420 stainless steel plate, high hardness, high strength, processing and cutting, bright and smooth surface
| Grade | C | Mn | Si | P | S | Cr |
| 420 | min. max. | 0.15 - | - 1 | - 1 | - 0.040 | - 0.03 | 12.0 14.0 |
Introduction
Grade 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420 can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium.
Stainless steel grades that are similar to grade 420 stainless steels include martensitic steels such as the other versions of grade 420, having vanadium, sulphur and molybdenum in their composition, and the grade 440 series. Non-standard grade 420C has carbon content that is little higher than that of grade 420.
Martensitic stainless steels are ones with high hardness and high carbon content. These steels are generally fabricated using methods that require hardening and tempering treatments. The operating conditions of martensitic steels are affected by loss of material’s strength at high temperatures, and decrease in ductility at negative temperatures.
1. Material: 420 stainless steel plate
2. Standard: ASTM, AISI, JIS, DIN, GB
3.Cold rolled stainless steel plate
Thickness : 0.3mm-3.0mm
Width : 1000mm/1219mm/1500mm
Length : 2000mm/2438mm/4000mm/6000mm or cutting randomly
Model size : 0.3mm-3.0mm(TK)*1000mm(W)*2000mm(L)
0.3mm-3.0mm(TK)*1219mm(W)*2438mm(L)
0.3mm-3.0mm(TK)*1500mm(W)*4000mm(L)
Surface : 2B, BA, 8K, HL, 2D, Golden 8K, Black 8K etc.
4.Hot rolled stainless steel plate
Thickness : 3.0mm-300mm
Width : 1219mm/1500mm/1800mm/2000mm
Length : 2000mm/2438mm/4000mm/6000mm or cutting randomly
Model size : 3.0mm-120mm(TK)*1219mm(W)*2438mm(L)
3.0mm-120mm(TK )*1500mm(W)*6000mm(L)
3.0mm-120mm(TK) *1800mm(W)*6000mm(L)
3.0mm-120mm(TK) *2000mm(W)*6000mm(L)
Surface : No.1/No.4
6.Characteristics and application
| Surface finish | Characteristics and application |
| NO.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties,No2B could nearly satisfy comprehensive uses. |
| NO.3 | Polished with abrasive belt of git#100-#200, have better brightness with discontinuous
coarse stria, used as inner and external ornaments for building, electrical appliances and kitchen utensils etc. |
| NO.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous
coarse stria,but thinner than No3, are used as bathtub buildings inner and external
ornaments electrical appliances kitchen utensils and food processing equipment etc. |
| HL | Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous
streaks, mainly used as buildings ornaments elevators,door of building, frontal plate etc. |
| BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and
good reflexivity like mirror,kitchen apparatus,ornament etc. |
| 8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
7. Payment : Usually 30% of the amount by T/T as deposit , and the balance money shall be paid by T/T after got the faxed B/L.Or L/C at sight .
8. The application field:
a. Automotive:Automotive trim and molding /Exhaustsystem components, tubular manifolds, mufflers/Catalytic converter shells.
b. Construction:Gutters and downspouts, roofing, siding.
c. Kitchenware:Cooking utensils, dishwashers, ovens, range hoods, refrigerators.
d. Chemical processing: Oil refinery equipment, oil burner and heater parts.
e. Appliances:Hot water tanks, residential furnaces, escalator, doors.
f. Power generation:Heat Exchanger tubing.
