ASTM A193 Grade B6 is a material specification for high tensile stainless steel bolts, stud bolts, threaded rods and other external threaded fasteners. ASTM A193 Grade B6 Bolts are manufactured from AISI 410 stainless steel bar stock or forging stock, machined and heat-treated to minimum of 110-ksi tensile strength.
ASTM A193 Grade B6 Raw Material
| Grade |
Raw Material Description |
| B6 |
13% Chromium Ferritic Steel (AISI 410 Stainless Steel) |
ASTM A193 Grade B6 Properties
ASTM A193 Grade B6 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 B6 Mechanical Properties |
| Grade |
Diameter |
Tensile Strength |
Yield Strength |
Elongation |
Reduction |
Hardness |
| Grade B6 |
Up to M100, inclusive |
760 |
585 |
15 |
50 |
-- |
Heat Treatment
Quenched & Tempered at 593ยบ C minimum.
ASTM A193 Grade B6 Bolt Marking
| Manufacturer's Mark |
Grade Marking |
| BPF |
B6 |
Recommended Nuts & Washers
| Bolting Grade |
Nut Grade |
Washer Grade |
| ASTM A193 Grade B6 |
ASTM A194 Grade 6 |
Mild Steel |
ASTM A193 Grade B6 Bolting