321STANLESS STEEL COIL
Introduction:
Stainless steel 321 is a Ni Cr Mo heat-resistant, titanium stable austenitic alloy, which is usually used in the temperature range of 1000 ° to 1600 ° F. 321 stainless steel is mainly used for continuous and intermittent service temperature applications with carbide precipitation range from 800 ° f to 1500 ° F. Type 321 is similar to type 304 stainless steel, but the addition of titanium is at least five times that of carbon. This addition of titanium reduces or prevents carbide precipitation during welding and service conditions from 800 ° to 1500 ° F. In order to provide the best resistance to intergranular corrosion and stress corrosion cracking of polysulfate at service temperatures from 1500 ° to 1650 ° F, air cooling can be used.
Chemical composition:
carbon: 0.08 silicon: 1.00 manganese: 2.00 phosphorus: 0.045 sulfur: 0.030 nickel: 9.00-12.00 chromium: 17.00-19.00 titanium: 5c-0.70
Germany: X10CrNiTi189
Austenitic stainless steel is equivalent to domestic brand 0Cr18Ni10Ti 321 stainless steel is ni-cr-mo austenitic stainless steel, its performance is very similar to 304, but due to the addition of titanium metal, it has better grain boundary corrosion resistance and high temperature strength. Due to the addition of titanium, the formation of chromium carbide is effectively controlled.
321 austenitic stainless steel has good corrosion resistance in the atmosphere and is widely used in petrochemical industry, power industry, bridge and automobile industry [1]. But the stainless steel “rust” is not absolute, because of the special service environment, stainless steel will corrosion. Medium concentration, pH value, temperature and other factors will have a greater impact on the corrosion resistance of stainless steel. For example, in the range of 450~850℃ sensitization temperature long-term use, stainless steel will occur intercrystalline corrosion. The mechanism is that C combines with Cr at the grain boundary to form Cr23C6 and precipitate out, reducing the Cr content at the grain boundary. This is the so-called “poor chromium”. Cr element is one of the main elements inhibiting intercrystalline corrosion. When the Cr content at the grain boundary is less than 12%, the probability of intercrystalline corrosion will increase.
Industry application:
It is used in outdoor machines with high chemical, coal and petroleum industries to resist grain boundary corrosion
1. Petroleum exhaust combustion pipeline
2. Engine exhaust pipe
3.Boiler shell, heat exchanger, heater parts
4. Silencing components for diesel engines
5.Boiler pressure vessel
6. Chemical tanker
7.Expansion joint
8. Spiral welded pipes for furnace pipes and dryers
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321 Stainless Steel Coil | ||||||||
Product: | ASTM 321 Stainless Steel Coil | |||||||
Material: | Stainless Steel 200 series,300series,400series | |||||||
Standard: | ASTM 321,S32100,SUS321,0Cr18Nil0T | |||||||
Dimension: | Thickness:0.25-50mm,Width:1000mm,1219mm,1500mm,1800mm | |||||||
Length: | Random Length | |||||||
