What is A193 B8M material?
ASTM A193 Grade B8M is a standard material specification for high tensile 316/316L stainless steel bolts, screws, studs or other external threaded fasteners for high-temperature, high-pressure service and other special purpose applications.
What is B8M bolt?
Grade B8 bolts are made from type 304 stainless steel, while Grade B8M bolts are made from a more corrosion-resistant type 316 stainless steel.
What is B8M class1?
ASTM A193 Grade B8M Class 1 is a standard material specification for corrosion resistant 316 stainless steel fasteners such as bolts, screws, studs, threaded rods and other externally threaded parts, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels …
What is the difference between B8M Class 1 and Class 2?
Grade B8M Class 1 fasteners require carbide solution treatment, while Class 2 fasteners require an additional strain hardening operation which increases the strength and reduces the susceptibility to galling. Class 2 fasteners are marked “B8MSH” with the grade symbol underlined.
What is ASTM A193 Grade B16?
Alloy ASTM A193 Grade B16 is a bolting specification for high temperature service. It is a heat treated Chromium-Molybdenum-Vanadium steel. The specification calls for minimum strength and maximum hardness levels. It is considered to be most suitable for bolts used at temperatures below 840°F or 450° C.
Is B16 stainless steel?
ASTM A193 Grade B16 bolts and threaded studs are manufactured from a chromium-molybdenum-vanadium alloy steel. Unlike the stainless steel grades within the A193 specification, Grade B16 has no corrosion-resistant properties unless they are coated.
What grade is a B8 bolt?
Grade B8 stud bolts are made of AISI 304 stainless steel. These type of fasteners are made with austenitic stainless steel and require carbide solution treatment.
What is the difference between Class 1 and Class 2 bolts?
Class 1 fasteners are carbide solution treated, while class 2 fasteners are carbide solution treated and strain hardened. The work hardening that occurs in the manufacturing of Class 2 fasteners increases their strength.
What is a B7 bolt?
Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strength requirement of 125 ksi (860 Mpa), yield 105 ksi (720 Mpa), and maximum hardness of 35HRC. Boltport uses Alloy Steel AISI 4140 bar stock or forging stock to produce B7 headed and non-headed bolts.
What is the difference between B7 and B16 bolts?
The “big brother” of B7 studs, B16 studs are found in similar situations, but are specified when a higher temperature is required. Vanadium is the main composition difference that separates B16 from B7, allowing the higher temperature limits.
What material is B16 studs?
chromium-molybdenum-vanadium alloy steel
Grade B16 Studs They are manufactured from a chromium-molybdenum-vanadium alloy steel, Although A193 Grade B16 bolts and studs have similar strength requirements as Grade B7, the fasteners retain strength under high temperatures, and also experience less relaxation at those high temperatures.
What kind of stud bolts are in ASTM A193?
Very commonly used in the assembly of industrial pipe & valves, the chemical composition of ASTM A193 Grade B8M Class 2 Stud Bolts are considered nearly identical to grade 316 stainless steel, hover they are also strain hardened. Email us your inquiries at [email protected]
When to use a B8M Class 2 stud bolt?
ASTM A193 B8M Class 2 stud bolts are commonly used in marine and other heavy industrial environments that require corrosion resistant fasteners to be used. It is offten incorrectly thought that B8 studs and fasteners (304 stainless) are mechanically weeker than B8M studs and fasteners (316 stainless steel).
What is ASTM A193 grade B8M Class 2?
ASTM A193 Grade B8M Class 2 is a standard material specification for corrosion resistant 316 stainless steel fasteners such as bolts, screws, studs, threaded rods and other externally threaded parts, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure…
What kind of stud bolts do we use?
Many of our industrial projects that we supply material to include anchor bolts, and also stud bolts of many different ASTM grades. These include B7, L7, B16, B8, B8M, stain hardened and many more. In addition to being an ISO certified fastener manufacturer, we were awarded “Corporate Supplier of the Year” by WBENC.