What does ASTM A193 mean?
ASTM A193 B7 is a Bolting specification for medium-high temperature applications. It is a heat treated Chromium Molybdenum steel and is considered for applications up to 450° Celsius (840° Fahrenheit).
Is A193 stainless steel?
ASTM A193 Grade B6 bolts and threaded rods are manufactured from AISI 410 stainless steel which has been quenched and tempered to increase strength. Because these bolts are manufactured from stainless steel, they are used in highly corrosive environments with elevated ambient temperatures.
Is ASTM A193 Grade B8 stainless steel?
ASTM A193 Grade B8 is a standard material specification for corrosion resistant austenitic stainless steel fasteners, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels bolting.
Is B8M the same as 316?
A193 Grade B8M is chemically equivalent to AISI 316/316L stainless steel with improved strength, categorized in two different tensile classes namely class 1 and class 2.
What is the difference between A193 and A320?
The only difference between the two bolts is intended application. A193 bolts are intended for high temperature and high pressure applications, while A320 bolts are for cold temperature applications.
Is A320 L7 stainless steel?
Grade 660 fasteners are used in bolting boilers, pressure vessels, pipeline flanges and valves, intended for high temperature service. . ASTM A320 Grade L7 material is chemically equivalent to ASTM B638 grade 660 stainless steel alloy, also known by alloy A286 and UNS S66286, heat treated to achieve properties defined …
What is ASTM A193 B7?
ASTM A193 Grade B7 is a standard material specification for chromium-molybdenum alloy steel fasteners for use in high tensile, high temperature and special purpose applications.
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.
What is the difference between B8 and B8M?
These bolts have similar strength requirements but differ in their corrosion resistance. 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 material is ASTM A193 B7?
treated chromium-molybdenum alloy steel
Grade B7 is a heat-treated chromium-molybdenum alloy steel with minimum tensile requirement of 100 ksi, yield of 75 ksi and maximum hardness of 35 HRC. ASTM A193 specification covers requirements for chemical composition, mechanical properties, hardness, heat-treatment, recommended nuts-washers for Grade B7 fasteners.
What is ASTM A193 specification?
ASTM A193 specification for alloy-steel and stainless steel fasteners for high tensile or high temperature applications. This specifications covers various alloy & stainless steel bolting grades with requirements for chemical composition, mechanical properties, heat-treatment, recommended nuts-washers and bolt markings. ASTM A193 Specification Home
What is the difference between a153m and a194m?
A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware A194/A194M Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
What is the difference between ASTM A193 grade B8M Class 2 bolts?
Class 2 bolts are marked “ B8SH ” with the grade symbol underlined. ASTM A193 Grade B8M Class 1 fasteners are similar to Grade B8 but instead are manufactured from AISI 316 stainless steel as opposed to AISI 304 stainless steel. Type 316 stainless offers superior corrosion resistance to type 304 stainless due to the added molybdenum.
What is astm-a193 mechanical properties?
This specification covers ASTM-A193 Mechanical Properties for inch and metric size alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature service. The term bolting used in this specification includes bars, bolts, hex bolts, hex head cap screws, screws, studs, stud bolts, and wires.