A2-70 Stainless Steel Bolt: Comprehensive Specifications and Pricing Guide
When it comes to selecting the right fasteners for your project, understanding the specifications and pricing of A2 70 stainless…
Imagine a material that stands up to the harshest environments, resists the relentless assault of corrosion, and maintains its strength and integrity under immense pressure. This isn’t a fantasy—it’s A4-80 stainless steel. Known for its remarkable tensile strength and exceptional resistance to corrosion, A4-80 stainless steel is a crucial component in industries where reliability and durability are non-negotiable. From the depths of the ocean in marine engineering to the towering heights of construction projects, this alloy plays a vital role in ensuring safety and performance.
In this article, we’ll delve into the unique chemical and mechanical properties that make A4-80 stainless steel a standout choice. We’ll explore the manufacturing processes that enhance its capabilities and examine its widespread applications across various industries. Whether you’re an engineer seeking the perfect material for a challenging project or a procurement manager looking for reliable fasteners, you’ll find valuable insights into why A4-80 stainless steel is a top contender in demanding environments. Join us as we uncover the strength, versatility, and myriad uses of this exceptional alloy.
A4-80 stainless steel is a high-strength alloy known for its exceptional corrosion resistance and durability. This grade of stainless steel belongs to the austenitic family, which maintains its structure at all temperatures, offering significant benefits in toughness and formability.
A4-80 stainless steel is essential in various industries due to its outstanding qualities. Its high tensile strength, at least 800 MPa, makes it ideal for applications that require robust and reliable materials. Additionally, its superior resistance to corrosion, particularly in salty environments, guarantees long-lasting performance in tough conditions.
In the marine industry, A4-80 stainless steel is used for components such as fasteners, fittings, and propellers due to its ability to withstand seawater’s corrosive effects. This makes it ideal for marine use.
The oil and gas industry also heavily relies on A4-80 stainless steel, especially for fasteners and other critical parts in tough environments. Its strength and corrosion resistance are why it is widely used in this industry.
In construction, A4-80 stainless steel is favored for its strength and durability, making it suitable for extreme weather conditions. In chemical processing, its corrosion resistance extends the life of equipment and piping.
This unique blend of strength, corrosion resistance, and durability makes A4-80 stainless steel ideal for many demanding applications. Understanding these attributes helps in selecting the right material for specific industrial needs, ensuring optimal performance and longevity.
A4-80 stainless steel is a high-strength, austenitic grade known for its unique chemical composition and mechanical properties.
A4-80 stainless steel is renowned for its robust mechanical properties, achieved through specific manufacturing processes.
The "80" in A4-80 signifies a minimum ultimate tensile strength of 800 MPa, achieved through cold working. This high tensile strength makes the material suitable for demanding applications.
The material has a minimum yield strength of 600 MPa, crucial for high-stress applications where durability is essential.
With a minimum elongation of 30%, A4-80 stainless steel can stretch significantly before fracturing, which is a measure of its flexibility and toughness under tensile stress.
Cold working significantly increases the hardness, enhancing the material’s overall strength and wear resistance.
Cold working, such as cold drawing, enhances mechanical properties by increasing strength and hardness through dislocation movements within the crystal structure. This process refines the grain structure, further boosting the material’s performance.
A4-80 stainless steel offers:
These combined properties make A4-80 stainless steel an ideal choice for various high-performance applications, particularly where both strength and corrosion resistance are paramount.
A4-80 stainless steel is a high-strength, corrosion-resistant austenitic stainless steel derived from the 316 or 316L family. This material is known for its robustness and is widely used in demanding environments due to its impressive mechanical and chemical properties.
The chemical composition of A4-80 stainless steel includes a maximum of 0.08% carbon, up to 2.0% manganese, a maximum of 0.03% phosphorus, and a maximum of 0.045% sulfur. Other elements include up to 1.0% silicon, 16.0 to 18.5% chromium, 10.5 to 14.0% nickel, and 2.0 to 3.0% molybdenum, with optional nitrogen up to 0.22%, and the balance being iron. This precise composition ensures the material’s high performance in challenging conditions.
Cold working, performed at room temperature, is essential for enhancing the tensile and yield strengths of A4-80 stainless steel through strain hardening. This process increases the material’s strength by altering its microstructure, making it suitable for applications where high mechanical performance is crucial.
Solution annealing involves heating the material to 1010-1120°C and rapidly cooling it to dissolve precipitated phases and ensure a uniform austenitic structure. This treatment prepares the material for further processing by restoring its ductility and eliminating internal stresses.
Hot forging, used for specific applications, shapes the metal at high temperatures, allowing for the creation of complex shapes and sizes ranging from M6 to M48. Although hot forging may slightly reduce tensile strength, using cold-worked raw material ensures the fasteners retain sufficient strength for their intended uses.
Rigorous quality control, including chemical composition and mechanical property testing, ensures A4-80 stainless steel meets specifications. Non-destructive testing methods, such as ultrasonic techniques, are employed to detect any internal defects, guaranteeing the material’s reliability and performance.
