| Type: | Stainless Steel Coils |
|---|---|
| Standard: | AISI |
| Grade: | 400 Series |
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420 Stainless Steel Sheet Coil AMS 5506, ASTM A240420 Stainless Steel Sheet Coil AMS 5506, ASTM A240 overview
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.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 420 | S42000 | 420S37 | 56C | 1.4021 | X20Cr13 | 2303 | SUS 420J1 |
PRODUCT FORMS:
Coil , Sheet, plate , Strip .wire ,- Profile, Round, Flat, Square tube ,Pipes
Specififcation:
Possible alternative grades of grade 420 stainless steels
| Grade | Reasons for choosing grade 420 |
| 410 | Only a lower hardened strength is needed. |
| 416 | High machinability is required, and the lower hardened strength and lower corrosion resistance of 416 is acceptable. |
| 440C | A higher hardened strength or hardness than can be obtained from 420 is needed. |
| "Specials" | Variations of 420 are available to special order. These offer higher hardness, corrosion resistance and machinability for particular applications. |
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ASTM | JIS | AISI | EN |
| Grade | S30100 | SUS301 | 301 | 1.431 |
| S30400 | SUS304 | 304 | 1.4301 | |
| S30403 | - | 304L | 1.4307 | |
| S31008 | SUS310S | 310S | 1.4845 | |
| S31603 | - | 316L | 1.4404 | |
| S32100 | SUS321 | 321 | 1.4541 | |
| S41008 | SUS410S | 410S | - | |
| S43000 | SUS430 | 430 | 1.4016 | |
| S43932 | - | - | 1.451 | |
| S44400 | SUS444 | 444 | 1.4521 | |
| S44500 | SUS430J1L | - | - |
Dimension Ranges:
|
Width
|
Thickness | Inner Diameter | Steel Grade | Surface Finish |
| 610~2030 mm | 0.15~3.0 mm | 610 or 508 +0/-5 mm | 201; 254 SMO; 301; 301 AL; 301Si; 302; 303; 303 SE; 304; 304 L; 304 LV; 304 V; 3049; 305;30512; 308; 309; 309 S; 309 SCB; 310; 310 S; 316; 316 L; 316 LN; 316 Ti; 317; 317 L; 321; 330; 347; 384; 405; 409; 410; 410 S; 414;416; 416 SE; 420; 420 A; 420 HC; 420 LC; 420 MO; 430; 430Li; 434; 436; 439; 440 A; 440 C; 441; 442; 444; 446; 18 SR1;Carpenter 20,CB32; Carpenter 4552; Custom 450; 18-9LW1; 19-90L4; Greek Ascology;; AL-6XN4; 904L; Duplex 2205; Duplex 2304; Duplex 2507,Nickel alloys , Titanium and Ti alloys | 2B, 2D, BA, No.3, No.4, No.5, SB, HL |
| 610~2030 mm | 2.5mm~10 mm | 610 or 508 +0/-5 mm | No.1 or As requied |
Striping processing, commonly known as "slitting ", refers to the winding of a metal coil by unwinding, slitting, leveling, winding, and processing into a desired width. Slitting processing is a basic metal processing technology that combines high-quality equipment with skilled craftsmanship. it can be obtained with strict tolerance, perfect surface control , safe packaging as well as fine transportation.
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