Do You Konw The Characteristics and Uses Of Stainless Steel?

Series

ASTM

GB

SUS

Nature Use

Application

200

201

1Cr17Mn6Ni5N

SUS201

It has the characteristics of acid and alkali resistance, high density, no bubbles, no pinholes, etc. It is used to produce high-quality materials for various watch cases and watchband bottom covers.

Mainly used to make decorative tubes, industrial tubes, and some shallow stretch products.

202

1Cr18Mn8Ni5N

SUS202

Part of the nickel is replaced with Mn and N, thereby obtaining good mechanical properties and corrosion resistance. It is a new type of nickel-saving stainless steel. Its room temperature strength is higher than that of 304, and it has better oxidation resistance and resistance below 800 degrees. Medium temperature intensity

Mainly used to make decorative tubes, industrial tubes, and some shallow stretch products.

2205

00Cr22Ni5Mo3N

SUS2205

Its Cr, Mo and N elements are relatively narrow, and it is easy to achieve phase balance (that is, the two phases account for about half), which improves the strength, corrosion resistance and welding performance of steel. It is mostly used for high performance requirements and welding. Materials, such as oil and gas pipelines, etc..

Used in heat exchangers and cold showers and devices for oil refining, fertilizers, papermaking, petroleum, chemical industries, etc., which are resistant to seawater and high temperature and concentrated nitric acid.

300

304

1Cr18Ni9

(06Cr18Ni10)

SUS304

304 stainless steel as a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Good hot workability for stamping, bending, etc., no heat treatment hardening phenomenon (non-magnetic, use temperature -196℃~800℃)

Food industry, household products (1, 2 types of tableware, kitchen cabinets, indoor pipelines, water heaters, boilers, bathtubs)

304J1

SUS304J1

Cu should be added for good formability, especially wire drawing and ageing crack resistance, and it can be formed into products with complex shapes. Its corrosion resistance is the same as 304 steel

Vacuum flasks, kitchen sinks, pots, pots, insulated lunch boxes, door handles, textile processing machines.

304L

00Cr19Ni10

SUS304L

As a low-C 304 steel, its corrosion resistance is similar to that of 304 steel under normal conditions, but after welding or stress relief, its resistance to intergranular corrosion is excellent. It can maintain good corrosion resistance without heat treatment, generally used below 400 (non-magnetic, use temperature -196℃~800℃)

It is used in outdoor machinery, building materials, heat-resistant parts and parts with difficult heat treatment requirements in the chemical, coal, and petroleum industries that require high grain boundary corrosion resistance.

321

1Cr18Ni9Ti

SUS321

Ti element is added to 304 steel to prevent grain boundary corrosion. Suitable for use at 430℃~900℃

Medical equipment, building materials, chemistry, agriculture, ship parts, nuclear energy industry, aircraft, pipes, boiler drums, auto parts (windshield wipers, mufflers, molded products)

316

0Cr17Ni12Mo2

SUS316

Mo should be added, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and it can be used under harsh conditions. Excellent work hardening (non-magnetic)

Equipment, chemistry, dyes, paper making in sea water. Oxalic acid, fertilizer and other production equipment; photography, food industry, coastal area facilities, ropes, CD rods, bolts, nuts

316L

00Cr17Ni14Mo2

SUS316L

As a low-C series of 316 steel, in addition to having the same characteristics as 316 steel, its resistance to intergranular corrosion is excellent

In 316 steel applications, products that have special requirements for resisting grain boundary corrosion

309S

0Cr23Ni13Mo2

SUS309s

23Cr-13Ni high-alloy steel stainless steel, excellent corrosion resistance and strength, suitable for parts whose working temperature is 1000℃

Exhaust equipment, heat treatment furnaces and heat exchangers, etc.

310S

0Cr25Ni20Si2

SUS310S

Very good oxidation resistance, corrosion resistance, high temperature resistance, because of the higher percentage of chromium and nickel, 310S has much better creep strength, can work continuously at high temperatures, and has good high temperature resistance.

Boilers, exhaust equipment, heat treatment furnaces, heat exchangers, etc.

400

409L

00Cr12Ti

SUS409L

The cheapest model. Because of the addition of Ti element, its high temperature corrosion resistance and high temperature strength are better. Ferritic stainless steel (chrome steel)

Automobile exhaust pipes, heat exchangers, containers and other products that should not be heat treated after welding

410

1Cr13

SUS410

It is a representative steel of martensitic steel. Although it has high strength, it is not suitable for use in harsh corrosive environments. Its workability is good, and the heat-treated surface is hardened (magnetic)

Knives, mechanical parts, petroleum refining devices, bolts, nuts, pump rods, class 1 tableware (knives, forks)

420J1

2Cr13

SUS420J1

High hardness after quenching, good corrosion resistance (magnetic)

Tableware (knives), turbine blades

420J2

3Cr13

SUS420J2

After quenching, the hardness is higher than that of 420J1 steel (magnetic)

Blades, nozzles, valves, rulers, tableware (scissors, knives)

430

1Cr17

SUS430

As a representative steel grade of ferritic steel, low thermal expansion rate, excellent formability and oxidation resistance

Heat-resistant appliances, burners, home appliances, class 2 tableware, kitchen sinks, exterior decoration materials, bolts, nuts, CD rods, screens

444

Water tank special board