Langley Alloys
Super Duplex 2507 (UNS 32750)
Super Duplex Alloy UNS S32750 (F53 / 1.4410 / Alloy 32750 / Alloy 2507) has excellent corrosion resistance to a wide variety of media, with outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C.
UNS S32750 (F53 / 1.4410 / Alloy 2507) exhibits a low coefficient of thermal expansion and higher heat conductivity than austenitic steels and is suitable for working temperatures up to 300°C.
Listed in NACE MR 01 75 for sour service UNS S32750 (F53 / 1.4401) and having gained ASME Approval for Pressure Vessel applications Alloy 32750 can be used in a wide variety of applications.
For European Sales of UNS S32750 (Alloy 2507)) contact our sister company Langley Alloys in the UK
| Super Duplex 2507 |
|---|
|
| Trade Name | Common Name | UNS | ASTM A276/ A479 | ASTM A182 | ASTM 240 | ASTM A789/A790 (ASME) | European |
|---|---|---|---|---|---|---|---|
| (ASME) | (ASME) | ||||||
| Grade | Grade | Bar | Forging | Plate | Pipe | Werkstoff | |
| Alloy 2507 | 2507 | S32750 | S32750 | F53 | S32750 | S32750 | 1.4410 |
| Grade | Chemistry (Typical Values) | Mechanicals | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specification | Cr | Ni | Mo | Cu | N | W | Si | Mn | P max |
S max |
C max |
Fe | UTS N/mm² (min) |
0.20% Proof (min) |
Elong % (min) |
Hardness HB (max) |
PREN |
| 2507 | 25.0 | 7.0 | 3.8 | 0.75 | 0.25 | 0.28 | 0.80 | 1.20 | 0.035 | 0.020 | 0.030 | Bal | 750 | 500-550 | 25 | 270 | 41 |
Super Duplex 2507 Sizes Available
| Bar Sizes | |
|---|---|
| Dia | lb/ft |
| 1/2" | 0.66 |
| 5/8" | 1.04 |
| 3/4" | 1.49 |
| 7/8" | 2.03 |
| 1" | 2.66 |
| 1 1/8" | 3.36 |
| 1 1/4" | 4.15 |
| 1 3/8" | 5.06 |
| 1 1/2" | 5.98 |
| 1 5/8" | 7.06 |
| 1 3/4" | 8.14 |
| 1 7/8" | 9.4 |
| 2" | 10.63 |
| 2 1/4" | 13.45 |
| 2 1/2" | 16.61 |
| 2 3/4" | 20.1 |
| 3" | 23.92 |
| 3 1/4" | 28.08 |
| 3 1/2" | 32.57 |
| 4" | 42.54 |
| 4 1/4" | 48.02 |
| 4 1/2" | 53.84 |
| 4 3/4" | 59.99 |
| 5" | 66.47 |
| 5 1/2" | 80.43 |
| 6" | 95.72 |
| 6 1/2" | 112.33 |
| 7" | 130.28 |
| 8" | 170.18 |
| 8 1/2" | 192.18 |
| 9" | 215.39 |
| 10" | 265.92 |
| 11" | 321.77 |
| 12" | 382.92 |
| 14" | 521.2 |
| Plate / Sheet Sizes | |
|---|---|
| Thickness | lb/ft² |
| 0.25” | 10.78 |
| 0.375” | 16.17 |
| 0.50” | 21.57 |
| 0.75” | 32.35 |
| 1.0” | 43.13 |
| 1.25” | 53.91 |
| 1.5” | 64.7 |
| 1.75” | 75.48 |
| 2.0” | 86.26 |
| Pipe Stock Sizes | ||
|---|---|---|
| Nominal | Sch. | lb/ft |
| Bore | ||
| 1/2" | 80 | 1.08 |
| 3/4" | 80 | 1.49 |
| 1" | ||
| 40 | 1.7 | |
| 80 | 2.21 | |
| 1 1/2" | 10 | 2.12 |
| 80 | 3.68 | |
| 2" | 10 | 2.68 |
| 40 | 3.71 | |
| 80 | 5.1 | |
| 3" | 10 | 4.4 |
| 80 | 10.42 | |
| 4" | 10 | 5.71 |
| 40 | 10.97 | |
| 80 | 15.25 | |
| 6" | 40 | 19.29 |
| Corrosion Testing |
|---|
| G48A Corrosion Test at 50°C (122°F) |
| Seawater corrosion test, demonstrates the absence of Sigma and otherdeleterious phases such as nitrides.Confirms practical pitting resistance rather than the theoretical PREN. |
| Common Test Results |
| No Pitting and weight loss <4g/m²(For 255 SD50 weight loss is <0.8g/m²) |
| Impact Testing | |
|---|---|
| Charpy ‘V’ notch | |
| Typically carried out at both roomtemperature and -46°C (-51°F) to ensure suitability for offshore applications and the absence of Sigma phase which can reduce toughness. | |
| Common Test Results | |
| Room Temp :250-350 J (185-260 ft.lb) -46°C (-51°F) :40-120 J (29-89 ft.lb) |
| Key Reasons to Choose Super Duplex |
|---|
| · High Strength · Excellent Corrosion Resistance · Suitable for sub-zero Service · Extended Lifecycle · 10% Lighter then 316 · Cost Saving over Nickel Alloys |
Super Duplex alloy UNS S32750 (F53 / 1.4410 / Alloy 32750 / Alloy 32750) has excellent corrosion resistance to a wide variety of media, with outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C.
UNS S32750 (F53 / 1.4410 / Alloy 32750) exhibits a low coefficient of thermal expansion and higher heat conductivity than austenitic steels and is suitable for working temperatures up to 300°C.
Listed in NACE MR 01 75 for sour service UNS S32750 (F53 / 1.4401) and having gained ASME Approval for Pressure Vessel applications Alloy 32750 can be used in a wide variety of applications.
Langley Alloys
Langley Alloys, (Langley Alloys), located in Vancouver, Washington, is a full service metals distributor specializing in duplex and super-duplex stainless steels as well as Austenitic XM-19 alloys...... Metals ideal for chemical, marine, pulp & paper, mining, phosphate fertilizer production and pollution control applications. Our sales staff has over 50 years experience in the metals industry. Let them put that expertise to work for you.
Langley Alloys carries a full line of products in super-duplex stainless steel Ferralium 255 (UNS S32550, S32520, F61), UNS S32750 (Alloy 2507, F53) & UNS S32760 (ZERON® 100, F55). Langley Alloys prides itself as a service oriented company that can meet the high demands of our customers. With our many years of experience and close relationships with vendors, we can provide finished products directly from engineering drawings.
Using advanced technology such as abrasive water jet and plasma cutting, slitting and CNC machining, Langley Alloys can save you money and time by providing cut-to-order products in many configurations. Langley Alloys - Portland is ISO 9001:2008 certified and provides full chemical and physical certification to ASTM, ASME, ANSI, AWS, NACE, NORSOK.