What is B8 bolt material?
ASTM A193 Grade B8 Raw Material
| Grade | Tensile Class | Raw Material Description |
|---|---|---|
| B8 | Class 1 | AISI 304 Stainless Steel, Carbide Solution Treated |
| B8 | Class 2 | AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened |
What does ASTM A193 mean?
ASTM A193 Grade B7 specification covers requirements for high tensile alloy steel bolting material for use in high temperature or high-pressure service and other special purpose applications.
What is A193 B8?
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. Grade B8M fasteners are used for high strength pipeline bolting applications.
What is the difference between B8 and B8M?
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.
Is A193 B8 stainless steel?
ASTM A193 Grade B8 Class 1 bolts and threaded studs are manufactured from AISI 304 stainless steel. A193 Grade B8 Class 2 bolts are strain hardened after carbide solution treatment to achieve increased strength characteristics and reduce the potential for galling.
What is carbide solution treated?
Carbide solution treatment, also referred to as solution annealing, is a process in which fasteners or stainless bars are heated and then water-quenched to assure maximum corrosion resistance.
Is b8 stainless steel?
Good oxidation resistance in temperatures up to 870ºC. Continuous use of 304 in the 425-860ºC range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.
What is A193 b8?
Is B8M the same as 316?
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.
Are Grade 8 bolts more brittle than Grade 5?
It is true that grade 8 bolts are more brittle than grade 5. In general (although not always the case), steels that have a higher strength are less ductile . Grade 8 bolts have a higher strength and, therefore, would require fewer bolts in a joint than grade 5.
What is ASTM stainless steel?
ASTM A182 F6a is a forged martensitic stainless steel with 13 wt.% chromium. Martensitic stainless steels can be high-carbon or low-carbon steel alloys. The ASTM standard A182 describes the general set of specifications about several material grades.
What is a stainless steel bolt?
Stainless Steel Bolts is basically an iron-based alloy with minimum 10.5% chromium content. The word Stainless is derived from its oxidation resistance properties thus making the steel passive to corrosion often known by the technical term corrosion resistance.