420 stainless steel is a type of martensitic stainless steel, which is widely used in various industries due to its excellent corrosion resistance, hardness, and wear resistance. It is a high-carbon steel alloy that contains chromium as the main alloying element, providing good corrosion resistance. In addition, the addition of other elements such as molybdenum and vanadium can further enhance its mechanical properties and corrosion resistance.
Equivalent Material
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
420 | Min. Max. |
0.16~0.25 | ≤1.00% | ≤1.00% | ≤0.040% | ≤0.030% | 12.00~14.00% | / | ≤0.75% | / |
Standard Specification
Thickness | 3mm-10mm | ||||||
Width | 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc. | ||||||
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
Finish | Hot rolled flat steel(HR), Cold rolled flat steel(CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
Composition Content
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
430 | Min. Max. |
≤0.12% | ≤1.00% | ≤0.75% | ≤0.040% | ≤0.030% | 16.00~18.00% | / | ≤0.60% | / |
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 flat steel Price List | 420 flat steel FOB Per Unit (USD) | |||||||
420 stainless steel flat steel | $1200.00-$1800.00 | |||||||
420 mirror stainless steel flat steel | $1500.00-$2000.00 | |||||||
Stainless Steel flat steel 420 | $1200.00-$1800.00 | |||||||
5mm thick stainless steel flat steel | $1200.00-$1800.00 |