Surface Finish: | No.1/2B/No.4/4K/6K/8K/HL/Brushed | |||||||
Tchnology: | Cold Rolled ,Hot Rolled | |||||||
MOQ: | 1TON | |||||||
Package: | Standard Export Packing,Or As Per Your Requirement | |||||||
Application: | Railings,Staircase Railing Balustrade,Windows,Balustrsde System,Equipment Manufacturing and Maintenance,etc. |
Mechanical Property | |||||
ASTM | TS(Mpa)≥ | YS(Mpa)≥ | EL(%)≥ | Hardness | |
HB | HRB | ||||
201 | 520 | 275 | 40 | 241 | 100 |
202 | 520 | 275 | 40 | 207 | 95 |
301 | 520 | 205 | 40 | 207 | 95 |
304 | 520 | 205 | 40 | 20 | 90 |
304L | 480 | 175 | 40 | 187 | 90 |
309S | 520 | 205 | 40 | 187 | 90 |
310 | 520 | 205 | 40 | 187 | 90 |
310S | 520 | 205 | 40 | 187 | 90 |
316 | 520 | 205 | 40 | 187 | 90 |
316L | 480 | 175 | 40 | 187 | 90 |
316Ti | 520 | 205 | 40 | 187 | 90 |
317L | 480 | 175 | 40 | 187 | 90 |
321 | 520 | 205 | 40 | 187 | 90 |
430 | 450 | 205 | 22 | 183 | 88 |
904L | 490 | 216 | 35 | ||
2205 | 640 | 25 |
Chemical Composition | ||||||||||||
Chemical Composition(%) | ||||||||||||
C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | Other | ||
1Cr17Mn6Mi5N | 201 | 0.15 | 1.00 | 5.5-5.7 | 0.06 | 0.03 | 3.3-3.5 | 16-18 | _ | _ | 0.05-0.25 | |
1Cr18Mn8Mi5N | 202 | 0.15 | 1.00 | 7.5-10 | 0.06 | 0.03 | 4.0-6.0 | 17-19 | _ | _ | 0.05-0.25 | |
1Cr18Mn8Mi5N | 301 | 0.15 | 1.00 | 2.00 | 0.07 | 0.03 | 6.0-8.0 | 16-18 | _ | _ | 0.10 | |
0Cr18Ni9 | 304 | 0.07 | 1.00 | 2.00 | 0.035 | 0.03 | 8.1-10.0 | 17-19 | _ | _ | _ | |
0Cr18Ni9 | 309S | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 12.0-15.0 | 22-24 | _ | _ | _ | |
0Cr25Ni20 | 310S | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 19.0-22.0 | 24-26 | _ | _ | _ | |
0Cr17Ni12Mo2 | 316 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 10.0-14.0 | 16-18.5 | 2.0-3.0 | _ | _ | |
00Cr17Ni14Mo2 | 316L | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 12.0-15.0 | 16-18 | 2.0-3.0 | _ | _ | |
0Cr18Ni12Mo3Ti | 316Ti | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 11.0-14.0 | 16-19 | 2.5-3.5 | _ | _ | Ti≥5C |
0Cr18Ni12Mo3Ti | 317L | 0.03 | 1.00 | 2.00 | 0.035 | 0.03 | 11.0-15.0 | 18-20 | 3.0-4.0 | _ | _ | |
1Cr18Ni9Ti | 321 | 0.12 | 1.00 | 2.00 | 0.035 | 0.03 | 8.0-11.0 | 17-19 | _ | _ | _ | Ti5C-0.70 |
1Cr12 | 430 | 0.12 | 1.00 | 2.00 | 0.035 | 0.03 | 0.60 | 16-18 | _ | _ | _ | |
00Cr20Ni25Mo4.5Cu | 904L | 0.02 | 1.00 | 2.00 | 0.035 | 0.03 | 23.0-28.0 | 19-23 | 4.0-5.0 | 1.0-2.0 | 0.14-0.20 | |
00Cr2Ni5Mo3N | 2205 | 0.03 | 1.00 | 2.00 | 0.035 | 0.02 | 4.5-6.5 | 21-23 | 2.5-3.5 | _ | _ |
Stainless steel national standard _ stainless steel implementation standard _ national stainless steel grade comparison table | ||||||||||
No | China GB | Japan | United States | Korea | EU | India | Australia | Taiwan, China | ||
Old grade | New grade(07.10) | JIS | ASTM | UNS | KS | BS EN | IS | IS | CNS | |
Austenitic stainless steel | ||||||||||
1 | lCrl7Mn6Ni5N | 12Crl7Mn6Ni5N | SUS201 | 201 | S20100 | STS201 | 1.4372 | 10Crl7Mn6Ni4N20 | 201-2 | 201 |
2 | lCrl8Mn8NI5N | 12Crl8Mn9Ni5N | SUS202 | 202 | S20200 | STS202 | 1.4373 | - | 202 | |
