ASTM A193 Grade B6X 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 B6X Raw Material

Grade Raw Material Description
B6X 13% Chromium Ferritic Steel

ASTM A193 Grade B6X Properties

ASTM A193 Grade B6X Chemical Composition

Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium
0.08-0.15 1.00 0.040 0.030 1.00 max 11.5 - 13.5

ASTM A193 Grade B6X Mechanical Properties

Grade Diameter Tensile Strength Yield Strength Elongation Reduction Hardness
Grade B6X Up to M100, inclusive 620 485 16 50 26 HRC

Heat Treatment

Quenched & Tempered at 593ยบ C minimum.

ASTM A193 Grade B6X Bolt Marking

Manufacturer's Mark Grade Marking
BPF B6X

Recommended Nuts & Washers

Bolting Grade Nut Grade Washer Grade
ASTM A193 Grade B6X ASTM A194 Grade 6 Mild Steel

ASTM A193 Grade B6X Bolting

Hex Bolt Heavy Hex Bolts Stud Bolts Threaded Rods Anchor Bolts
Eye Bolts Socket Head Cap Screws Countersunk Screws J Bolts Square Head Bolts