ASTM A193 Grade B8CLN Bolts, Stud Bolts, Fasteners
Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
ASTM A193 specification covers alloy and stainless steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. Several grades are covered, including ferritic steels and austenitic stainless steels designated B5, B6, B7, B8, B8M, etc.
Selection will depend upon design, service conditions, mechanical properties, and high temperature characteristics. This specification is expressed in both inch-pound units
and in SI units; however, unless the purchase order or contract specifies the applicable A193M specification designation (SI units), the inch-pound units shall apply
ASTM A193 Grade B8CLN Raw Material
| Grade |
Raw Material Description |
| B8CLN |
AISI 347LN Stainless Steel, Carbide Solution Treated |
ASTM A193 Grade B8CLN Properties
ASTM A193 Grade B8CLN Chemical Composition |
| Carbon |
Manganese, max |
Phosphorus, max |
Sulfur, max |
Silicon |
Chromium |
Molybdenum |
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ASTM A193 Grade B8CLN Mechanical Properties |
| Grade |
Diameter |
Tensile Strength |
Yield Strength |
Elongation |
Reduction |
Hardness |
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ASTM A193 Grade B8CLN Marking Requirements
| Class |
Manufacture's Marking |
Grade Symbol |
| Class 1 |
BPF |
B8Y or B8CLN |
| Class 1D |
BPF |
B103 |
Recommended Nuts & Washers
| Bolting Grade |
Nut Grade |
Washer Grade |
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ASTM A193 Grade B8CLN Bolting