ASTM A193 Grade B8R Stud Bolts
1.4311, 304LN, S30451, X2CRNIN18-10
ASTM A193 Grade B8R Bolts are manufactured from 305 Stainless Steel in accordance with ASTM A193 specification. Torqbolt is a prominent A193 gr B8R bolt supplier in India.
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ASTM A193 Grade B8R Stud Bolts Properties
ASTM A193 Grade B8R Stud Bolts Chemical Requirements
Austenitic Steels
| Grade | Description and UNS Designatio | Classes | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | CbF | Ti | V | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A193 Grade B8R | S20910 | 1C, 1D | 0.06 | 4.0-6.0 | 0.045 | 0.030 | 1.00 | 20.5-23.5 | 11.5-13.5 | 1.50-3.00 | . . . | 0.10-0.30 | . . . | 0.10-0.30 | 0.20-0.40 |
| Product Analysis VariationB | 0.01 | 0.05 | 0.005 | 0.005 | 0.05 | 0.25 | 0.15 | 0.10 | . . . | 0.05 | . . . | 0.02 | 0.02 |
ASTM A193 Grade B8R Stud Bolts Mechanical Requirements
Austenitic Steels (Inch)
| Grade | Diameter, in. |
Heat TreatmentB | Tensile Strength, min, ksi |
Yield Strength, min, 0.2 % offset, ks |
Elongation in 4 D,min | Reduction of Area, min | Hardness, max |
|---|---|---|---|---|---|---|---|
| ASTM A193 Grade B8R Classes 1C and 1D | All diameters | carbide solution treated | 100 | 55 | 35 | 55 | 271 HBW or 28 HRC |
Austenitic Steels (Metric)
| Grade Class , mm |
Diameter | Heat TreatmentB | Tensile Strength, min,MPa |
Yield Strength, min, 0.2 % offset, MPa |
Elongation in 4 D,min % | Reduction of Area, min % | Hardness, max |
|---|---|---|---|---|---|---|---|
| ASTM A193M Grade B8R All diameters Classes 1C and 1D | All diameters | carbide solution treated | 690 | 380 | 35 | 55 | 271 HBW or 28 HRC |