ASTM A193 Grade B7, B7M, B16 Threaded Rod
Application: Primarily for fasteners such as bolts, nuts, and studs used in pressure vessels, steam turbines, reactors, and other high-temperature or high-pressure systems.
Materials: It covers several grades of materials that are designed to withstand elevated temperatures (up to 800°F or 427°C) and environments where strength and corrosion resistance are critical.
Grades: ASTM A193 includes various material grades, including Grade B7, Grade B7M, and Grade B16, which provide different levels of performance in terms of tensile strength, temperature tolerance, and corrosion resistance.
Testing Requirements: Fasteners made from materials complying with ASTM A193 are subjected to rigorous tests to ensure they meet the minimum tensile strength, yield strength, and elongation properties required for their
application.
| 01 ASTM A193 Grade B7 | Material: Chromium-molybdenum steel (AISI 4140 or 4142) Tensile Strength: Minimum 125 ksi (862 MPa). Applications: Commonly used in power plants, pressure vessels, and high-temperature environments. Temperature Range: Suitable for temperatures up to 450°F (232°C). Properties: Excellent mechanical strength. High temperature resistance. Suitable for bolting applications in critical environments where high strength is essential. |
| 02 ASTM A193 Grade B7 | Material: Chromium-molybdenum steel (AISI 4140 or 4142) Tensile Strength: Minimum 125 ksi (862 MPa). Applications: Commonly used in power plants, pressure vessels, and high-temperature environments. Temperature Range: Suitable for temperatures up to 450°F (232°C). Properties: Excellent mechanical strength. High temperature resistance. Suitable for bolting applications in critical environments where high strength is essential. |
| 03 ASTM A193 Grade B7 | Material: Chromium-molybdenum steel (AISI 4140 or 4142) Tensile Strength: Minimum 125 ksi (862 MPa). Applications: Commonly used in power plants, pressure vessels, and high-temperature environments. Temperature Range: Suitable for temperatures up to 450°F (232°C). Properties: Excellent mechanical strength. High temperature resistance. Suitable for bolting applications in critical environments where high strength is essential. |
| Property | Grade B7 | Grade B7M | Grade B7M |
| Material | Chromium-molybdenum steel | Low-alloy steel with higher molybdenum content | Low-alloy steel with higher molybdenum content |
| Tensile Strength | 125 ksi (862MPa) | 125 ksi (862MPa) | 125 ksi (862MPa) |
| Temperature Range | Up to 450°F (232℃) | Up to 450°F (232℃) | Up to 450°F (232℃) |
| Corrosion Resistance | Standard | Enhanced | Enhanced |
| Applications | Power plants, pressure vessels | Corrosive environments like marine applications | Corrosive environments like marine applications |
SAE J429 Grade 8
SAE J429 Grade 8
SAE J429 Grade 8
