ASTM A193 Grade B6 Stud bolt AISI 410 Stud Bolt with A194 grade 6 Hex Nuts
Martensitic Stainless Steel Stud Bolts for High-Temperature & Corrosive Service
ASTM A193 Grade B6 stud bolts are manufactured from martensitic stainless steel (Type 410) and are designed for high-temperature, high-pressure, and moderately corrosive environments. Produced in accordance with ASTM A193, Grade B6 stud bolts offer good strength, hardness, and oxidation resistance, making them suitable for valves, flanges, pressure vessels, and refinery equipment.
B6 stud bolts are commonly used where carbon steel fasteners are insufficient and austenitic stainless steel is not required.
We are the professional manfacturer of ASTM A193 Grade B6 stud bolts and A194 Grade 6 Hex nuys in China
What Is ASTM A193?
ASTM A193 is the standard specification for alloy steel and stainless steel bolting materials intended for high-temperature or high-pressure service, or both.
Material Grade: ASTM A193 Grade B6
ASTM A193 Grade B6 is a martensitic stainless steel bolting grade, equivalent to AISI 410 stainless steel, offering a balance of strength and corrosion resistance.
ASTM A193 Grade B6 stud bolts,threaded rods are made from 12% chromium ferritic 410 stainless steel.
ASTM A193 B6 is a high-temperature ferritic stainless steel (UNS 41000, 410 stainless steel) bolting specification for extreme applications in heavy industry. ASTM A194 Grade 6 nuts (UNS 41000, 410 stainless steel) are the corresponding nut. Grade B6 studs and Grade B6 heavy hex bolts are 12-13 % chromium.
According to the specification ASTM A193 B6 Stainless Steel Bolts standards are used in those applications that demand the use of high tensile strength.The raw material used to manufacture A193 B6 Stainless Steel Studs is the ferritic grade AISI 410 stainless steel. This grade of stainless steel contains about 13% chromium in the alloy.
ASTM A193 Grade B6 stud bolts Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| B6(AISI 410) | 1.4006 | S41000 | SUS 410 | 410S21 | – | – | X12Cr13 |

ASTM A193 Grade B6 stud bolts Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| B6 (AISI 410) | 0.08 – 0.15 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 11.5 – 13.5 | – | – | – |
ASTM A193 Grade B6 Mechanical Properties
| Bolt Grade | Diameter, in. | Tensile Strength, ksi | Yield Strength ksi | Elongation, % | Reduction, % | Hardness |
|---|---|---|---|---|---|---|
| B6 | up to 4, inclusive | 110 | 85 | 15 | 50 | Not Defined |
Raw Material Of ASTM A193 Grade B6
| Grade | Raw Material Description |
|---|---|
| A193 B6 Bolts | 13% Chromium Ferritic Steel (AISI 410 Stainless Steel) |
The SA193 Gr B6 Stud bolt have minimum 760MPa tensile strength and 585MPa minimum yield strength. The elongation is 15% and the hardness varies. The stud bolt of the Asme Sa 193 B6 have excellent corrosion resistance, dimensional stability, strength, durability and long lasting life. The pharmaceutical, food production, condensers, coolers, heat exchangers, chemical and marine applications use the different types of fasteners such as the ASTM A193 B6 Bolts.
ASTM A193 Grade B6 Stud bolt and ASTM A194 Grade 6 nuts are supplied Continuous thread flange bolting stud, ASME B18.31.2
Type :
Full threads, Partial Threads, and customized as per requirements.
SIZE :
Nom Dia: ¼ to 4″ [6-100 mm]
Tailor made if required.
Length: As Per Standard or Upto any Length
SPECIFICATION / STANDARD :ASTM / ASME / BS / DIN / BS EN ISO
MATERIAL :C.S., M.S., Alloy Steel, Ferritic & Austenitic Stainless Steel
THREADS :UNC, 8UN, UNF, Metric Coarse & Fine Series.
ASTM A193 Grade B6 stud bolts are available in a wide range of diameters and lengths to meet diverse industrial needs.
- Diameter:
- Standard Range: 1/4 inch to 4 inches
- Metric Equivalents: M6 to M100 (or custom sizes based on requirements)
- Length:
- Available in standard lengths ranging from 1 inch to 144 inches.
- Custom lengths are typically available upon request.
- Threading Options:
- Fully threaded or partially threaded options depending on the application.
- Thread types include:
- UNC (Unified National Coarse)
- UNF (Unified National Fine)
- Metric Threads
ASTM A193 Grade B6 stud bolts provide reliable strength, good corrosion resistance, and stable performance in high-temperature and moderately corrosive environments. Manufactured from martensitic stainless steel and compliant with ASTM A193, B6 stud bolts are a proven fastening solution for valves, flanges, and pressure equipment in refinery and power plant service.