3 | lCrl7Ni7 | 12Crl7Ni7 | SUS301 | 301 | S30100 | STS301 | 1.4319 | 10Crl7Ni7 | 301 | 301 |
4 | 0Crl8Ni9 | 06Crl9Nil0 | SUS304 | 304 | S30400 | STS304 | 1.4301 | 07Crl8Ni9 | 304 | 304 |
5 | 00Crl9Nil0 | 022Crl9Nil0 | SUS304L | 304L | S30403 | STS304L | 1.4306 | 02Crl8Nill | 304L | 304L |
6 | 0Crl9Ni9N | 06Crl9Nil0N | SUS304N1 | 304N | S30451 | STS304N1 | 1.4315 | - | 304N1 | 304N1 |
7 | 0Crl9Nil0NbN | 06Crl9Ni9NbN | SUS304N2 | XM21 | S30452 | STS304N2 | - | - | 304N2 | 304N2 |
8 | 00Crl8Nil0N | 022Crl9Nil0N | SUS304LN | 304LN | S30453 | STS304LN | - | - | 304LN | 304LN |
9 | lCrl8Nil2 | 10Crl8Nil2 | SUS305 | 305 | S30500 | STS305 | 1.4303 | - | 305 | 305 |
10 | 0Cr23Nil3 | 06Cr23Nil3 | SUS309S | 309S | S30908 | STS309S | 1.4833 | - | 309S | 309S |
11 | 0Cr25Ni20 | 06Cr25Ni20 | SUS310S | 310S | S31008 | STS310S | 1.4845 | - | 310S | 310S |
12 | 0Crl7Nil2Mo2 | 06Crl7Nil2Mo2 | SUS316 | 316 | S31600 | STS316 | 1.4401 | 04Crl7Nil2Mo2 | 316 | 316 |
13 | 0Crl8Nil2Mo3Ti | 06Crl7Nil2Mo2Ti | SUS316TI | 316TI | S31635 | - | 1.4571 | 04Crl7Nil2MoTi20 | 316Ti | 316TI |
14 | 00Crl7Nil4Mo2 | 022Crl7Nil2Mo2 | SUS316L | 316L | S31603 | STS316L | 1.4404 | ~02Crl7Nil2Mo2 | 316L | 316L |
15 | 0Crl7Nil2Mo2N | 06Crl7Nil2Mo2N | SUS316N | 316N | S31651 | STS316N | - | - | 316N | 316N |
16 | 00Crl7Nil3Mo2N | 022Crl7Nil3Mo2N | SUS316LN | 316LN | S31653 | STS316LN | 1.4429 | - | 316LN | 316LN |
17 | 0Crl8Nil2Mo2Cu2 | 06Crl8Nil2Mo2Cu2 | SUS316J1 | - | - | STS316J1 | - | - | 316J1 | 316J1 |
18 | 00Crl8Nil4Mo2Cu2 | 022Crl8Nil4Mo2Cu2 | SUS316J1L | - | - | STS316J1L | - | - | - | 316J1L |
19 | 0Crl9Nil3Mo3 | 06Crl9Nil3Mo3 | SUS317 | 317 | S31700 | STS317 | - | - | 317 | 317 |
20 | 00Crl9Nil3Mo3 | 022Crl9Nil3Mo3 | SUS317L | 317L | S31703 | STS317L | 1.4438 | - | 317L | 317L |
21 | 0Crl8Nil0Ti | 06Crl8NillTi | SUS321 | 321 | S32100 | STS321 | 1.4541 | 04Crl8Nil0Ti20 | 321 | 321 |
22 | 0Crl8NillNb | 06Crl8NillNb | SUS347 | 347 | S34700 | STS347 | 1.455 | 04Crl8Nil0Nb40 | 347 | 347 |
Austenitic-ferritic stainless steel (duplex stainless steel) | ||||||||||
23 | 0Cr26Ni5Mo2 | - | SUS329J1 | 329 | S32900 | STS329J1 | 1.4477 | - | 329J1 | 329J1 |
24 | 00Crl8Ni5Mo3Si2 | 022Crl9Ni5Mo3Si2N | SUS329J3L | - | S31803 | STS329J3L | 1.4462 | - | 329J3L | 329J3L |
0Crl8Nil0Ti ferritic stainless steel | ||||||||||
25 | 0Crl3AI | 06Crl3Al | SUS405 | 405 | S40500 | STS405 | 1.4002 | 04Crl3 | 405 | 405 |
26 | - | 022CrllTi | SUH409 | 409 | S40900 | STS409 | 1.4512 | - | 409L | 409L |
27 | 00Crl2 | 022Crl2 | SUS410L | - | - | STS410L | - | - | 410L | 410L |
28 | lCrl7 | 10Crl7 | SUS430 | 430 | S43000 | STS430 | 1.4016 | 05Crl7 | 430 | 430 |
29 | lCrl7Mo | 10Crl7Mo | SUS434 | 434 | S43400 | STS434 | 1.4113 | - | 434 | 434 |
30 | - | 022Crl8NbTi | - | - | S43940 | - | 1.4509 | - | 439 | 439 |
31 | 00Crl8Mo2 | 019Crl9Mo2NbTi | SUS444 | 444 | S44400 | STS444 | 1.4521 | - | 444 | 444 |
Martensitic stainless steel | ||||||||||
32 | lCrl2 | 12Crl2 | SUS403 | 403 | S40300 | STS403 | - | - | 403 | 403 |
33 | lCrl3 | 12Crl3 | SUS410 | 410 | S41000 | STS410 | 1.4006 | 12Crl3 | 410 | 410 |
