Recommend Products
Name: Fujian Monel 400 Double End Stud Material: Monel 400 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: Resistant to hydrofluoric acidQS Fastener: Monel 400 Double End Stud
Name: Inconel 625 Double End Stud Material: Inconel 625 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 625 Double End Stud
Name: Xiamen Inconel 600 High Strength Fastener Material: Inconel 600 Standard: ASME Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 High Strength Fastener
Name: Inconel 600 Stud Bolt Putian Material: Inconel 600 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 Stud Bolt
Color-Zinc Coated Allen Bolt
QS Fastener: Color-Zinc Coated Allen Bolt
Name: Color-Zinc Coated Allen Bolt
Standard: ASTM
Material: A193 B7
Size: 1/2 to 4 inch
Thread: 4-1/2 UNC
Length: 30 to 1000 mm
Grade: A
Application: Oil Pipeline, Machinery, Chemical Industry, Building
Standard: ASTM
Material: A193 B7
Size: 1/2 to 4 inch
Thread: 4-1/2 UNC
Length: 30 to 1000 mm
Grade: A
Application: Oil Pipeline, Machinery, Chemical Industry, Building
Quantity
The Color-Zinc Coated Allen Bolt is made of ASTM A193 B7 high-strength alloy steel, with sizes ranging from 1/2 to 4 inches and lengths from 30 to 1000 mm. It complies with the 4-1/2 UNC thread standard and meets Class A quality assurance. Its color-zinc coating provides exceptional corrosion resistance, making it suitable for applications in oil pipelines, mechanical equipment, the chemical industry, and construction engineering. It meets the demands of high stress, corrosion resistance, and aesthetics, offering an efficient and reliable fastening solution.
ASTM A193 B7 is a high-strength, high-toughness chromium-molybdenum alloy steel specifically designed for high-temperature and high-pressure environments. Its excellent mechanical properties, heat resistance, and corrosion resistance make it an ideal choice for demanding applications in petrochemical, nuclear power, boilers, and pressure vessels.
Mechanical Properties
The Color-Zinc Coated Allen Bolt, based on ASTM A193 B7 material, exhibits the following mechanical properties:
Tensile Strength: ≥860 MPa
Yield Strength: ≥725 MPa
Elongation: ≥16% (gauge length of 50 mm)
Reduction of Area: ≥50%
Hardness: HRC 22-32 (after quenching and tempering)
Impact Toughness: ≥27 J (Charpy V-notch impact test at room temperature)
The Color-Zinc Coated Allen Bolt, based on ASTM A193 B7 material, exhibits the following mechanical properties:
Tensile Strength: ≥860 MPa
Yield Strength: ≥725 MPa
Elongation: ≥16% (gauge length of 50 mm)
Reduction of Area: ≥50%
Hardness: HRC 22-32 (after quenching and tempering)
Impact Toughness: ≥27 J (Charpy V-notch impact test at room temperature)
High-Temperature Performance
B7 material maintains excellent strength and toughness at high temperatures. Below are its typical performance data at elevated temperatures:
At 400°C, tensile strength is approximately 650 MPa, and yield strength is approximately 550 MPa.
At 450°C, tensile strength is approximately 600 MPa, and yield strength is approximately 500 MPa.
Creep Resistance: At 450°C and 100 MPa stress, the creep rate is below 1×10⁻⁷ mm/mm·h.
Oxidation Resistance: At 450°C, the oxidation rate is below 0.1 mm/year.
B7 material maintains excellent strength and toughness at high temperatures. Below are its typical performance data at elevated temperatures:
At 400°C, tensile strength is approximately 650 MPa, and yield strength is approximately 550 MPa.
At 450°C, tensile strength is approximately 600 MPa, and yield strength is approximately 500 MPa.
Creep Resistance: At 450°C and 100 MPa stress, the creep rate is below 1×10⁻⁷ mm/mm·h.
Oxidation Resistance: At 450°C, the oxidation rate is below 0.1 mm/year.
Heat Treatment Process
The B7 material of the Color-Zinc Coated Allen Bolt typically undergoes quenching and tempering to achieve optimal mechanical properties:
Quenching Temperature: 850-900°C, oil or water cooling.
Tempering Temperature: 550-650°C, air cooling.
Post-treatment Hardness: HRC 22-32.
The B7 material of the Color-Zinc Coated Allen Bolt typically undergoes quenching and tempering to achieve optimal mechanical properties:
Quenching Temperature: 850-900°C, oil or water cooling.
Tempering Temperature: 550-650°C, air cooling.
Post-treatment Hardness: HRC 22-32.
Corrosion Resistance
The chromium and molybdenum elements in B7 material provide excellent corrosion resistance:
Superior resistance to steam oxidation in high-temperature steam environments.
Good resistance to sulfide stress corrosion cracking in acidic environments containing hydrogen sulfide (H₂S).
Corrosion rate below 0.01 mm/year in water solutions with a pH of 6-9.
The chromium and molybdenum elements in B7 material provide excellent corrosion resistance:
Superior resistance to steam oxidation in high-temperature steam environments.
Good resistance to sulfide stress corrosion cracking in acidic environments containing hydrogen sulfide (H₂S).
Corrosion rate below 0.01 mm/year in water solutions with a pH of 6-9.
Surface Treatment
To enhance corrosion resistance and aesthetics, the Color-Zinc Coated Allen Bolt can undergo the following surface treatments:
Zinc Plating: Zinc layer thickness of 5-15 µm, suitable for general corrosive environments.
Phosphating: Phosphate coating thickness of 2-6 µm, suitable for lubrication requirements.
Coatings: Such as epoxy or polyurethane coatings, suitable for extreme corrosive environments.
To enhance corrosion resistance and aesthetics, the Color-Zinc Coated Allen Bolt can undergo the following surface treatments:
Zinc Plating: Zinc layer thickness of 5-15 µm, suitable for general corrosive environments.
Phosphating: Phosphate coating thickness of 2-6 µm, suitable for lubrication requirements.
Coatings: Such as epoxy or polyurethane coatings, suitable for extreme corrosive environments.
ASTM A193 B7 chromium-molybdenum alloy steel, with its excellent chemical composition, mechanical properties, and high-temperature performance, is the material of choice for high-temperature and high-pressure environments. The Color-Zinc Coated Allen Bolt, with its exceptional corrosion resistance, high strength, and aesthetic appeal, is widely used in petrochemical, nuclear power, boiler, and pressure vessel industries, providing safety and durability in demanding working conditions.
Send Message
