are made from AISI 347 stainless steel, which provides excellent resistance to high temperatures, up to 800-900°C (1472-1652°F) in continuous service.
Corrosion Resistance: AISI 347 stainless steel has good resistance to corrosion, especially in environments where oxidation and scaling are concerns. This makes B8 CL4 bolts suitable for applications in mildly corrosive environments.
Mechanical Properties: ASTM A193 B8 CL4 bolts have good mechanical properties, including tensile strength and yield strength, which ensure reliability and durability in demanding conditions.
Weldability: AISI 347 stainless steel is readily weldable using common welding techniques, which adds to its versatility in manufacturing and assembly processes.
Standard Compliance: Being part of ASTM A193 standard, B8 CL4 bolts ensure compliance with industry standards, which is crucial for applications requiring specific material properties and performance characteristics.
ASTM A193 B8 CL4 Bolts applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
ASTM A193 B8 CL4 bolts, made from AISI 347 stainless steel, are generally resistant to galvanic corrosion when used in typical industrial environments. However, in specific conditions where dissimilar metals are present, precautions may be necessary to prevent galvanic corrosion.
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