High-Strength Stainless Steel Fasteners Inconel Bolts - China Suppliers and Factory

Mainly contains chromium (16–26%) and nickel (6–22%). Common grades include 304 and 316.

Strong corrosion resistance, non-magnetic, good toughness, easy to process, and excellent welding performance.

• Food Processing & Kitchenware: Austenitic stainless steel (e.g., 1.4310CSPFH, SUS301) is widely used in food processing equipment, kitchenware (knives, pots) and tableware, meeting food-grade cleaning requirements and being less likely to contaminate food.
• Chemical & Energy Equipment: Used in reaction vessels, pipelines, storage tanks, etc., resistant to corrosive media such as acids, alkalis, and salts. In petroleum and natural gas, it is used for valves and pump shafts; S20910 stainless steel is suitable for high-temperature and high-pressure environments.
• Architecture & Decoration: Used for exterior walls, railings, roofs, etc., combining beauty and durability.
• Transportation — Automobile: SUS301 is used for body structure components and exhaust pipes, achieving both lightweight and high strength.
• Transportation — Aerospace: Materials such as S20910 are used for engine parts and fasteners, meeting requirements for high strength and high-temperature resistance.

Contains chromium (12–18%) and carbon (0.1–1.2%). Common grades include 410 and 420.

Strength and hardness can be enhanced through heat treatment, good wear resistance, but relatively weak corrosion resistance, and magnetic.

• Medical Devices & Surgical Instruments: Scissors, forceps, surgical knives, etc., must meet requirements of high hardness and corrosion resistance.
• Industrial Cutting Tools & Mechanical Components: Food processing tools such as Z30Cr13 martensitic stainless steel, offering superior corrosion resistance to Cl⁻ compared to 420J2.
• Aerospace & Defense: Used for missile casings, engine parts, etc., meeting requirements for high strength and corrosion resistance.

Contains chromium (10.5–30%), low carbon content. Common grades include 430 and 446.

Excellent corrosion resistance, especially against stress corrosion; magnetic; medium strength; average welding performance.

• Automobile Industry — Exhaust Systems: Exhaust pipes, mufflers, etc., utilizing high-temperature oxidation resistance (up to 800°C) and low thermal expansion coefficient.
• Appliances & Kitchenware: Refrigerator door handles, microwave oven shells, etc., meeting durability and cleanliness requirements.
• Commercial Installation — Chemical Containers: Used for corrosion-resistant linings or pipelines. The S32803 grade performs exceptionally well in chemical reactors.

Contains chromium (18–28%), nickel (4.5–8%), and molybdenum (2.5–4%). Common grades include 2205 and 2507.

Combines the advantages of austenite and ferrite: high strength, excellent corrosion resistance, and strong resistance to stress corrosion and pitting corrosion.

• Petroleum & Natural Gas — Subsea Pipelines: Duplex stainless steel (e.g., S31803) is used for subsea pipelines, valves, and pump bodies. Its resistance to chloride stress corrosion cracking (Cl-SCC) is superior to austenitic stainless steel. Suitable for oil and gas extraction, storage, and transportation equipment.
• Chemical & Environmental Protection — Reactors & Heat Exchangers: Used in contact with acidic media (acetic acid, formic acid), with outstanding resistance to local corrosion. Also used in flue gas desulfurization systems resistant to sulfur and chloride ion environments.
• Ocean Engineering — Vessels & Propellers: Resistant to seawater corrosion, suitable for marine platform components and high-pressure pipelines for seawater desalination.
• Architecture & Energy — Nuclear Power: Used in key facilities such as nuclear power plant cooling systems, resistant to high-temperature oxidation and stress corrosion.