China ASTM A193 B6 stud bolt ASTM A194 Grade 6 Nuts manufacturer

A193 B6 stud bolts are a type of high-temperature, corrosion-resistant alloy steel fastener commonly used in chemical, petrochemical, and power generation industries. They are made from ASTM A193 Grade B6 steel, which is a chromium-molybdenum alloy steel with excellent corrosion resistance properties.

A193 Grade B6 is a heat-treated 12% chromium-ferritic magnetic 410 stainless steel with minimum tensile strength requirement of 110 ksi and yield 85 ksi. ASTM A193 specification covers requirements for chemical composition, mechanical properties, hardness, heat-treatment and recommended nuts-washers for Grade B6 Fasteners.

 A193 Grade B6 stud bolt Chemical Composition

Element Ferritic Steel
Chromium Stainless Steel
CompositionA, %
Carbon 0.08 – 0.15
Manganese 1.00
Phosphorus 0.040 max
Sulfur 0.030 max
Silicon 1.00 max
Chromium 11.5 – 13.5

A: The intentional addition of Bi, Se, Te, and Pb is not permitted.

A193 Grade B6 stud bolt Mechanical Properties

Diameter, inch. Tensile Strength,
min, ksi		 Yield Strength,
min, 0.2% offset,
ksi		 Elongation
in 4D,
min, %		 Reduction
of Area,
min, %		 Hardness,
max
up to 4, inclusive 110 85 15 50 Not Defined

Heat Treatment: Quenched & Tempered at 1100º F minimum.

Recommended Nuts & Washers for A193 Grade B6 stud bolt

Nut Specification Washer Specification
ASTM A194 Grade 6 SS 410

 

ASTM A193 B6 Stud bolt specification 

ASTM A193 Grade B6 stud bolts are available in a wide range of diameters and lengths to meet diverse industrial needs.

  • Diameter:

    • Standard Range: 1/4 inch to 4 inches
    • Metric Equivalents: M6 to M100 (or custom sizes based on requirements)

  • Length:

    • Available in standard lengths ranging from 1 inch to 144 inches.
    • Custom lengths are typically available upon request.

  • Threading Options:

    • Fully threaded or partially threaded options depending on the application.
    • Thread types include:
      • UNC (Unified National Coarse)
      • UNF (Unified National Fine)
      • Metric Threads

A193 B6 stud bolts are typically heat treated to achieve the desired mechanical properties and are available in various sizes and lengths to accommodate different applications. They are often used in high-temperature and high-corrosion environments and provide excellent resistance to stress corrosion cracking and pitting corrosion. It’s important to ensure that the stud bolts are installed and torqued correctly to ensure optimal performance and safety in the application.