Grade S32760 & Grade S31803 Tube
UNS S31803 : Duplex : ASTM A789 (VO1.01) (F51) UNS S32760 : Super Duplex : ASTM A789 (VO1.01) (F55)
Trade Name Zeron 100 (5), Zeron 25 (5)
Chemical composition
UNS S31803
(PREN = % Cr + 3.3% Mo + 16% N)
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
N |
PREN |
| Min |
• |
• |
• |
• |
• |
21.00 |
4.5 |
2.50 |
0.08 |
33.00 |
| Max |
0.03 |
1.00 |
2.00 |
0.030 |
0.020 |
23.00 |
6.5 |
3.50 |
0.02 |
• |
UNS S32760
(PREN = % Cr + 3.3% Mo + 16% N)
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Cu |
N |
W |
PREN |
| Min |
• |
• |
• |
• |
• |
24.00 |
6.0 |
3.00 |
0.50 |
0.20 |
0.50 |
40.00 |
| Max |
0.03 |
1.00 |
1.00 |
0.030 |
0.010 |
26.00 |
8.0 |
4.00 |
1.00 |
0.30 |
1.00 |
• |
Mechanical properties
Condition: UNS S31803 Solution Annealed and Water Quenched
| U.T.S. |
90 KSI min |
(620 N/mm²) |
| 0.2% Proof Stress |
65 KSI min |
(450 N/mm²) |
| Elongation |
25% |
|
| Red of Area |
45% |
|
| CVN Impacts @ -40°C (-40°F) |
40 Joules |
(30ft-lbf) |
Condition: UNS S32760 Solution Annealed and Water Quenched
NACE MR0175 limits the supply hardness to 28 HRC max.
| U.T.S. |
109 KSI min |
(750 N/mm²) |
| 0.2% Proof Stress |
80 KSI min |
(550 N/mm²) |
| Elongation |
25% |
|
| Red of Area |
45% |
|
| CVN Impacts @ -40°C (-40°F) |
50 Joules |
(37ft-lbf) |
| Size range: 3.5”∅ - 8.5”∅ |
General scope
Both alloys combine the dual features of high strength and corrosion resistance obtained through the dual phase microstructure (50% austenite, 50% ferrite) associated with duplex stainless steels. UNS S32760 properties are slightly enhanced over S31803 by further additions of chromium (to 25%), and also tungsten and copper.
Thin sections (Tubulars) are capable of being cold worked to give yield strength of 105 KSI min.
Primarily manufactured in:
- Dubai, UAE
- Edmonton, Canada
- Houston, Texas
- Sheffield, England
- Singapore