| May 6, 2022 |
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#duplexballvalvesupplier #duplexballvalvestocklist #duplexstainlesssteelballvalves #duplex2205F51ballvalve
.jpg "duplex F51 2205 threaded ball valve")
.png "2205 1")
We produce duplex stainless steel ball valves in threaded female NPT end, pressure PN63/PN64/PN100/PN160 etc, the ball valves are made of duplex sstainless steel 2205 S31803 F51 4A CD3MN ball valves.
What is the duplex stainless steel?
Duplex stainless steel is a mixed austenitic(50%) and ferrite(50%) in view of microstructure, the special structure bring it better performance of strength and corrosion resistance to the origin austenitic stainless steel or ferrite.
The duplex stainless steel has a big family of name and codes. in ASTM grade, it varies from A890/A990/A995 1A, 1B, 1C to 4A, 5A, 6A, 7A; in UNS Numbers, it is called S31803, S32750, S32760 etc; in ASTM Number, it is A998 CD6MN, CD3MN, CE3MN etc; in forging equivalent, it is A182-F51, F53, F55 etc; in common name, it is duplex 2205, super duplex 2507 etc; and in European material codes, it is DIN1.4462, 1.4410, 1.4501 etc;
What is the benefits the duplex steel bring?
Similar corrosion resistance to SS316
Greater tensile and yield strength
Good ductility and toughness
Good stress corrosion cracking resistance (SSC)
What is the applications the duplex steel used in?
Petrochemical
Desalination plants
Chemical processing and transportation
Chloride-handling industries
Valve stems
Equivalent grades:
| ASTM GRADE |
A990-1A |
A990/A995-1B |
A990-1C |
A990/A995-2A |
A990/A995-3A |
A990/A995-4A |
A990/A995-5A |
A990/A995-6A |
A990/A995-7A |
|
| Type |
25Cr5NiMoCu |
25Cr5Ni2Mo3Cu |
25Cr6NiMoCuN |
24Cr10Ni4MoV |
25Cr5NiMoV |
22Cr5Ni3MoN |
25Cr7Ni4MoN |
25Cr7Ni3.5MoWCb |
27Cr7Ni-Mo-W-N |
25Cr7Ni3.5MoWCb |
| UNS No. |
J93370 |
J93372 |
J93373 |
J93345 |
J93371 |
S31803/S32205 |
S32750 |
S32760 |
|
S31254 |
| ASTM No. |
A995-CD4MCuN |
A995 CD4MCu |
A351-CD3MCuN* |
A351-CE8MN/ CD3MCuN |
A351-CD6MN |
A995 CD3MN |
A351-CE3MN |
A995 CD3MWCuN |
A351-CD3MWN |
A351-CK3MCuN |
| Forged Equiv. |
A182-F50* |
|
F61* |
|
|
A182-F51 |
A182-F53 |
A182-F55 |
(Zeron 100TM) |
A182-F44 |
| Common Name |
Duplex |
Duplex |
Duplex |
Duplex |
Duplex |
Duplex 2205 |
Super Duplex 32750 |
Super Duplex |
Super Austenitic/Duplex |
Super Duplex |
| European (DIN) |
|
|
|
|
|
1.4462 |
1.4410 |
1.4501 |
UNS J93379 |
|
Applications:
| FORGING SPECIFICATION |
COMMON DESIGNATION |
ASTM CAST |
WROUGHT BAR SPECIFICATION |
SERVICE RECOMMENDATIONS (1) |
| ASTM A182 F44 |
20% Chrome; 18% Nickel; 6% Mo; 0.25% C Super Stainless Steel |
ASTM A351 Grade CK3MCuN (A995-1B) Super Austenitic |
ASTM A479 S31254 |
(2.54 SMO) Acetic acid, antibiotics and drugs, bleaching compounds, formic acid, fruit and juices, hot air, hot water, hydrocarbons, hydrochloric acid, organic liquids and acids, nitric acid, organic salts, oxalic acid, phosphoric acid, sea water, sewage, sodium bisulfite, steam, sulfamic acid, 10% sulfuric acid. |
| ASTM A182 F50 |
25.5% Chrome; 5.5% Nickel; 2% Mo; 0.040% C Super Stainless Steel |
ASTM A351 Grade CD4MCu (A995-1A) |
ASTM A479 S32550 |
Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). |
|
24% Chrome; 9.5% Nickel; 4% Mo; 0.080% C Duplex Stainless Steel |
ASTM A351 Grade CE8MN (A995-2A) |
|
Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). |
| ASTM A182 F51 |
22% Chrome; 5% Nickel; 3% Mo; N; 0.030% C Duplex Stainless Steel |
ASTM A351 Grade CD3MN (A995-4A) |
ASTM A479 S31803** |
Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). |
| ASTM A182 F53 |
25% Chrome; 7% Nickel; 4.5% Mo; N; 0.030% C Duplex Stainless Steel Grade 5A |
ASTM A995 Grade CE3MN (A995-5A) |
|
Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5%organics). Useful where the Pitting Resistance Number (PREN) is required. |
| ASTM A182 F55 |
25% Chrome; 7.5% Nickel; 3.5% Mo; N; 0.030%} C Duplex Stainless Steel Grade 6A |
ASTM A995 Grade CD3MWCuN (A995-6A) |
|
Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). Useful where the Pitting Resistance Number (PREN) is required. |
Material chemical composition:
| UNS S31803/A182 F51/1.4462 |
| C |
Cr |
Mn |
Mo |
N |
Ni |
P |
S |
Si |
| 0.030 |
21.0- |
2.00 |
2.50- |
0.08- |
4.50- |
0.030 |
0.020 |
1.00 |
| max |
23.0 |
max |
3.50 |
0.20 |
6.50 |
max |
max |
max |
| UNS S32205 |
| C |
Cr |
Mn |
Mo |
N |
Ni |
P |
S |
Si |
| 0.030 |
22.0- |
2.00 |
3.00- |
0.14- |
4.50- |
0.030 |
0.020 |
1.00 |
| max |
23.0 |
max |
3.50 |
0.20 |
6.50 |
max |
max |
max |
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