Grade: 420 (ASTM A240)
Thickness: 0.15 – 3.0mm (customizable)
Width: 600–1500mm (customizable)
Surface Finish: BA/2B/NO.1/NO.4/4K/HL/8K/EMBOSSED or according to customer requirementg,etc.
Tensile Strength: ≥655 MPa
Elongation: ≥24%
| Параметры | Детали |
|---|---|
| Марка стали | 420 (ASTM A240/UNS S42000) |
| Диапазон толщины | 0,15 – 3 мм (настраиваемый) |
| Диапазон ширины | 600 mm – 1500 mm (customizable) |
| Отделка поверхности | BA/2B/NO.1/NO.4/4K/HL/8K/EMBOSSED или в соответствии с требованиями клиента и т.д. |
| Предел прочности при растяжении | ≥ 655 MPa (min) |
| Относительное удлинение | ≥25% |
| Предел текучести | ≥ 345 MPa (min) |
| Химический состав | Chromium (Cr): 12.0% – 14.0%; Manganese (Mn): ≤ 1%; Silicon (Si): ≤ 1%; |
Classification of 420 Stainless Steel Coil
420 stainless steel coil mainly includes several variants such as 420J1 stainless steel and 420J2 stainless steel, which are widely used martensitic stainless steels. These grades differ primarily in their carbon content, hardness, and wear resistance.
Depending on chemical composition, surface finish, and manufacturing specifications, 420 stainless steel coils can be classified into different categories. Understanding these classifications helps buyers select the most suitable material for their applications.
Composition of 420 Stainless Steel Coil
The main chemical components of 420 stainless steel coil include chromium (Cr), carbon (C), iron (Fe), silicon (Si), manganese (Mn), and phosphorus (P). These elements determine the hardness, corrosion resistance, and mechanical strength of the material.
420 stainless steel is known for its high hardness after heat treatment, making it suitable for applications requiring wear resistance and moderate corrosion resistance.
- 420 J1 Stainless Steel Coil
420J1 stainless steel coil contains lower carbon content (around 0.15–0.25%) and 12–14% chromium. Due to its lower carbon level, it provides better corrosion resistance and toughness, but the hardness after heat treatment is slightly lower than that of 420J2.
This grade is commonly used in cutlery, surgical instruments, and precision components.
- 420 J2 Stainless Steel Coil
420J2 stainless steel coil contains higher carbon content (around 0.26–0.40%), which significantly increases its hardness and wear resistance after heat treatment.
Because of its improved hardness, 420J2 is widely used for knives, scissors, industrial blades, and mechanical parts that require strong edge retention.
Surface of 420 Stainless Steel Coil
The surface finish of 420 stainless steel coil plays an important role in appearance, corrosion resistance, and application suitability.
- 420 Stainless Steel Coil BA Surface: The BA (Bright Annealed) finish is obtained through bright annealing in a controlled atmosphere. It produces a smooth, reflective surface, making it suitable for decorative and precision applications.
- 420 Stainless Steel Coil 2B Surface: The 2B finish is one of the most widely used finishes for stainless steel coils. It is produced through cold rolling, heat treatment, and pickling, resulting in a smooth and moderately reflective surface that is suitable for industrial processing.
- 420 Stainless Steel Coil No.1 Surface: The No.1 surface finish is produced by hot rolling followed by annealing and pickling. It has a rougher matte appearance and is commonly used in industrial applications where surface aesthetics are less important.
- 420 Stainless Steel Coil HL Surface: HL (Hairline) finish features continuous fine polishing lines on the surface. This finish is commonly used for decorative panels, elevator interiors, and architectural applications.
- 420 Stainless Steel Coil Dull Surface: The Dull finish has a low-gloss matte appearance, providing a subtle texture suitable for industrial and architectural uses where reflections are undesirable.
Size of 420 Stainless Steel Coil
420 stainless steel coils are produced in both standard and customized sizes to meet various industrial requirements. The thickness, width, and coil weight directly affect pricing and manufacturing processes.
Before production or shipment, measurements are strictly controlled to ensure compliance with specified tolerances.
Thickness of 420 Stainless Steel Coil
These thicknesses are widely used for precision components, industrial blades, and structural applications:
-
-
0.2 – 1mm
-
2 мм
-
3 мм
-
5 мм
-
6 мм
-
8 мм
-
10 мм
-
Width of 420 Stainless Steel Coil
Most customers seeking 420 stainless steel coil will typically find standard widths available. However, there are custom orders for specific applications. The requested width should not deviate too much from the standard measurements. Below are the most common coil widths:
-
-
1000 мм
-
1220 мм
-
1500 мм
-
1550 мм
-
Length of 420 Stainless Steel Coil
-
-
1000 мм
-
2000 мм
-
2440 мм
- 3000mm
-
6000 мм
-
Weight of 420 Stainless Steel Coil
Вес катушки рассчитывается на основе точных измерений ее длины, ширины и толщины:
Вес (кг) = Ширина (м) × Длина (м) × Толщина (мм) × 7,93 (г/мм³)
Applications of 420 Stainless Steel Coil in Interior Design:
Due to its beautiful appearance and easy cleaning properties, 420 cold-rolled stainless steel coils are also commonly used in construction and decoration fields, such as indoor and outdoor decorative panels, handrails, railings, etc.