34 | 2Crl3 | 20Crl3 | SUS420J1 | 420 | S42000 | STS420J1 | 1.4021 | 20Crl3 | 420 | 420J1 |
35 | 3Crl3 | 30Crl3 | SUS420J2 | - | - | STS420J2 | 1.4028 | 30 Crl3 | 420J2 | 420J2 |
36 | 7Crl7 | 68Crl7 | SUS440A | 440A | S44002 | STS440A | - | - | 440A | 440A |
Which is better ss304 or ss316?
Since Type 316 stainless steel alloy contains molybdenum bearing it has a greater resistance to chemical attack than 304. Type 316 is durable, easy-to-fabricate, clean, weld and finish. It is considerably more resistant to solutions of sulfuric acid, chlorides, bromides, iodides and fatty acids at high temperature.
What is good quality stainless steel?
304 stainless steel is the most common form of stainless steel used around the world due to excellent corrosion resistance and value. 304 can withstand corrosion from most oxidizing acids. That durability makes 304 easy to sanitize, and therefore ideal for kitchen and food applications.
What is the difference between 304, 304H and 304L?
In fact, the content of chromium and nickel is 304 stainless steel, and the composition contains 18% chromium (Cr) and 8% nickel (Ni), but the main difference lies in the carbon content.
304L is an ultra-low carbon stainless steel. The carbon content is reduced to less than 0.03%, which can avoid intergranular corrosion. In theory, the effect of stress corrosion resistance is stronger than that of 304, but the effect is not obvious in practical applications. The purpose of reducing carbon and adding titanium is the same, but the smelting cost of titanium-added 321 is higher, the molten steel is thick, and the price is more expensive.
The H in 304H refers to high temperature. High carbon content is the guarantee of high temperature strength. GB150 requires that when austenitic steel is used above 525 degrees, the carbon content should not be less than 0.04%. Carbide is the strengthening phase, especially the high temperature strength. Better than pure austenite.
Among the three, the highest carbon content is 304H, the lowest carbon content is 304L, and the carbon content of 304 stainless steel is between the two. The higher the carbon content, the worse the corrosion resistance of stainless steel and the easier it is to rust. The difference in carbon content also causes the price to be different, or the requirements for different uses are also different.
Why is stainless steel so expensive?
Stainless steel is more expensive to produce because of the addition of the variety of alloying elements, such as iron, chromium, nickel, manganese and copper. … The chromium attaches itself to oxygen more readily than iron and thus creates a chromium oxide layer which protects the metal from degradation.
What is the safest stainless steel?
Stainless steel cookware is generally recognized as a safe material for cookware. Any good quality stainless steel, be it 304 or 316 stainless steel, is a better choice than most of the other available materials. For example, coated aluminum pans lose their non-stick over time.
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