Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
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Corrosion resistant F22 stainless steel rod f53 stainless steel round rod polished rod
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Product Description
F22 is a high-performance low-alloy steel with high strength and hardness, suitable for the oil, gas and chemical industries.
The chemical composition of F22 includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), molybdenum (Mo) and iron (Fe), of which the chromium content is about 2.25%. These ingredients give F22 good mechanical properties and corrosion resistance.
Chemical composition
The chemical composition of F22 is as follows:
Carbon (C): 0.05% - 0.15%
Silicon (Si): 0.50% maximum
Manganese (Mn): 0.30% - 0.60%
Phosphorus (P): 0.040% maximum
Sulfur (S): 0.040% maximum
Chromium (Cr): 2.00% - 2.50%
Molybdenum (Mo): 0.87% - 1.13%
Iron (Fe): Balance
| C | Si | Mn | P | S | Cr | Mo | Fe |
| 0.05% - 0.15% | 0.50% maximum | 0.30% - 0.60% | 0.040% maximum | 0.040% maximum | 2.00% - 2.50% | 0.87% - 1.13% | Balance |
F22 is a low alloy steel with the UNS number K21590, containing approximately 2.25% chromium. This material is widely used in the oil and gas industry and other applications requiring high hardness and corrosion resistance due to its excellent strength and hardness characteristics.
Mechanical properties
Physical properties
The physical properties of F22 include:
· Density: about 7.85 g/cm³
· Melting point: about 1480 - 1540 °C
· Thermal expansion coefficient: about 11.5 - 12.5 µm/m·K
· Thermal conductivity: about 30 - 35 W/m·K
· Specific heat capacity: about 450 - 480 J/kg·K
These physical properties make F22 have good application potential in high temperature and heat conduction.
V. Heat treatment process
F22 materials usually undergo the following heat treatment processes:
· Normalizing: holding temperature 900 ~ 980 ℃, holding time 5 ~ 7 hours, so that the material is austenitized inside, and water-cooled to below 150 ℃ on the surface after being taken out of the furnace.
· Quenching: holding temperature 900 ~ 970 ℃, holding time 5 ~ 7 hours, water-cooled to below 80 ℃ on the surface after being taken out of the furnace.
· Tempering: holding temperature 700-740℃, holding time 5.5-8 hours, air cooling to room temperature after leaving the furnace.
These heat treatment processes can be adjusted according to specific application requirements to obtain the best material properties.
The mechanical properties of F22 depend on its heat treatment process, usually normalized, quenched and tempered to achieve different strength levels:
Hardness 75 KSI: Tensile strength minimum 95 KSI (655 N/mm²), 0.2% yield strength minimum 75 KSI (517 N/mm²), elongation 18%, section reduction rate 35%
Hardness 105 KSI: Tensile strength minimum 125 KSI (862 N/mm²), 0.2% yield strength minimum 105 KSI (724 N/mm²), elongation 15%, cross-sectional shrinkage 30%
Application areas
F22 is widely used in the following fields due to its excellent strength, toughness and corrosion resistance:
Petrochemical industry: used to manufacture oil pipelines, chemical equipment, high-temperature steam pipelines, etc.
Marine engineering: used to manufacture pipelines, valves and connectors for offshore platforms
Aerospace: used to manufacture parts working in high temperature environments
Automobile manufacturing: used to manufacture engine parts, transmission systems, etc.
Large machinery: used to manufacture mold parts and large parts of various complex shapes
Frequently Asked Questions:
Q: What is the model of this stainless steel bar?
A: The models of this stainless steel bar are 304, 316, 304L and 316L 201.
Q: Where is this stainless steel bar made?
A: This stainless steel bar is made in China.
Q: What sizes are available for this stainless steel bar?
A: This stainless steel bar is available in a variety of sizes.
Q: Is this stainless steel bar corrosion-resistant?
A: Yes, this stainless steel bar is corrosion-resistant.