420J2 stainless steel plate , 420J2 stainless steel rod, 420J2 stainless steel wire, 420J2 stainless steel belt, 420J2 stainless steel Flat steel Application and characteristics of, chemical composition table and physical and mechanical composition table, 420J2 weight calculation company, stainless steel application, Stainless steel care and rust prevention knowledge, Storage and transportation of stainless steel , stainless steel picture introduction, 420J2 stainless steel production machinery and processing machinery introduction, stainless steel production flow chart, stainless steel inventory corner diagram introduction, pin Introduction to sales services
420J2 stainless steel introduction
The stainless steel rod : bright stainless steel rod, polished stainless steel rod, stainless steel round rod, stainless steel black leather rod, super diameter stainless steel rod Ultra small diameter stainless steel bar, stainless steel grinding bar, stainless steel hexagonal bar, stainless steel square bar.
Stainless steel plate ： Spring Steel plate, bright stainless steel plate, polished stainless steel plate, accurate stainless steel plate, 2b stainless steel plate, 8k stainless steel plate, 6k stainless steel plate, ba stainless steel plate, mirror stainless steel plate, ultra-thin stainless steel plate, medium thick stainless steel plate, thick stainless steel plate, ultra thick stainless steel plate.
Stainless steel wire : bright stainless steel wire, stainless steel spring wire, stainless steel screw wire, stainless steel electrolytic wire, stainless steel wire, extended stainless steel wire, tensile stainless steel wire
Stainless steel belt : bright stainless steel belt, mirror stainless steel belt, high temperature resistant stainless steel belt, stainless steel soft belt, stainless steel full hard belt, stainless steel semi hard belt, stainless steel extension belt, stamping resistant stainless steel belt, wear-resistant stainless steel belt, elastic stainless steel belt, double bright stainless steel belt, polished stainless steel belt 。
Application and Characteristics of 420J2 Stainless Steel
420J2 stainless steel has certain wear resistance and corrosion resistance, high hardness, and is suitable for working environment with common requirements for stainless steel. Applicable to all kinds of accurate machinery, bearings, electrical, equipment, instruments, meters, transportation tools Household Electric Appliances Etc. It is mainly used to manufacture parts resistant to atmospheric, steam, water and oxidizing acid corrosion. 420J2 steel, also called 3Cr13 steel, is martensitic stainless steel, which is used after quenching and tempering. Compared with 1Cr13 and 2Cr13 steel, it has higher strength, hardness and hardenability, but its corrosion resistance and thermal stability below 700 ℃ are lower than 1Cr13 and 2Cr13 steel, and it has better machinability in annealing state.
Chemical composition and physical and mechanical properties of 420J2 stainless steel
chemical composition /% |
Brand | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | other |
420J2 | 0.26-0.40 | ≤1.00 | ≤ one point two five | ≤0.060 | ≤0.15 | ≤0.60 | 12.0~ fourteen | zero point six zero | —— | —— | —— |
mechanical property |
Brand | heat treatment | Yield strength σ 0.2/Mpa | Tensile strength σ b/Mpa | Elongation δ 5/% | HBS | HRB | HV |
420J2 | 780~850 Quick cooling | ≥ two hundred and twenty-five | ≥ five hundred and ten | ≥ eighteen | ≤235 | ≤99 | ≤247 |
Stainless steel weight calculation formula:
Weight calculation formula of stainless steel bar: radius x radius x 3.14 x length x 7.9/1000000
Weight calculation formula of stainless steel plate: length x width x thickness x 7.9/1000000
Weight calculation formula of stainless steel wire: radius x radius x 3.14 x length x 7.9/1000000
Weight calculation formula of stainless steel flat steel: length x width x thickness x 7.9/1000000
Mass calculation formula of stainless steel pipe: (outer diameter radius x outer diameter radius x 3.14 x length x 7.9/1000000) - (inner diameter radius x inner diameter radius x 3.14 x length x 7.9/1000000)
Stainless steel use:
industry | Main use cases | industry | Main use cases |
automobile | External parts | building material | MIRROR (Mirror material) |
Hot parts | Regrinding |
FLATWARE (a kind of vessel) | SPOON (spoon) FORK fork | Elevator. |
Knives | Interior and exterior decoration materials of buildings |
HOLLOWWARE Tableware (two kinds of utensils) | Deep drawing（ DDQ ） | Windows and door materials |
