ASTM A193 B6 Stud bolt Manufacturer
We are a trusted manufacturer and exporter of ASTM A193 Grade B6 stud bolts, offering precision-engineered fasteners made from stainless steel Type 410. Our B6 stud bolts are ideal for high-temperature and high-pressure applications, especially in industries such as petrochemical, oil & gas, power generation, and refineries.
ASTM A193 B6 Martensitic Stainless Steel Stud Bolts for High-Temperature Service
ASTM A193 B6 stud bolts are manufactured from AISI 410 martensitic stainless steel, designed for high-temperature and moderate corrosion resistance applications. Produced in accordance with ASTM A193, Grade B6 stud bolts offer good mechanical strength, oxidation resistance, and reliable performance in pressure vessels, flanges, valves, and fittings.
ASTM A193 B6 fasteners are commonly used in steam systems, power plants, refineries, and high-temperature piping systems.
What Is ASTM A193 B6?
ASTM A193 is the standard specification for alloy steel and stainless steel bolting materials for high-temperature or high-pressure service.
Grade B6 specifically refers to martensitic stainless steel (AISI 410), heat-treated to achieve the required strength and hardness.
ASTM A193 Grade B6 refers to a martensitic class of stainless steel, also it is known as AISI 410. which is Intended to make the stud bolt used in general purposes.
12% Chromium Ferritic Steel. ASTM A193 Grade B6 is a material specification for 12% chromium- alloyed Ferritic steel
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 |
Material Specification.
- Standard: ASTM A193
- Grade: B6
- Material: 410 Stainless Steel (UNS S41000) – A martensitic stainless steel
- Heat Treatment: Hardened and tempered
chemical composition of AISI 410 stainless steel
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.08 – 0.15 |
| Chromium (Cr) | 11.5 – 13.5 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Nickel (Ni) | 0.75 max |
Mechanical Properties of AISI 410 Stainless Steel
| Bolt Grade | Diameter, in. | Tensile Strength, ksi | Yield Strength ksi | Elongation, % | Reduction, % | Hardness |
|---|---|---|---|---|---|---|
| B6 | up to 4, inclusive | 110 | 85 | 15 | 50 | Not Defined |
Heat Resistance of grade 410 stainless steels
Grade 410 steels have good scaling resistance at temperatures of up to 650 °C. However, the mechanical properties of the material will tend to reduce at temperatures ranging from 400 to 580 °C
ASTM A193 B6 Stud Bolt Dimensions & Threading
- Standard Dimensions: ASME B18.2.1 / ASME B18.31.2
- Threading: UNC (Coarse), UNF (Fine), or Metric per ASME B1.1 / B1.13M
- Size: ¼ to 4″ [6-100 mm]
- Length: Available in standard and custom cut lengths
Heat Treatment
ASTM A193 B6 stud bolts are supplied in a quenched and tempered condition to achieve the required mechanical properties and hardness suitable for high-temperature service.
Nuts Used with ASTM A193 B6 Stud Bolts
- ASTM A194 Grade 6 nuts (AISI 410)
- Nuts must be compatible in strength and corrosion resistance
Testing & Inspection
ASTM A193 B6 stud bolts undergo:
- Chemical analysis
- Tensile testing
- Hardness testing
- Dimensional inspection
- Visual inspection
Why ASTM A193 B6 Stud Bolts?
Higher Strength than Austenitic Stainless Steels (304, 316)
Good Oxidation Resistance at High Temperatures (Up to 1200°F)
More Cost-Effective than High-Nickel Stainless Steels
ASTM A193 B6 stud bolts made from AISI 410 stainless steel provide a reliable fastening solution for high-temperature pressure systems requiring moderate corrosion resistance and high mechanical strength. Fully compliant with ASTM A193 and ASME standards, B6 stud bolts are widely trusted in power generation and refinery applications.
