SUS420J2 Stainless Steel Sheet and Coil: Material and Processing for Shear Blade Blanks

SUS420J2: material and applications

SUS420J2 is a hardenable martensitic stainless steel that can be used as stock for industrial shearing-blade blanks made to drawings. The material supports subsequent fabrication and heat treatment, while a finished blade also has thickness, flatness, hole and cutting-edge requirements. Original sheet and a finished blade are different delivery stages.

Specify incoming condition and discuss tolerances and allowances against cutting, drilling and grinding operations. If the equipment encounters moisture, cleaning liquids or other media, assess material and finish against those conditions rather than relying on the stainless-steel name.

Material-category reference: https://www.nipponsteel.com/product/catalog_download/__icsFiles/afieldfile/2026/02/24/S008en_01_202504f.pdf

Typical Parts and Processing Flow

Industrial shearing-blade blanks can be cut to outline and hole locations before the treatment and grinding specified on the drawing. Select cutting method for the material condition, profile and finishing needs. Thermal cutting additionally requires assessment of the heated edge and its later treatment; different cutting methods should not be treated as having identical effects.

Carry out heat treatment to approved technical requirements and grinding to the thickness, flatness and cutting-edge dimensions. Inspect dimensions, treatment condition and assembly requirements on completed samples. Record original gauge and processing stages to assess remaining grinding allowance and conformity with the final drawing.

Purchasing Details and Rationale

When purchasing SUS420J2 sheet, provide blade outline drawings, hole positions, grinding allowance, and delivery stage (e.g., blank or semi-finished). Outline and holes determine blanking method and allowance allocation; grinding allowance affects subsequent processing efficiency and dimensional control; delivery stage clarifies responsibility. Also specify thickness, width, length and tolerances, surface quality requirements (e.g., acceptable scratches and pitting), and delivery condition. These details help suppliers plan production and reduce disputes. Purchasing documents may refer to dimension and condition options in the Gaozhen product catalog, but specific specifications must be confirmed with the supplier. For shear blades, flatness affects grinding setup and edge straightness, so an acceptable flatness range should be stated. Purchasing by grade alone without specifying condition and tolerances is not recommended, as batch-to-batch condition differences may affect processing.

FAQ: Can the Received Steel Plate Be Used Directly as a Blade?

No. The received SUS420J2 plate or coil is typically in blank condition and must undergo blanking, heat treatment, grinding, and dimensional inspection according to the blade drawing before use as a blade. Using unprocessed sheet directly cannot meet edge angle, hole position, and flatness requirements, and the material condition may not be suitable for direct shear loading. Purchasing should specify the delivery stage and confirm subsequent process responsibilities with the processor.

SUS420J2 dimensions and supply enquiry

The Gaozhen SUS420J2 product page lists these catalogue dimensions: Thickness range: 0.5~3.0 mm; Width range: 1000~1250 mm (including mill edges); Length range: ≤6000 mm (or coil). These values support specification discussions; confirm the required combination of gauge, width and condition for the material.

For stainless stock, discuss exposure, surface condition, cut dimensions and processing scope together. Define visible faces, mating surfaces and finishing requirements before confirming supply against the drawing.

Product details: View related product details

Products and processing enquiries at Jiangsu Gaozhen

Jiangsu Gaozhen Trading Co., Ltd. handles trading and processing coordination for steel sheet, coil and related metal materials. Customers can find a grade and discuss drawings, service conditions and manufacturing requirements.

The product range includes cold-rolled, hot-rolled, galvanized and other coated, pickled, spring-steel, carbon-steel and stainless sheet or coil, plus zinc-titanium / zinc-copper-titanium and copper-titanium alloys. For a mixed-material project, list SUS420J2 and other grades as separate items with their own specifications.

Product catalogue: https://gaozhenmetal.com/en/products/

Enquire about SUS420J2 at Jiangsu Gaozhen

For a SUS420J2 enquiry, prepare the following information so the business team can review supply and processing against the actual component.

Material and dimensions: SUS420J2, drawing revision or specified requirements, gauge and tolerance, width, and cut length for sheets.

Project conditions: service environment, surface and protection, welding or forming and later finishing.

Purchase plan: trial or batch requirement, quantity, delivery destination and requested timing.

Choose “Send enquiry” in the floating assistant, complete product, dimensions, quantity and contact details, confirm consent and submit. A receipt reference confirms that the form has been saved in Gaozhen’s website inbox. A chat message alone is not a submitted enquiry form.

Alternatively, contact Wang Dawei at +86 13861182855 or dawei5373@126.com. Mention this SUS420J2 article to help identify the product under discussion.

The business team confirms pricing, available specifications, stock and delivery against the enquiry.