DRAWING (General stretching) | Chemical equipment | heat exchanger |
PRESS (Stamping) | Boiler and tank |
SPINNING (Spinning) | Chemical industrial furnace |
Kitchen equipment | Sink（ SINK ）General tensile material (high surface requirements) | Chemical equipment parts |
gas cooker - High surface requirements | General purpose | RWROLL (for re rolling steel) |
Refrigerator (freezer liner) | For high hardness |
Electrical appliances | Washing machine, dryer | For processing plant |
Microwave Oven | Market flow general |
Electronic components (non-magnetic) | Special purpose |
For steel pipe | Decorative tube | Transportation equipment | Container |
Construction pipe (industrial use) | ***Vehicle |
For pipe laying | |
Stainless steel care and rust prevention knowledge
Causes of stainless steel rusting ：
1. There are dust containing other metal elements or attachments of heterogeneous metal particles on the stainless steel surface,
In the humid air, the condensed water between the attachment and the stainless steel forms a micro battery to initiate
The protection film is damaged due to electrochemical reaction, which is called electrochemical corrosion.
2. The stainless steel surface adheres to the juice of agricultural production system (such as melon, vegetable, noodle soup, sputum, etc.), and in the presence of water and oxygen,
It forms the acid of agricultural production system, and for a long time, the acid of agricultural production system will corrode the metal surface.
3. The stainless steel surface is adhered with acid, alkali and salt substances (such as alkali water and lime water spray for wall decoration)
Splash), causing local corrosion.
4. In the polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide)
Condensate water, forming sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.
The above conditions can cause the damage of the protective film on the stainless steel surface and lead to corrosion.
Rust prevention knowledge
To ensure that the metal surface is bright for a long time and will not be rusted, we recommend:
1. The surface of decorative stainless steel must be cleaned and scrubbed frequently to remove attachments and repair
The external factors of decoration.
2. The coastal area shall use 316 stainless steel, which can resist seawater corrosion.
Storage and transportation of stainless steel
safekeeping:
During storage, attention shall be paid to moisture, dust, oil, lubricating oil, etc., as well as rust on the surface or poor corrosion resistance of welding
Down.
When water is immersed between the film and the steel plate substrate, the corrosion speed is faster than that without film. The warehouse shall
Put it in a clean, dry and ventilated place to keep the original packaging state. The stainless steel with film shall be protected from direct light, and the film shall be
Periodical inspection shall be carried out. If the film goes bad (the service life of the film is 6 months), it shall be replaced immediately. If the packaging material is wet when padding paper is added
Remove the pad paper immediately to prevent surface corrosion.
Transportation:
In order to avoid scratches on the surface during transportation, rubber or sleepers should be used, and stainless steel protection special materials should be used as far as possible to avoid fingerprints
Gloves shall be worn during operation for surface pollution.
420f Picture introduction:
Stainless steel production machinery
Stainless steel processing machinery
Production flow chart:
One corner drawing of warehouse
Sales service:
1. Quick response: promise to give you detailed quotation description and product data in a relatively fast time; Promise to customize the products you require in a short time
2. High quality products and prices: our company has reduced the company's production costs by taking measures such as the manufacturer's massive purchase of various raw materials, and ensured that the products are of high quality and low price, and effectively favored the advantages of our company's scale effect to customers)
3. Attentive service: all products sold by our company enjoy some paid services. Customers with large volume or long-term cooperation can become our VIP customers, enjoying more affordable prices and VIP like services.
Our company's slogan is "Professional because of focus". Our company will, as always, spare no effort to produce high-quality products for you. Welcome new and old customers to call and inquire 。
