A193 Gr B7

The ASTM A193 Grade B7 is the industry standard for high-tensile alloy steel bolting materials designed for high-temperature and high-pressure service, widely used in oil & gas, chemical processing, and heavy infrastructure. A193Gradeb7Portlandbolt

Product Overview & Technical Standards

* Material: Quenched and tempered Chromium-Molybdenum alloy steel (AISI 4140/4142). Ssmalloys

* Performance: Offers a minimum tensile strength of 125 ksi (860 MPa) and a yield strength of 105 ksi (720 MPa) for diameters up to 2.5 inches. Portlandbolt

* Heat Treatment: Must be tempered at a minimum of 1100°F (593°C) to ensure structural stability in extreme environments. Lightningboltandsupply

* Applications: Primarily used in pressure vessels, valves, flanges, and piping systems. A193Gradeb7Kglilly

Market Trends & Insights (2025–2034)

* Steady Growth: The global bolts market is projected to grow from $67.08 billion in 2026 to $92.51 billion by 2034, at a CAGR of 4.1%. Straitsresearch

* EV Impact: Electric vehicles are driving demand for high-spec "torque-to-yield" bolts. While EVs use fewer parts, the fasteners required are 30-40% more expensive due to tighter tolerances and advanced anti-corrosion coatings (e.g., Zinc-Nickel). Mordorintelligence

* Renewable Energy Momentum: The expansion of offshore wind farms is increasing the demand for large-diameter, corrosion-resistant B7 studs (M36-M72). Mordorintelligence

* Regulatory Shifts: Stricter seismic building codes in North America and Japan are moving the construction industry toward pre-tensioned high-strength bolts (up to 200 ksi), reducing the reliance on standard carbon steel. Mordorintelligence

Sourcing Intelligence

Current B2B market data shows highly competitive pricing for B7 stud bolts and nuts, with bulk prices as low as $0.01 – $0.06 per piece depending on size and order volume. AlibabaAlibaba Leading suppliers are concentrated in industrial hubs like Shanghai, Suzhou, and Jiaxing. AlibabaAlibaba