With a mixed microstructure, in an annealed condition, the alloy consists of 40-50% ferrite, with austenite. The ASTM A815 UNS S31803 Fittings gets its corrosion resistance properties from the austenite portion, while its strength and hardness are inherited from the ferrite portion of its microstructure.
ASTM A815 UNS S31803 specification
| A815 S31803 buttweld fittings sizes | UNS S31803 fittings meet the requirements | ASTM A815 S31803 schedule chart |
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| American standard & specification | UNS S31803 fittings design standard | A815 UNS S31803 pipe fittings manufacturing technique |
Contact seamless & welded ASTM A815 UNS S31803 Fittings suppliers, they export UNS S31803 fittings material regularly in USA, Egypt, Saudi Arabia, South Africa & Oman |
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| Ends of SA 815 S31803 buttweld fittings | Meet standard | ASTM A815 WPS 31803 testing reqirements |
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Order custom size to verified ASTM A815 UNS S31803 Fittings suppliers in UAE, contact now via mail or live chat |
| ASTM A815 S31803 bend radius | A815 S31803 bend angle | |
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UNS S31803 duplex steel tee & reducer
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ASTM A815 UNS S31803 stub end & cap
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A815 UNS S31803 pipe fittings equivalent standard
| Material | UNS | Grade | Density (g/cm3) | WERKSTOFF NR. |
|---|---|---|---|---|
| 2205 | S31803 | F51 | 7.805 | 1.4462 |
UNS S31803 buttweld fittings chemical composition
| Chemical Element | % Present |
|---|---|
| Carbon (C) | 0.00 – 0.03 |
| Chromium (Cr) | 21.00 – 23.00 |
| Phosphorous(P) | 0.00 – 0.03 |
| Sulphur(S) | 0.00 – 0.02 |
| Nickel(Ni) | 4.50 – 6.50 |
| Nitrogen(N) | 0.08 – 0.20 |
| Molybdenum(Mo) | 2.50 – 3.50 |
| Silicon(Si) | Balance |
| Iron(Fe) | Balance |
| Manganese(Mn) | Balance |
ASTM A815 WP-S UNS S31803 mechanical properties
| Mechanical Property | Value |
|---|---|
| Hardness Brinell | 290 Max HB |
| Elongation A50 mm | 25 Min % |
| Proof Stress | 450 Min MPa |
| Tensile Strength | 620 Min MPa |
SA 815 S31803 physical properties
| Physical Property | Value |
|---|---|
| Density | 7.805 g/cm³ |
| Electrical Resistivity | 0.85 x10^-6 Ω .m |
| Modulus of Elasticity | 200 GPa |
| Thermal Expansion | 13.7 x10^-6 /K |
| Thermal Conductivity | 19.0 W/m.K |
Schedule 40 A815 UNS S31803 buttweld elbow weight chart
| Schedule 40 Elbow Weight in kg | ||
|---|---|---|
| DN | NPS | WEIGHT |
| 15 | 44958 | 0.08 |
| 20 | 45019 | 0.11 |
| 25 | 1 | 0.15 |
| 32 | 1.25 | 0.25 |
| 40 | 1.5 | 0.39 |
| 50 | 2 | 0.66 |
| 65 | 2.5 | 1.37 |
| 80 | 3 | 2.19 |
| 90 | 3.5 | 2.96 |
| 100 | 4 | 4.12 |
| 125 | 5 | 6.89 |
| 150 | 6 | 10.7 |
| 200 | 8 | 21.6 |
| 250 | 10 | 37 |
| 300 | 12 | 61 |
| 350 | 14 | 85.1 |
| 400 | 16 | 121 |
| 450 | 18 | 176 |
| 500 | 20 | 232 |
| 550 | 22 | / |
| 600 | 24 | 377 |
The cutting speed of Duplex Steel S31803 Pipe Fittings is about 20% lower than a conventional grade like 304. This is because its high strength makes it less machinable.
There are several types of elbows available based on the radius type and angle. The most common angles for elbow fittings are 45, 90 and 180 degrees. However, they can be customised, depending on the need of the application. The other types of elbows are – short and long radius, socket weld, threaded, buttweld and reducer elbow.
One of the best features that make the WNR 1.4462 Tee, better than austenitic alloys is its resistance to stress corrosion cracking. In the presence of chloride ions, the fittings exhibit resistance without becoming susceptible to either pitting or crevice corrosion. They work well in marine environments because they are extremely resilient to the presence of salt in seawater.
Work hardening this alloy using thermal processes is not possible. However, it can be annealed by solution treating between a temperature range of 1020 – 1100°C.
The nature of its dual microstructure makes it possible for the UNS S31803 Fittings to be used at temperatures as high as 300°C. Using it above this temperature range results in the formation of grain boundary precipitates.
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