Applications of 420 Stainless Steel Coil in Knife Manufacturing:
Because the 420 cold-rolled stainless steel coil has good wear resistance and corrosion resistance, it is often used in knife manufacturing, including kitchen knives, surgical blades, etc.
Applications of 420 Stainless Steel Coil in Industrial Equipment Manufacturing:
In the industrial field, 420 cold-rolled stainless steel coils are often used to manufacture parts and mechanical components, such as valves, pump bodies, bearings, bolts, etc.
Automobile Industry: Stainless steel is increasingly used in automobile manufacturing. 420 cold-rolled stainless steel coils are often used in the manufacture of automobile exhaust systems, exhaust pipes, exhaust manifolds, and other components to improve their corrosion resistance and wear resistance.
Applications of 420 Stainless Steel Coil in the Chemical Industry:
In the chemical industry, 420 cold-rolled stainless steel coils are often used to manufacture storage tanks, pipelines, reactors, and other equipment to cope with harsh working environments and corrosive media.
| Параметры сравнения | Серия 200 (201) | Серия 300 (304 как представитель) | Серия 400 (430 как представитель) |
|---|---|---|---|
| Химический состав | Хром (Cr) 16% – 18%, марганец (Mn) 5.5% – 7.5%, никель (Ni) 3.5% – 5.5%, азот (N) ≤0.25% | Хром (Cr) 18% – 20%, никель (Ni) 8% – 10.5%, низкое содержание углерода | Хром (Cr) 16% – 18%, низкое содержание углерода, ферритная структура |
| Предел прочности при растяжении (MPa) | ≥520 | ≥515 | ≥450 |
| Относительное удлинение (%) | ≥40 | ≥40 | ≥22 |
| Коррозионная стойкость | Умеренная стойкость к коррозии, подходит для менее агрессивных сред. Более подвержена ржавчине во влажных и коррозионных условиях по сравнению с серией 300. | Хорошая общая коррозионная стойкость, подходит для атмосферы, пресной воды и других условий. Относительно слабая устойчивость к ионам хлора. | Удовлетворительная стойкость к коррозии, выше чем у углеродистой стали, но ниже чем у серии 300. Склонна к питтинговой коррозии в средах с высоким содержанием хлоридов. |
| Магнитные свойства | Слабо магнитная из-за состава сплава | Немагнитная в отожжённом состоянии, может стать слабо магнитной после определённой обработки | Магнитная |
| Стоимость | Относительно низкая, благодаря меньшему содержанию никеля и более простой структуре | Средняя, так как это наиболее распространённая и надёжная марка | Относительно низкая, аналогично серии 200 по цене, но с другими характеристиками |
| Области применения | Внутренняя отделка, кухонная посуда низкого класса, некоторые декоративные профили в строительстве при невысоких требованиях к коррозионной стойкости | Кухонная утварь, строительная отделка, общие промышленные компоненты и другие повседневные области | Корпуса бытовой техники, автомобильная отделка, часть оборудования для пищевой промышленности, где не требуется немагнитность и достаточно умеренной коррозионной стойкости |
Why Choose Our 420 Stainless Steel Coil?
-
Superior Quality Assurance: Our 420 stainless steel coil is manufactured under strict quality control procedures. From raw material selection to rolling, annealing, and final inspection, every step follows international standards such as ASTM and JIS. This ensures stable chemical composition, reliable hardness after heat treatment, and consistent performance for industrial applications.
-
Customization Options: We understand that different industries require different specifications. Our 420 stainless steel coils can be customized in terms of thickness, width, hardness condition, and surface finish (including 2B, BA, No.4, and HL). Whether you need coil, strip, or cut sheets, we can supply materials tailored to your production needs.
- Excellent Hardness and Wear Resistance: 420 stainless steel is a martensitic stainless steel known for its high hardness after heat treatment. Grades such as 420J1 and 420J2 offer excellent wear resistance and edge retention, making them ideal for applications such as industrial blades, knives, scissors, surgical instruments, and precision mechanical components.
-
Competitive Pricing: With efficient production lines and stable raw material sourcing, we are able to supply high-quality 420 stainless steel coils at competitive factory prices, helping customers reduce procurement costs while maintaining reliable material performance.
-
Expert Technical Support: Our experienced technical team can provide guidance on grade selection, heat treatment conditions, and fabrication processes. Whether you need assistance choosing between 420J1 and 420J2, or require recommendations for specific applications, we are ready to support your project.
Свяжитесь с нами
Ready to source high-quality 420 stainless steel coil for your next project?Contact our team today for technical consultation, pricing, and customized solutions.