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.
This is the most cost effective grade of steel. So the 420 Stainless Steel perforated plate 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 perforated plate 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
| Thickness |
0.1mm-12mm |
| Width |
1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length |
Customized |
| Surface |
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
| Finish |
Hot rolled coil (HR), Cold rolled coil (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form |
Round hole, square hole, diamond hole, hexagonal hole, waist round hole, rectangular hole, triangular hole, pattern hole, non-standard hole, large and small holes, gradient hole, cross hole, plum blossom hole |
Composition content
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
| 420 |
Min.
Max. |
0.16~0.25 |
≤1.00 |
≤1.00 |
≤0.04 |
≤0.03 |
12.0~14.0 |
/ |
≤0.75 |
420 stainless steel perforated plate mechanical properties
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
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.
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