420 Stainless Steel Sheet Supplier

420 Stainless Steel Sheet

Grade: 420 (ASTM A240)

Thickness: 0.1mm~20mm or according to your request

Width: 10mm~2000mm or according to your request

Length: 100mm-12000mm or according to your request

Size: 800*1000mm, 800*2500mm, 1220*1250mm, or as required

Surface Finish: BA/2B/NO.1/NO.4/4K/HL/8K/EMBOSSED or according to customer requirementg,etc.

Упаковка: Согласно требованиям клиента и стандартная экспортная морская упаковка

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Параметры	Детали
Марка стали	420 (ASTM A240/UNS S42000)
Диапазон толщины	0.1mm~20mm or according to your request
Диапазон ширины	10mm~2000mm or according to your request
Отделка поверхности	2B, No.1, HL, No.4, 4K, 8K, BA, Пескоструйная обработка, Рифлёная
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%;

420 Stainless Steel Sheet – High Hardness Martensitic Steel by OrinoxSteel

420 stainless steel sheets are known for their excellent hardness, wear resistance, and strength after heat treatment, making them a preferred material for applications that require durable cutting edges and mechanical performance. With a chromium content of 12–14%, 420 stainless steel provides moderate corrosion resistance along with outstanding hardness compared with many other stainless grades.

Due to its martensitic microstructure, 420 stainless steel can be hardened through heat treatment, achieving high surface hardness and good edge retention. This makes it widely used for industrial blades, knives, surgical instruments, valve components, molds, and mechanical parts.

At OrinoxSteel, we supply reliable 420 stainless steel sheets with stable chemical composition and precise dimensional tolerances, helping manufacturers achieve consistent performance in demanding applications.

Types of 420 Stainless Steel Sheet

We supply two main variants of 420-grade stainless steel sheets:

• 420J1 Stainless Steel Sheet

420J1 contains lower carbon content (approximately 0.15–0.25%) and around 12–14% chromium, offering a good balance between corrosion resistance and toughness. Compared with 420J2, it provides slightly lower hardness but better ductility and machinability.

It is commonly used for:

precision instruments
surgical tools
industrial components
cutting tools requiring moderate hardness

• 420J2 Stainless Steel Sheet

420J2 contains higher carbon content (approximately 0.26–0.40%), allowing it to achieve higher hardness after heat treatment. This grade offers superior wear resistance and edge retention.

Typical applications include:

knives and scissors
industrial blades
cutting tools
molds and mechanical components

Standard Specifications – 420 Stainless Steel Sheet

We offer a wide range of dimensions and thicknesses to meet different industrial and manufacturing requirements. Sheets can be supplied in standard sizes or custom dimensions according to customer specifications.

Доступные толщины:

0,3 мм
0,5 мм
0,8 мм
1,0 мм
1,2 мм
1,5 мм
2,0 мм
3,0 мм
5,0 мм

Стандартные размеры листов:

800 × 1000 мм
800 × 2500 мм
1000 × 1030 мм
1220 × 1250 мм
1500 × 1550 мм

Индивидуальные размеры доступны по запросу.

How to Calculate the Weight of 420 Stainless Steel Sheet

To estimate the weight of a stainless steel sheet, use the following formula:

Weight (kg) = Width (m) × Length (m) × Thickness (mm) × 7.93

Where 7.93 represents the density of stainless steel (g/cm³).

Make sure to convert units correctly before calculating.

Example:

For a 1220 × 2440 mm sheet with 1 mm thickness:

Weight = 1.22 × 2.44 × 1 × 7.93 ≈ 23.6 kg

Applications of 420 Stainless Steel Sheet in Knife and Blade Manufacturing

Due to its high hardness and excellent wear resistance after heat treatment, 420 stainless steel sheet is widely used in knife and blade manufacturing. It provides good edge retention and durability, making it suitable for products such as:

kitchen knives
industrial blades
scissors
surgical blades
cutting tools

Grades such as 420J1 and 420J2 are particularly popular in this industry.

Applications of 420 Stainless Steel Sheet in Surgical and Medical Instruments

420 stainless steel is commonly used for medical and surgical instruments because it can achieve high hardness while maintaining moderate corrosion resistance. Typical applications include:

surgical scissors
forceps
dental tools
precision medical instruments

The material can be polished to a smooth surface that is easy to clean and sterilize.

Applications of 420 Stainless Steel Sheet in Industrial Equipment Manufacturing

In industrial manufacturing, 420 stainless steel sheet is used to produce wear-resistant mechanical parts. After heat treatment, the material provides excellent strength and hardness for demanding environments.

Typical components include:

valve parts
pump shafts
mechanical components
industrial cutting tools
molds and dies

Applications of 420 Stainless Steel Sheet in Mold and Tooling Industry

Because of its good hardenability and wear resistance, 420 stainless steel is frequently used in plastic molds and tooling applications. Its polished surface and durability make it suitable for precision mold components used in manufacturing industries.

Applications of 420 Stainless Steel Sheet in Decorative and Structural Components

Although 420 stainless steel is mainly used for mechanical applications, it can also be used in decorative and structural components where both strength and a polished surface are required.

Typical examples include:

decorative hardware
industrial panels
mechanical housings
precision structural parts

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 Sheet?

Strict Quality Control: Every 420 stainless steel sheet we supply undergoes comprehensive quality inspections — from raw material selection to rolling, annealing, and final inspection. Our manufacturing process follows international standards to ensure stable chemical composition, precise dimensions, and reliable performance after heat treatment.

Tailored Specifications: We provide flexible customization options including sheet thickness, dimensions, and surface finishes such as 2B, BA, and No.4. Whether you require sheets for blade manufacturing, industrial components, or precision tools, we can supply materials that match your exact technical requirements.

High Hardness and Wear Resistance: 420 stainless steel is a martensitic stainless steel known for its excellent hardness after heat treatment. Grades such as 420J1 and 420J2 offer strong wear resistance and good edge retention, making them widely used in knives, surgical instruments, industrial blades, molds, and mechanical parts.

Professional Technical Support: Our experienced technical team can assist you with grade selection, heat treatment guidance, machining recommendations, and surface finishing options, helping you maximize the performance of your 420 stainless steel sheet in demanding applications.

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