Stainless steel blind flanges are a type of pipe fitting made of stainless steel. Different types of flanges are made of different material grades. The material grade corresponds to the mechanical properties of the flange. A blind flange is a special type of flange that, instead of joining two pieces of pipe together, ends the connection at one end of the pipe.
Steel blind flanges are used in various industrial applications such as oil, gas, chemical, pharmaceutical, and marine applications. There are other types of flanges such as reducer blind flanges used to connect pipes of different diameters.
321 stainless steel is a material with excellent high-temperature stress rupture performance and creep resistance stress mechanical properties that are better than 304 stainless steel. 321 stainless steel has better corrosion resistance in the atmosphere and is widely used in the petrochemical, power, bridge, and automotive industries.
Stainless steel 321 blind flanges are composed of titanium-stabilized chromium-nickel austenitic stainless steel that resists intergranular corrosion.
Specifications of Stainless Steel 321 Blind Flange
Specifications: ASTM A182/ASME SA182
Standards: ANSI, ASTM, ASME, BS, EN, DIN
Class: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64, etc.
Flange Face Type: Flate Face (FF), Raised Face (RF), etc.
Sizes: 1/2" to 48" (15NB-1200NB)
Payment Terms: T/T, L/C
Delivery Time: As per quantity required
Chemical Composition (%) of Stainless Steel 321 Blind Flange
|
C, max |
Mn, max |
Si, max |
P, max |
S, max |
Cr |
N, max |
Ni |
Ti, max |
|
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
17.00-19.00 |
0.10 |
9.00-12.00 |
5(C+N)-0.70 |
Mechanical Properties of Stainless Steel 321 Blind Flange
|
Density |
Melting Point |
Tensile Strength, Psi [MPa], min |
Yield Strength (0.2%Offset), Psi [MPa], min |
Elongation (%), min |
|
8.0 g/cm³ |
1457℃ (2650℉) |
75000 [515] |
30000 [205] |
35 |
Pressure Rating Table of Stainless Steel 321 Blind Flange
|
Temperature ℉ |
150# |
300# |
400# |
600# |
900# |
1500# |
2500# |
|
-20 to 100 |
275 |
720 |
960 |
1440 |
2160 |
3600 |
6000 |
|
200 |
230 |
600 |
800 |
1200 |
1800 |
3000 |
5000 |
|
300 |
205 |
540 |
720 |
1080 |
1620 |
2700 |
4500 |
|
400 |
190 |
495 |
660 |
995 |
1490 |
2485 |
4140 |
|
500 |
170 |
465 |
620 |
930 |
1395 |
2330 |
3880 |
|
600 |
140 |
435 |
580 |
875 |
1310 |
2185 |
3640 |
|
650 |
125 |
430 |
575 |
860 |
1290 |
2150 |
3580 |
|
700 |
110 |
425 |
565 |
850 |
1275 |
2125 |
3540 |
|
750 |
95 |
415 |
555 |
830 |
1245 |
2075 |
3460 |
|
800 |
80 |
405 |
540 |
805 |
1210 |
2015 |
3360 |
|
850 |
65 |
395 |
530 |
790 |
1190 |
1980 |
3300 |
|
900 |
50 |
390 |
520 |
780 |
1165 |
1945 |
3240 |
|
950 |
35 |
380 |
510 |
765 |
1145 |
1910 |
3180 |
|
1000 |
20 |
320 |
430 |
640 |
965 |
1605 |
2675 |
|
1050 |
20 |
310 |
410 |
615 |
925 |
1545 |
2570 |
|
1100 |
20 |
255 |
345 |
515 |
770 |
1285 |
2145 |
|
1150 |
20 |
200 |
265 |
400 |
595 |
995 |
1655 |
|
1200 |
20 |
155 |
205 |
310 |
465 |
770 |
1285 |
|
1250 |
20 |
115 |
150 |
225 |
340 |
565 |
945 |
|
1300 |
20 |
85 |
115 |
170 |
255 |
430 |
715 |
|
1350 |
20 |
60 |
80 |
125 |
185 |
310 |
515 |
|
1400 |
20 |
50 |
65 |
95 |
145 |
240 |
400 |
|
1450 |
15 |
35 |
45 |
70 |
105 |
170 |
285 |
|
1500 |
10 |
25 |
35 |
55 |
80 |
135 |
230 |
Equivalent Grades of Stainless Steel 321 Blind Flange
|
STANDARD |
WERKSTOFF NR. |
UNS |
JIS |
EN |
|
SS 321 |
1.4541 |
S32100 |
SUS 321 |
X6CrNiTi8-10 |
Application of Stainless Steel 321 Blind Flange
- Chemical plants
- Electric power industry
- Gas industry
- Hardware tools
- Metallurgy industry
- Machinery industry
- Construction industry
- Shipbuilding industry
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