Stainless Steel Bar 420

420 stainless steel is a kind of martensiform stainless steel, with certain wear resistance and corrosion resistance, higher hardness characteristics, suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation vehicles, household appliances, etc.

Mainly used in the manufacture of atmospheric, water vapor, water and oxidizing acid corrosion parts.

420 stainless steel is 420 "tool grade" martensitic steel, similar to Brinell high chromium steel, the earliest stainless steel.

420 has a certain wear resistance and corrosion resistance, high hardness, its price is a lower class of stainless steel ball, suitable for the general requirements of stainless steel working environment.

420 stainless steel is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation vehicles, household appliances, etc.

400 series stainless steel is an alloy of iron and carbon-chromium. This stainless steel has a martensitic structure and iron, so it has normal magnetic properties. 400 series stainless steel has strong resistance to high temperature oxidation, and compared with carbon steel, its physical and mechanical properties are further improved. Most 400 series stainless steels can be heat treated.

The commonly used 400 series stainless steel varieties include 430 type with 18% chromium and 410 and 420 types with 13% chromium, among which type 430 stainless steel is the most used. The 430 type stainless steel model is characterized by low price, low thermal expansion coefficient, and chloride stress corrosion resistance better than the 300 series stainless steel type; however, its disadvantage is that the formability, weldability and tensile strength are lower than that of the 304 type stainless steel model. , therefore, its field of use is limited. Under the same chromium content, in oxidizing media such as atmosphere, fresh water and nitric acid, the corrosion resistance of 400 series stainless steel is the same as that of 300 series stainless steel, and usually the corrosion resistance of 400 series stainless steel is better than that of 200 series stainless steel. . The addition of trace amounts of niobium, titanium, copper and aluminum to the 400 series stainless steel can improve its deep drawing performance, weldability, corrosion resistance and high temperature strength, and can partially replace the 304 type stainless steel model. At present, the 400 series stainless steel varieties after adding the above trace elements are SUS430LX, 430JIL, 444, 445M2, NSS447M1 and so on. In the United States and Japan, these models are widely used in automobile exhaust pipes (type 409 and 410L), washing machine drums (type 430), kitchen utensils, home appliances, medical equipment, water heaters, roof panels, curtain walls and power plant equipment.
This is the most cost effective grade of steel. So the 420 Stainless Steel Bar Price is lower compared to other grades of stainless steels and all metallic products in general. There are different versions of the material with low carbon and high carbon content. The low carbon version, 420 Bars are very good for welding applications as they have less carbide precipitation and less localized corrosion.

Equivalent Grades

Grade Euronorm China GB Japanese JIS
No.
420 1.4021 20Cr13 SUS420

Standard Specification

Section Round, Square, Hexagonal bar, oval, shaped
Diamater 0.254mm,1mm,10.0mm,25.4mm,50.8mm,76.2mm,101.6mm,127.0mm,152.4mm,300.0mm,600.0mm
Length Since the custom
Surface 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc
Finish Hot rolled Bar (HR), Cold rolled Bar (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Form   Bars, Foils, Rolls, Plain Bar, Shim Bar, Perforated Bar, Chequered Bar, Strip, Flats,
 Blank (Circle), Ring (Flange) etc.

Composition content

Grade C Mn Si P S Cr Mo Ni Ti
420 Min.
Max.
≤0.15 ≤1.00 ≤1.00 ≤0.040 ≤0.03 11.0~13.5 / / /
Tensile strength σ B (MPa) : quenching and tempering,≥635
Conditional yield strength σ0.2 (MPa) : quenching and tempering,≥440
Elongation Δ5 (%) : quenching and tempering,≥20
Section shrinkage ψ(%) : quenching and tempering,≥50
Impact work AKV (J) : quenching and tempering,≥63
Hardness: Annealing,≤223HB;
Quenching and tempering,≥192HB

Characteristic machining technology


1D -- The surface has discontinuous granular shape, also known as fog surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D - A slightly silvery white colour.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B -- Silver white with better gloss and flatness than a 2D surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
Ba - Excellent surface gloss, high reflectivity, like a mirror surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenching and tempering rolling.
No.3 -- Good gloss, coarse grain surface.
Processing technology: polishing and tempering rolling for 2D or 2B with 100~120 abrasive materials (JIS R6002).
No.4 -- Good gloss, fine lines on the surface.
Processing process: polishing and tempering rolling for 2D or 2B with 150~180 abrasive materials (JIS R6002).
HL -- Silver grey with hair streaks.
Processing technology: 2D products or 2B products with appropriate granularity of abrasive materials for polishing the surface is a continuous abrasive grain.
MIRRO -- Specular.
Processing technology: 2D products or 2B products with appropriate granularity of the grinding material grinding and polishing to the mirror effect.

Price List

Stainless Steel 420 bar Price List 420 bar FOB Shanghai Per Unit (USD)
420 stainless steel Round Bar $2000.00-$2200.00
420 mirror Stainless Steel Bar $2200.00-$2500.00
420 Stainless Steel Black Bar $2100.00-$2400.00
420 Stainless Steel Square Bar $2000.00-$2100.00

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