1. Thickness:0.1mm - 80mm
Width:800mm - 2,000mm
Length:300mm - 12,000mm
3. Grades: Type 321 Stainless Steel
4. PVC film: Novacel(laser cutting)
5. Standard: ASTM/ASTE UNS S32100/UNS S32109
Type 321 stainless steel (UNS S32100) is a stabilized austenitic stainless steel similar to Type 304 but with a titanium addition of at least five times the carbon content. This titanium addition reduces or prevents carbide precipitation during welding and in 800 - 1500ºF (427 - 816ºC) service. It also improves the elevated temperature properties of the alloy.
Type 321H stainless steel (UNS S 32109) is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000ºF (537°C). In most instances, the carbon content of the plate enables dual certification.
STANDARD CHEMICAL COMPOSITION
Grade Cr Ni C Si Mn P S N Ti Fe 321 min:17.0
max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
Balance 321H min:17.0
max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
NOMINAL MECHANICAL PROPERTIES
Grade Tensile Strength
Yield Strength 0.2%
Offset ksi (min.)
Elongation% in 50mm (min.) Hardness (Brinell) MAX 321/H 75 30 40 217
NOMINAL PHYSICAL PROPERTIES
Coefficient of Thermal Expansion (min/in) ºF Thermal Conductivity BTU/hr-ft-ºF Specific Heat BTU/lbm-ºF Modules of Elasticity (annealed)2
at 68 ºF at 68-212ºF at 68-1832ºF at 200ºF at 32-212ºF in tension (E) 0.286 9.2 20.5 9.3 0.12 28 x 106
APPLICATIONS OF 321/H STAINLESS STEEL SHEET/PLATE
- Aerospace - piston engine manifolds
- Chemical processing
- Expansion joints
- Food processing - equipment and storage
- Petroleum refining - polythionic acid service
- Waste treatment - thermal oxidizers
ADDITIONAL PROPERTIES OF 321/H STAINLESS STEEL SHEET/PLATE
- Corrosion Resistance
Type 321 stainless steel has similar corrosion behavior to Type 304 with the exception of improved intergranular corrosion resistance due to the titanium addition for stablization. Resistance to organic acids and some inorganic acids is excellent. However, long term exposure to temperatures between 900-1500ºF (482-816°C) may reduce its overall general corrosion resistance but remains improved compared to unstabilized grades.
Type 321 can be readily formed and drawn, however, higher pressures are required and more springback is encountered than for carbon steel and ferritic stainless steels. Like other austenitic stainless steels, Type 321 work hardens quickly and may require annealing after severe forming. The presence of certain alloying elements can make Type 321 more difficult to form than other austenitic grades such as 301, 304 and 305.
The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid weld "hot cracking" by assuring formation of ferrite in the weld deposit. This particular alloy is generally considered to have comparbale weldability to Types 304 and 304L. A major difference is the titanium addition that reduces or prevents carbide precipitation during welding. When a weld filler is needed, either AWS E/ER 347 or E/ER 321 is most often specified.
- Heat Treatment
Type 321 is non-hardenable by heat treatment.
Annealing: Heat to 1750 -2050ºF (954-1121°C), then water quench or air cool.
- Corrosion Resistance
SURFACE FINISH OF 321/H STAINLESS STEEL SHEET/PLATE :
*Not all finishes are available in all alloys - (contact Yieh United Sales for more information)
#1 Finish Hot rolled, annealed and pickled. #2D Finish A uniform, dull silver gray mill finish that is applied to thinner stainless steel coils,the thickness of which has been reduced by cold rolling. #2B Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line. #3 Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line. #4 Finish Also called brushed, directional or satin finish. A is characterized by fine polishing grit lines that are uniform and directional in appearance. The final abrasive used in the process is 150 to 220 grit. #4 Satin Brush Finish 150 to 180 grit finish A fine directional polish, typically used in the washroom accessories industry. Most 3.5″ floppy diskette cover plates have this finish. #6 Finish Polished finish achieved with the equivalent of a 240 grit abrasive. Finer grit lines and higher reflectivity than a No. 4 finish. #7 Finish Highly reflective surface obtained with the equivalent of a 320 grit abrasive. Minimal grit lines. No. 8 or True #8 mirror This is the most reflective mirror finish on the market. All of the polishing, or “grit,” lines from the preliminary polishing operations are removed. The look is that of a glass mirror. Sometimes referred to as a non directional mirror finish, Super 8, No. 9, Perfect No. 10, and even No. 12 mirror. CMP Super #8 mirror Chemical Mechanical Polished Super #8 mirror finished sheets are guaranteed to be free from any manufacturing defects. This product represents the ultimate in mirror polished stainless steel. It is available as a single-sided or double-sided mirror polished sheet. Hairline finish 80 – 140 grit finish A well defined directional polish. Starting base substrate is a No. 4 finish sheet; these sheets are polished to provide a “continuous long grain” hairline look. A finish which is popular with architects for its aesthetic, it is equally popular with fabricators due to it’s ease of fabrication and finish matching properties after welding operations.
INNOVATIVE TECHNOLOGY of 321/H STAINLESS STEEL SHEET/PLATE
At Yieh United Corporation, we never stop improving and developing our technologies to go beyond our customer’s expectations. We strive towards these goals to produce reliable products and ensure they can be fully utilized throughout their lifetime.
PACKING FOR 321/H STAINLESS STEEL SHEET/PLATE
Our 321/H stainless steel products are packed and labeled according to the regulations and customers’ requests.
1. What is the minimum order quantity (MOQ)?
- Normally, the MOQ for our stainless steel sheet is 200 Kg. If we have any excess inventory of stainless steel sheet, there’s no MOQ requirement. You can ask us to check when you are interested in purchasing them.
2.What is the payment method?
- For new customers: 30%T/T deposit 70%T/T Before shipment. – For partners and distributors, 30%T/T deposit 70% T/T Against B/L Copy.
3.What is the acceptable currency?
- We accept USD, EUR and RMB.
4.What is the delivery time?
- 5 days in advance.
5.Where is the loading port?
- Normally, our loading ports are Shanghai, Tianjin, and Shenzhen. You can choose anyone of them, or you can select the other ports.
6.What is the delivery term?
- FOB, CIF, CFR, EXW
7.Do you offer free samples?
- Yes, based on our stock status, we will send our customer free samples. The express fee is to be paid by our customers.