321 Stainless Steel Sheet | ||||||||
Product: | ASTM 321 Stainless Steel Sheet | |||||||
Material: | Stainless Steel 200 series,300series,400series | |||||||
Standard: | ASTM 321,S32100,SUS321,0Cr18Nil0T | |||||||
Dimension: | Thickness:0.25-50mm,Width:1000mm,1219mm,1500mm,1800mm | |||||||
Length: | 2000mm,2438mm,3000mm,6000,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. |
321 stainless steel plates/sheet:
Introduction:
SUS321 stainless steel (UNS S32100) is a stainless steel with very good stability.321 stainless steel is a material with excellent high-temperature stress rupture (Stress Rupture) performance and high-temperature creep resistance (Creep Resistance) stress mechanical properties are superior to 304 stainless steel.
321 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
German grade: X10CrNiTi189
Austenitic stainless steel is equivalent to domestic grade 0Cr18Ni10Ti 321 stainless steel is Ni-Cr-Mo austenitic stainless steel, its performance is very similar to 304, but because of the addition of titanium metal, it has better resistance to grain boundary corrosion and High temperature strength. Due to the addition of metallic titanium, it effectively controls the formation of chromium carbide.
321 austenitic stainless steel has good corrosion resistance in the atmosphere, and is widely used in petrochemical, electric power, bridge and automobile industries [1]. But the “stainlessness” of stainless steel is not absolute. Due to the special service environment, stainless steel will also corrode. Factors such as medium concentration, pH value, and temperature will have a greater impact on the corrosion resistance of stainless steel. For example, if it is used for a long time in the sensitization temperature range of 450~850℃, the intergranular corrosion of stainless steel will occur. The mechanism is that C combines with Cr at the grain boundary to form Cr23C6 and precipitate, which reduces the Cr content at the grain boundary. This is called “chromium-depleted”. The Cr element is one of the main elements that inhibit intergranular corrosion. When the Cr content at the grain boundary is less than 12%, the chance of intergranular corrosion will increase.
Industry application:
Used in outdoor open-air machines that require high chemical, coal, and petroleum industries to resist grain boundary corrosion, heat-resistant parts for building materials, and parts with difficult heat treatment
1. Petroleum waste gas combustion pipeline
2. Engine exhaust pipe
3. Boiler shell, heat exchanger, heating furnace parts
4. Silencer parts for diesel engines
5. Boiler and pressure vessel
6. Chemical truck
7. Expansion joint
8. Spiral welded pipes for furnace pipes and dryers
Physical properties:
The physical properties of alloys 321 and 347 are quite similar, in fact, they can be regarded as the same. The values listed in the table apply to both alloys.
If properly annealed, alloys 321 and 347 stainless steel mainly contain austenite and titanium carbide or niobium carbide. A small amount of ferrite may or may not appear in the microstructure. If exposed to temperatures between 1000°F-1500°F (593°C-816°C) for a long time, a small amount of sigma phase may form.
Heat treatment cannot harden the stable alloys 321 and 347 stainless steel.
In addition to the thermal conductivity of the metal, the total heat transfer coefficient of the metal also depends on other factors. In most cases, the film heat dissipation coefficient, rust and metal surface conditions. Stainless steel can keep the surface clean, so its heat transfer is better than other metals with higher thermal conductivity.
Permeability
The stable alloys 321 and 347 are generally not magnetic. In the annealed state, its magnetic permeability is lower than 1.02. Permeability will change due to composition and increase due to cold work. The permeability of welds containing ferrite will be higher.
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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