By combining solution annealing, cold working, and optional hot forging, A4-80 stainless steel achieves high tensile strength, excellent corrosion resistance, and durability, making it ideal for a wide range of industrial applications.
A4-80 stainless steel is widely used in the marine industry due to its high resistance to corrosion and excellent tensile strength. Components like fasteners, fittings, and propellers benefit from its ability to withstand the harsh, corrosive environment of seawater, thanks to the molybdenum in its composition that enhances resistance to pitting and crevice corrosion.
In the chemical processing industry, A4-80 stainless steel is prized for its excellent resistance to corrosive chemicals. This material is used in equipment and piping systems that need to handle aggressive chemicals. Its durability and resistance to high-temperature oxidation ensure long-term performance, reducing maintenance costs and downtime in chemical plants.
The oil and gas industry requires materials that can withstand extreme conditions, including high pressure, temperature, and corrosive environments. A4-80 stainless steel meets these requirements, making it suitable for critical components such as fasteners, valves, and piping systems. Its high tensile strength and corrosion resistance ensure the safety and longevity of these components, essential for offshore platforms and refineries.
Construction projects, especially those exposed to harsh weather conditions, benefit from the strength and durability of A4-80 stainless steel. This material is used in various structural elements, including fasteners, bolts, and support systems, providing the necessary robustness to withstand environmental stressors. Its resistance to rust and corrosion makes it ideal for building facades and other external applications where appearance and longevity are important.
The food production industry needs materials that maintain high hygiene standards and resist corrosion from cleaning agents and food products. A4-80 stainless steel is used in the manufacture of equipment, containers, and fasteners that must comply with stringent hygiene regulations. Its non-reactive nature and durability ensure food safety while maintaining the material’s integrity over time.
A4-80 stainless steel is used to make various fasteners essential for many industrial applications, including:
The unique combination of high tensile strength, excellent corrosion resistance, and durability makes A4-80 stainless steel an indispensable material across various industries, ensuring high performance and reliability in demanding conditions.
A4-80 stainless steel’s exceptional corrosion resistance comes from its unique chemical composition. Key elements include:
A4-80 stainless steel stands out for its resistance to chloride ions, making it perfect for marine applications. The molybdenum content also boosts its performance in chloride environments. Additionally, it exhibits strong oxidation resistance at high temperatures, up to 870°C in intermittent service and 925°C in continuous service. Compared to other austenitic stainless steels like A2 (304), A4-80 offers superior general corrosion resistance, making it ideal for various corrosive environments.
A4-80 stainless steel is ideal for fasteners, fittings, and propellers, thanks to its ability to withstand seawater corrosion. This ensures long-term durability and reliability for marine components.
In the chemical processing industry, A4-80 is used in equipment and piping systems that handle corrosive chemicals. Its robust corrosion resistance ensures longevity and reduces maintenance costs, making it a valuable material for aggressive chemical environments.
The oil and gas sector relies on A4-80 stainless steel for fasteners and critical components exposed to harsh conditions. Its high tensile strength and exceptional corrosion resistance are crucial for the safety and durability of offshore platforms and refineries.
A4-80 stainless steel is perfect for structural elements exposed to harsh weather conditions. Its strength, durability, and rust resistance make it ideal for building facades and other external applications.
Compared to A2 (304) stainless steel, A4-80 offers enhanced corrosion resistance and mechanical properties. The added molybdenum and higher nickel content make it the better choice for demanding applications.
A4-80 stainless steel fasteners are vital in many industries for their high strength and excellent corrosion resistance. These fasteners are supplied by numerous reputable companies worldwide, ensuring that industries have access to top-quality materials tailored to their needs.
Ranflex Metals is renowned for producing high-quality A4-80 stainless steel screws and bolts, emphasizing precision engineering and cost-effectiveness. This makes them a preferred choice for various industrial applications. The company offers a wide range of fasteners, ensuring that clients can find the exact specifications they require.
Located in China, Ningbo Teng Qi Fasteners specializes in A4-80 stainless steel fasteners, known for their precision engineering and compliance with international standards like ISO 4017 and DIN 933. Their extensive product range and focus on quality make them a reliable supplier in the global market.
Viha Steel & Forging, based in India, offers a wide range of A4-80 metric bolts, including various dimensions, head types, and drive types. They comply with multiple international standards, including ISO 4017, DIN 931, and ASTM, ensuring their products meet the stringent requirements of different industries.
Vision Alloy produces and exports A4-70 and A4-80 stainless steel hex bolts, catering to diverse industrial needs with a commitment to quality and international standards. Their extensive product range ensures their products are suitable for a variety of applications.
A4-80 stainless steel fasteners are manufactured in strict adherence to several international standards, ensuring their quality and reliability across various industries and regions. Key standards include ISO 4017, DIN 933, DIN 931, ASTM, ANSI, JIS, EN, and AS, which ensure global quality and performance criteria.
