Specification | Class | Material | Nominal Size Range (in.) |
Mechanical Properties | ||||
Yield Strength, min, 0.2 % offset, ksi |
Tensile Strength, min, ksi |
Elongation in 4 D, min % |
Reduction of Area, min % |
Hardness, max |
||||
ASTM A193 Grade B8 |
Class 1 Class 1A |
AISI 304 | All diameter | 30 | 75 | 30 | 50 | 223HB or 96HRBC |
ASTM A193 Grade B8M |
AISI 316 | |||||||
ASTM A193 Grade B8T |
AISI 321 | |||||||
ASTM A193 Grade B8 |
Class 2 |
AISI 304 Strain Hardened | 3/4 and under | 100 | 125 | 12 | 35 | 321HB or 35HRC |
3/4 to 1 incl | 80 | 115 | 15 | |||||
1 to 1-1/4 incl | 65 | 105 | 20 | |||||
1-1/4 to 1-1/2 incl | 50 | 100 | 28 | 45 | ||||
ASTM A193 Grade B8M |
3/4 and under | 95 | 110 | 15 | ||||
3/4 to 1 incl | 80 | 100 | 20 | |||||
1 to 1-1/4 incl | 65 | 95 | 25 | |||||
1-1/4 to 1-1/2 incl | 50 | 90 | 30 | |||||
ASTM A193 Grade B8T |
AISI 321 Strain Hardened | 3/4 and under | 100 | 125 | 12 | 35 | ||
3/4 to 1 incl | 80 | 115 | 15 | |||||
1 to 1-1/4 incl | 65 | 105 | 20 | |||||
1-1/4 to 1-1/2 incl | 50 | 100 | 28 | 45 | ||||
ASTM A193 Grade B8M |
Class 2B | AISI 316 Strain Hardened | 2 and under | 75 | 95 | 25 | 40 | |
2 to 2-1/2 incl | 65 | 90 | 30 | |||||
2-1/2 to 3 incl | 55 | 80 | ||||||
Class 2C | 2 and under | 65 | 85 | 60 | ||||
Over 2 | 60 | |||||||
Specification | Material | Class | Nominal Size (In.) | Proof Load Stress (ksi) | Hardness Rockwell | Nut Type | ||
Min | Max | |||||||
ASTM A194 Grade 8 | AISI 304 | Class 1 | All diameter | 80 | B60 | C32 | Heavy hex nut Hex thin nut Hex nut |
|
ASTM A194 Grade 8M | AISI 316 | Class 1 Class 2 |
110 | |||||
ASTM A194 Grade 8T | AISI 321 | 110 |
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