Alloy 316/316L Austenitic Stainless Steel Plate

Alloy 316/316L is an austenitic stainless steel plate that offers excellent corrosion resistance in a variety of corrosive environments. This alloy is a popular choice for applications in industries such as chemical processing, food processing, and pharmaceuticals.

One of the notable features of this alloy is its low carbon content, which makes it ideal for welding and reduces the risk of carbide precipitation. The addition of molybdenum to the alloy also enhances its resistance to pitting and crevice corrosion, which are common in chloride-containing environments.

Alloy 316/316L is also highly resistant to oxidation and can withstand high temperatures without losing its corrosion resistance properties. This makes it a reliable choice for use in high-temperature applications such as furnace parts and heat exchangers.

In addition to its excellent corrosion resistance and high-temperature capabilities, alloy 316/316L is also easy to fabricate and has good formability. This makes it a versatile material that can be used in a wide range of applications.

Specifications

1. Chemical Composition: The chemical composition of Alloy 316/316L consists of 16-18% chromium, 10-14% nickel, 2-3% molybdenum, and less than 0.08% carbon.

2. Mechanical Properties: This alloy is known for its high strength and toughness. The minimum tensile strength of Alloy 316/316L is 70 ksi (485 MPa) and the minimum yield strength is 25 ksi (170 MPa).

3. Corrosion Resistance: Alloy 316/316L is highly resistant to corrosion in a variety of environments, including acidic, alkaline, and chloride-rich conditions. It is commonly used in marine, chemical, and petrochemical applications.

4. Heat Resistance: Alloy 316/316L offers good heat resistance and can be used in high-temperature applications up to 1700°F (927°C).

5. Weldability: This alloy can be easily welded using a variety of methods, including gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and shielded metal arc welding (SMAW).

TOLERANCES

Chemical Elements

• Chromium (Cr): 16% - 18%
• Nickel (Ni): 10% - 14%
• Molybdenum (Mo): 2% - 3%
• Silicon (Si): 0.75% max
• Manganese (Mn): 2% max
• Carbon (C): 0.03% max
• Phosphorus (P): 0.045% max
• Sulphur (S): 0.03% max

MECHANICAL PROPERTIES

1. High tensile strength: The tensile strength of Alloy 316/316L is around 515 MPa at room temperature, which makes it suitable for applications that require high strength and toughness.

2. Good ductility: This alloy has excellent ductility and can be easily formed and welded. It has a minimum elongation of 40% and a minimum reduction of area of 50%.

3. Corrosion resistance: Alloy 316/316L is highly resistant to corrosion in a variety of environments, especially in acidic, chloride-containing, and marine conditions.

4. High-temperature strength: This alloy retains its strength and toughness at elevated temperatures up to 870°C, making it suitable for high-temperature applications.

5. Low magnetic permeability: Alloy 316/316L has a low magnetic permeability, making it suitable for use in non-magnetic applications.

APPLICATIONS

• Chemical and Petrochemical Processing
• Food Processing:
• Medical Devices
• Marine Applications
• Architecture

MACHINEABILITY AND WELDABILITY

Machineability Features:
1. Alloy 316/316L is easily machinable, which means it can be cut, shaped, or drilled without any difficulties.
2. It has a low work hardening rate, thus reducing the risk of cracking and distortion during machining.
3. Its composition of molybdenum provides increased resistance to pitting corrosion and crevice corrosion, ultimately reducing the risk of workpiece damage during machining.
4. Alloy 316/316L is also easily welded, which means it can be joined with other metals to produce stronger structures.

Weldability Features:
1. Alloy 316/316L can be easily welded using a wide variety of welding techniques, including TIG, MIG, and Arc welding.
2. The presence of molybdenum in the alloy allows it to withstand higher temperatures, making it easier to weld without any distortion or cracking.
3. It also has a low carbon content, which prevents carbide precipitation and sensitization during welding, thereby improving the weld's corrosion resistance properties.
4. Alloy 316/316L can withstand exposure to harsh chemicals and environments without any significant loss of its structural integrity.

HEAT TREATING

1. Improved Corrosion Resistance: Heat treating Alloy 316/316L can significantly improve its corrosion resistance properties, making it suitable for use in harsh environments such as marine and chemical processing industries.

2. Improved Strength and Hardness: Heat treating can also improve the strength and hardness of Alloy 316/316L, providing better wear resistance and fatigue strength.

3. Increased Ductility: Heat treating can increase the ductility of Alloy 316/316L, making it easier to form and bend without cracking or breaking.

4. Consistent Mechanical Properties: With proper heat treatment, Alloy 316/316L austenitic stainless steel plate can maintain consistent mechanical properties throughout the bulk of the material, ensuring uniform performance.

5. Enhanced Weldability: Heat treating can also improve the weldability of Alloy 316/316L, making it easier to join and fabricate using common welding techniques.

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