The standard material specification for ASTM A193 grade B8 includes steel fasteners composed of authentic stainless steel and resistant to corrosion. They are primarily used in sewage treatment, chemical construction applications,
wind farms, and shipbuilding.
A193 Grade B8
| B8 |
Stainless steel, AISI 304, carbide solution treated. |
Mechanical properties
| Size |
Tensile ksi, min |
Yield ksi, min |
Elong %, min |
RA % min |
HBW |
Rockwell |
| All |
75 |
30 |
30 |
50 |
223 Max |
96 HRB max |
Chemical properties
| Element |
B8 (AISI 304) |
| Carbon |
0.08% max |
| Manganese |
2.00% max |
| Phosphorus, max |
0.045% |
| Sulfur, max |
0.03% |
| Silicon |
1.00% max |
| Chromium |
18.0 - 20.0% |
| Nickel |
8.0 - 11.0% |
| Molybdenum |
- |
Compatible hardware
| Bolt Grade |
Nut |
Washers |
| B8 |
A194 Grade 8 |
SS304 |
