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ASTM A193 B8C stud bolts represent the pinnacle of high-temperature stainless fastener technology — engineered from columbium-stabilized 347 stainless steel to withstand thermal punishment, corrosive media, and uncompromising industrial rigor. At Hazlewood Fasteners in Canberra, Australia, we supply B8C stud bolts crafted for mission-critical bolting assemblies where pressure, heat, and chemical stress are constant adversaries. These premium studs maintain their structural poise and locking integrity in refinery units, chemical plants, high-pressure steam networks, and power-generation infrastructure. When process environments turn hostile and conventional fasteners collapse, B8C stud bolts deliver elite stability, corrosion mastery, and absolute fastening reliability.
ASTM A193 B8C stud bolts are manufactured from niobium-stabilized 347 stainless steel, delivering exceptional immunity to carbide precipitation and intergranular corrosion under intense heat. Their chromium-nickel alloy foundation offers powerful oxidation resistance, while heat treatment enhances tensile and yield strength for demanding temperature-cyclic service. Precision threading and hardened grain structure ensure superior torque retention, vibration endurance, and long-cycle mechanical stability. Built to thrive in harsh chemical and thermal conditions, these studs guarantee steadfast fastening strength where mechanical fatigue and corrosive attack continuously push material limits.
| Element | B7 | B8 | B8M |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 515 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 205 |
| Elongation in 4D (El) | 30 |
| Reduction | 50 |
| Hardness – (BHN) | 0 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8C Stud Bolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200 mm
|
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Engineered for unforgiving industrial terrain, ASTM A193 B8C stud bolts are deployed across refinery piping systems, petrochemical plants, superheater circuits, boiler assemblies, heat-exchanger mounts, gas turbine housings, and high-temperature pressure vessels. Their stabilized stainless formulation ensures performance where steam, corrosive condensates, and thermal cycling test structural integrity. Perfect for anchoring flanges, valves, reactors, pumps, and exhaust manifolds, these stud bolts excel in environments that demand unwavering fastening security. When plant engineers require stud bolts capable of thriving in corrosive, heat-driven, and high-stress applications, B8C studs stand firm — delivering lasting power and precision.
At Hazlewood Fasteners, we ensure the highest quality for our ASTM A193 B8C stud bolts through meticulous packaging. Each stud bolt is carefully inspected and packed in robust, tamper-evident containers to prevent damage during transit. Our packaging includes clear, industry-standard labeling for easy identification and traceability. Designed to protect against environmental factors, our packaging solutions ensure that the fasteners arrive in optimal condition, ready for use in high-temperature and high-pressure applications.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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