| Product Information | |
| Name | Stainless Steel AISI 420 Flat Bars, Round Bars |
| Stocklist & Inventory Available: | Round bar Diameter ranges from 20 ~ 180mm |
| Material Specification: | ASTM,AISI,UNS,AMS,Werkstoffe,Miscellaneous |
| Equivalent Grade: | AMS5621,UNS S42000,ASTM A276,1.4021,AISI 420,X20Cr13 |
| Condition of delivery: | Hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering |
| Surface condition | Scaled (hot working finished)/ground/rough machining/fine machining |
| Product Shape available: | Round,Flat,Square,Hexagon,Plate,Sheet,Other |
| Customs HS code: | 72221100 / 72222000 / 72223000 |
| Third-party Inspection: | SGS, TUV, or CNAS |
| Material origin From: | P. R, China. |
| Terms of price: | Ex works, CIF, CFR. |
| Mode of transportation: | Sea Shipment, Air Cargo, or International Express. |
| Certification For Exportation: | Invoice, Packing list, Bill of lading, and Origin of Certificate. |
| Min.order quantity per batch: | 500 KG |
| Output Per Year: | 150,000 Ton |
| UT test standards: | ASTM E2375 / SAE AMS 2154 / EN 10228-3. |
| Meltling Process Route: | BEF + ESR / EAF + LF + VD + ESR |
| Standard Export Packing Way: | Wooden box, wooden tray with free from fumigation. |
| Terms of payment: | 30% Deposit, balance before shipment. |
| Production Lead Time: | Within 15 days after PO |
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Description
Chemical Composition
Mechanical Properties
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►GENERAL CHARACTERISTICS OF STAINLESS STEEL Stainless Steel 420This is another basic hardenable stainless steel, with higher strength, hardness and wear resistance than type 410.APPLICATIONS OF STAINLESS STEEL 420 This alloy is used for cutlery and surgical instruments, scissors etc., valves, gears, shafts, cams, pivots etc. It may also be used at moderately elevated temperatures for valve parts, springs. It should not be used at sub-zero temperatures where heavy stresses are involved. FORGING STAINLESS STEEL 420 Preheat to 1400/1500ºF (760/815ºC), then heat to 2000/2200ºF (1100/1205ºC) and forge. Ideally forgings should be cooled in a furnace held at 1550ºF (845ºC), but if this is not possible in warm dry lime or ashes. Air cooling after forging may cause cracking. Anneal after forging, but cool to room temperature before annealing. Do not forge below 1650ºF (900ºC). HEAT TREATMENT ANNEALING For maximum softness heat to 1550/1650ºF (840/900ºC) and cool slowly in furnace, to give an approximate hardness of 179 BHN. As an intermediate or process anneal, heat to 1350/1450ºF (730/790ºC) and furnace or air cool to give an approximate hardness of 196 BHN. HARDENING Heat to 1850/1950ºF (1010/1065ºC) and quench in warm oil. TEMPERING For maximum hardness and corrosion resistance, tempering should be carried out between 300/400ºF (150/205ºC) followed by air cooling. This will give a hardness of approximately Rc 52. To ensure maximum corrosion resistance, this alloy should not be tempered over 800ºF (430ºC). MACHINABILITY Because of its higher carbon content, type 420 machines somewhat like a high-carbon tool steel, giving tough, stringy chips. Easier machining, if machinability is of prime importance, will be obtained from the free-machining type 420, but at the expense of certain other properties. WELDABILITY This air-hardening grade is seldom welded. Satisfactory welds might be obtained by preheating to 300/400ºF (150/205ºC) followed by a 6-8 hour anneal at 1350/1450ºF (730/790ºC) and air cooling. If weld properties are important then a 420 filler rod should be used; if not a 309 filler rod is satisfactory. ►Stainless Steel 420 Chemical Composition
Please contact us for more details. The technical data provided is for information only and not for design purposes.►Stainless Steel 420 Mechanical Properties
Please contact us for more details. The technical data provided is for information only and not for design purposes. |