Manufacturers of A4-80 stainless steel fasteners implement rigorous quality control measures to ensure the highest standards. These measures include:
To source A4-80 stainless steel fasteners, contact reputable manufacturers and suppliers directly. Many suppliers offer comprehensive online catalogs and dedicated customer service teams to assist with product selection and inquiries. Additionally, industry trade shows and online marketplaces provide opportunities to connect with suppliers and explore the latest products and innovations in stainless steel fasteners.
Below are answers to some frequently asked questions:
A4-80 stainless steel is an austenitic stainless steel, primarily based on 316 or 316L material. Its chemical composition includes 16.0% to 18.5% chromium, 10.5% to 14.0% nickel, and 2.0% to 3.0% molybdenum. Additionally, it contains a maximum of 0.08% carbon, up to 2.0% manganese, a maximum of 0.03% phosphorus, up to 0.045% sulfur, up to 1.0% silicon, and may include up to 0.22% nitrogen.
The mechanical properties of A4-80 are enhanced through cold-working, resulting in a minimum ultimate tensile strength of 800 MPa, a minimum yield strength of 600 MPa, and a minimum elongation of 30%. These properties make A4-80 stainless steel highly durable and suitable for demanding applications.
A4-80 stainless steel differs from standard A4/316 stainless steel primarily in its mechanical properties and manufacturing process. A4-80 is cold-worked to achieve higher tensile strength (at least 800 MPa) and yield strength (at least 600 MPa), compared to the tensile strength of around 515 MPa and yield strength of 205 MPa for standard 316 stainless steel. This cold-working process enhances the material’s physical properties without altering its chemical composition, which remains similar to 316 stainless steel, containing iron, chromium, nickel, and molybdenum. Consequently, A4-80 is preferred in applications requiring high strength and excellent corrosion resistance, such as in marine, chemical processing, oil and gas, and construction industries.
A4-80 stainless steel is typically used in applications where high strength and excellent corrosion resistance are required. This includes the marine industry for components like fasteners, fittings, and propellers due to its resistance to seawater and other corrosive conditions. In the chemical processing industry, it is used for equipment and piping that must withstand corrosive chemicals. The oil and gas industry utilizes A4-80 for fasteners and components exposed to harsh environments, particularly in offshore and petrochemical applications. In construction, it is used for structural components and fasteners that need to endure harsh weather conditions. Additionally, A4-80 is common in manufacturing high-strength fasteners such as hex bolts, nuts, and eye bolts, and it is also suitable for high-temperature applications where thermal stability is crucial.
A4-80 stainless steel is commonly used in several critical industries due to its exceptional strength, corrosion resistance, and durability. These industries include the marine industry, where it is ideal for components exposed to seawater and corrosive marine environments; the chemical processing industry, which values its resistance to corrosive chemicals; the oil and gas industry, which utilizes it for fasteners and components in harsh environments; the construction industry, where it is used in structures exposed to harsh weather conditions; and the food production industry, which benefits from its cleanliness and ability to withstand various environmental conditions.
A4-80 stainless steel is manufactured through a combination of hot and cold working processes that enhance its properties. Initially, the raw materials are melted in an Electric Arc Furnace (EAF) and cast into semi-finished forms using continuous casting methods. The steel then undergoes hot forming processes such as hot rolling, where it is passed through rollers at temperatures above its recrystallization point to improve mechanical properties and grain structure. Hot forging may also be used to shape the steel and increase its strength.
The material is further enhanced through cold working processes. Techniques like drawing, rolling, and extruding distort the crystal grains, making the steel harder and stronger. For A4-80, this cold working is crucial as it achieves a minimum tensile strength of 800 MPa. Specific cold working methods include drawing the steel through progressively smaller dies to reduce its diameter and increase its length, and rolling and extruding to form rods, bars, and sheets. Cold forming techniques like thread rolling, heading, and bending are used to produce fasteners such as bolts and nuts.
Finally, A4-80 stainless steel undergoes solution annealing, where it is heated to 1010-1120°C and rapidly cooled to relieve stresses and achieve the desired microstructure. This comprehensive manufacturing process ensures that A4-80 stainless steel has the high strength, excellent corrosion resistance, and toughness needed for various applications.
If you are looking for suppliers or manufacturers of A4-80 stainless steel fasteners, you can consider the following reputable sources:
Ranflex Metals is a well-regarded manufacturer and supplier known for high-quality A4-80 stainless steel screws, bolts, and other fasteners. They are experienced in the steel fasteners market and offer competitive pricing.
Vision Alloys specializes in A4-80 stainless steel fasteners, including bolts and nuts, providing materials with exceptional strength, corrosion resistance, and durability.
Ningbo Teng Qi Fasteners, based in China, is a leading manufacturer of A4-80 stainless steel hex bolts, known for their precision engineering and commitment to quality.
Prosaic Steel, located in India, manufactures, supplies, and exports high-tensile fasteners, including A4-80 stainless steel hex bolts, adhering to international standards like DIN and ISO.
These companies are recognized for their expertise and quality in producing A4-80 stainless steel fasteners, making them reliable sources for your needs.
